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	2022-12-14: How Can Matter Be BOTH Liquid AND Gas? 18:42: There are experiments currently being built to try to detect these, but they won’t be able to measure the direction the neutrinos come from. 02:37: It's almost like the map gives out - as though our explorer experimentalists haven’t traveled that far across the realms of pressure and temperature. 18:42: There are experiments currently being built to try to detect these, but they won’t be able to measure the direction the neutrinos come from.
	2022-11-23: How To See Black Holes By Catching Neutrinos 09:47: And collisions of magnetic-field-accelerated particles is exactly how we make neutrinos in our experiments. 12:13: In fact we already do so, for example with the ANITA balloon experiment. 12:18: These experiments can also be expanded. 09:47: And collisions of magnetic-field-accelerated particles is exactly how we make neutrinos in our experiments. 12:18: These experiments can also be expanded.
	2022-11-16: Are there Undiscovered Elements Beyond The Periodic Table? 11:31: When we combine our experimental data with our simulations we can make graphs like this one.
	2022-10-26: Why Did Quantum Entanglement Win the Nobel Prize in Physics? 00:21: ... Anton Zeilinger, who together are responsible for a series of ingenious experiments that proved that the strangest prediction of  quantum mechanics is ... 01:11: ... the past, but today I want to tell you all about the series of brilliant experiments celebrated by this year’s ... 01:22: Let’s start with a simple thought experiment. 02:49: Is there any real difference in the result of the experiment if the color of the balls is defined at the beginning  versus when the box is open? 06:05: Clauser talks about the time he proposed his idea for the experiment to Richard Feynman, who promptly kicked him out of his office. 06:23: They had figured out a brilliant  experiment and were going to try it. 07:33: ... inequality was convincingly violated in their experiments, which means quantum mechanics was working exactly as expected, implying ... 07:56: ... depends on how you make the measurement - in the case of this experiment, the orientation of the polarizers determined which polarizations the ... 08:16: But in Clauser’s experiment, the polarizers were fixed in position through the whole experiment. 10:10: ... which if you recall was the potential loophole in Clauser and Freedman’s experiment. ... 10:22: The Bell inequalities were also violated in Alain Aspect’s experiment, dealing another blow to hidden variable theories. 10:53: Aspect’s experiment seemed to eliminate that possibility by making that choice after the particles were produced. 12:09: ... and Aspect’s experiments ruled out local hidden variables, but that may mean they ruled out ... 18:07: Because that episode was a bit of an experiment. 10:22: The Bell inequalities were also violated in Alain Aspect’s experiment, dealing another blow to hidden variable theories. 09:01: But when you’re a brilliant experimentalist, “incredibly difficult” is your bread and butter. 00:21: ... Anton Zeilinger, who together are responsible for a series of ingenious experiments that proved that the strangest prediction of  quantum mechanics is ... 01:11: ... the past, but today I want to tell you all about the series of brilliant experiments celebrated by this year’s ... 07:33: ... inequality was convincingly violated in their experiments, which means quantum mechanics was working exactly as expected, implying ... 12:09: ... and Aspect’s experiments ruled out local hidden variables, but that may mean they ruled out ... 01:11: ... the past, but today I want to tell you all about the series of brilliant experiments celebrated by this year’s ... 12:09: ... and Aspect’s experiments ruled out local hidden variables, but that may mean they ruled out ...
	2022-10-19: The Equation That Explains (Nearly) Everything! 00:00: ... successful theory in the history of physics. It predicts the results of experiments with a numerical precision unmatched by any other branch of science, and ... 12:23: ... still an unsolved problem. Instead, we have to measure those masses with experiments and write them into this matrix by ... 00:00: ... successful theory in the history of physics. It predicts the results of experiments with a numerical precision unmatched by any other branch of science, and ... 12:23: ... still an unsolved problem. Instead, we have to measure those masses with experiments and write them into this matrix by ...
	2022-10-12: The REAL Possibility of Mapping Alien Planets! 20:21: ... speculates that the fine structure constant was set when the 4D experimentalists   coding our universe meant to type "1337" for the seed phrase and ...
	2022-09-21: Science of the James Webb Telescope Explained! 15:31: ... points out that we forgot to mention one of the important Higgs experiments - it’s not just ATLAS at the Large Hadron Collider that’s producing ...
	2022-09-14: Could the Higgs Boson Lead Us to Dark Matter? 02:50: ... would call this a direct detection experiment - because a dark matter particle is actually interacted with one of the ... 03:35: The second family of experiments, indirect detection, can be represented by rotating our Feynman diagram. 04:48: ... at the high-energy collisions of standard model particles in collider experiments like the ... 11:44: Physicists at the Large Hadron Collider’s ATLAS experiment have been adding up the outgoing transverse momenta for many, many events like this. 02:50: ... would call this a direct detection experiment - because a dark matter particle is actually interacted with one of the ... 03:35: The second family of experiments, indirect detection, can be represented by rotating our Feynman diagram. 04:48: ... at the high-energy collisions of standard model particles in collider experiments like the ... 03:35: The second family of experiments, indirect detection, can be represented by rotating our Feynman diagram.
	2022-08-24: What Makes The Strong Force Strong? 20:22: The challenge is placing any experimental constraints on that behavior.
	2022-08-03: What Happens Inside a Proton? 16:44: ... David asks whether this is a valid comparison to the entanglement experiment, done with a pair of   electrons with undefined but opposite ... 10:43: ... to get a probability. This is exactly like the famous double slit experiment,   where the probability of a particle landing  at a certain point on ... 16:44: ... Dunmore proposes a non-quantum  version of the EPR paradox experiment:   Take a pair of gloves, put them in separate sealed boxes and give ...
	2022-07-20: What If We Live in a Superdeterministic Universe? 01:41: ... fact his alive-and-dead feline thought experiment was a reductio ad absurdum designed to highlight the ridiculousness of ... 12:46: Now, this experiment used the polarization direction of photons rather than the spin direction of electrons, but it’s the same deal.
	2022-06-01: What If Physics IS NOT Describing Reality? 10:02: ... applied entropic uncertainty to analyze  Wheeler’s “delayed-choice” experiment. This   experiment causes a photon to behave like a wave  ...
	2022-04-20: Does the Universe Create Itself? 01:59: ... weirdness. We’ll start with the good ol’ Schrodinger’s cat thought experiment, devised by ardent realist Erwin Schrodinger to highlight the absurdity ... 05:27: ... but rather in the connection between the two. One of the thought experiments that led Wheeler to his view is his delayed-choice experiment, which is ... 07:08: ... was called the delayed choice experiment because, in principle, the second beamsplitter could be put in place ... 07:43: ... another experiment. If we measure the spin of one member of a pair of entangled particles - ... 01:59: ... weirdness. We’ll start with the good ol’ Schrodinger’s cat thought experiment, devised by ardent realist Erwin Schrodinger to highlight the absurdity of the ... 05:27: ... but rather in the connection between the two. One of the thought experiments that led Wheeler to his view is his delayed-choice experiment, which is ...
	2022-03-16: What If Charge is NOT Fundamental? 08:03: Starting with experiments at the Stanford Linear Accelerator Center in 1968, the reality of quarks quickly became conclusive. 06:59: And when the omega was  discovered by experimentalists,  Gell-Mann got his Nobel prize. 08:03: Starting with experiments at the Stanford Linear Accelerator Center in 1968, the reality of quarks quickly became conclusive.
	2022-02-16: Is The Wave Function The Building Block of Reality? 06:41: ... isolated quantum particle will undergo collapse during the course of an experiment. ... 10:48: ... to collapse. This time should be proportional to the size of the object. Experiments are approaching the masses necessary to make such direct measurements, ... 12:43: ... candidates for objective collapse models that have not been ruled out by experiments, so stand by for a jubilant confirmation or a sheepish “never ... 12:55: ... the case, it’s exciting that there are real and accessible experimental paths to investigating one of the biggest unanswered questions in ... 10:48: ... to collapse. This time should be proportional to the size of the object. Experiments are approaching the masses necessary to make such direct measurements, ... 12:43: ... candidates for objective collapse models that have not been ruled out by experiments, so stand by for a jubilant confirmation or a sheepish “never ...
	2022-01-19: How To Build The Universe in a Computer 02:50: Holmberg’s experiment was ingenious, but why go to all this effort?
	2022-01-12: How To Simulate The Universe With DFT 00:44: ... a box, or part of a hydrogen atom, or moving through a double slit experiment. ...
	2021-12-10: 2021 End of Year AMA! 00:02: ... this point um but they've also been playing around with trying to experiment with the alcubierre warp field okay so this is one of the earliest ...
	2021-11-10: What If Our Understanding of Gravity Is Wrong? 04:50: Two: it needs to be consistent with   the other known laws and theories  of physics that are experimentally verified. 13:32: ... our experiments haven’t  detected dark matter yet, there are still plenty of ... 04:50: Two: it needs to be consistent with   the other known laws and theories  of physics that are experimentally verified. 13:32: ... our experiments haven’t  detected dark matter yet, there are still plenty of ...
	2021-11-02: Is ACTION The Most Fundamental Property in Physics? 08:39: ... start with the famous double slit experiment, as we so often do when talking quantum mechanics. In it, a stream of ... 09:56: ... interference in most places - like the dark bands in the double slit experiment. It would lead to constructive interference only where this quantum ...
	2021-10-20: Will Constructor Theory REWRITE Physics? 08:50: The thought experiment goes as follows. 09:35: ... if we could design an experiment that showed that gravity could induce entanglement between separated ... 09:47: This is cool because it gives us an experimental test of quantum gravity that has absolutely no dependence on a particular theory of quantum gravity.
	2021-10-13: New Results in Quantum Tunneling vs. The Speed of Light 00:10: ... efforts in quantum tunneling - both theory and experiment - show that superluminal motion may be possible, while still managing to ... 01:12: ... and so today we’re going to look at a new theoretical result and a new experiment that are bringing us closer to understanding the superluminal prospects ... 08:06: The explanation boils down to a thought experiment. 10:09: All this theoretical stuff is good and fun, but what does experiment have to say? 10:35: For a real, physical experiment, we need a clock that’s physically measurable. 11:02: In this experiment, they fired ultracold rubidium atoms at a laser field that was spread out over a small area. 12:02: The point is that the theory and the experimental tools are now converging on a way to answer our questions once and for all. 00:10: ... efforts in quantum tunneling - both theory and experiment - show that superluminal motion may be possible, while still managing to ... 12:02: The point is that the theory and the experimental tools are now converging on a way to answer our questions once and for all.
	2021-10-05: Why Magnetic Monopoles SHOULD Exist 00:24: Let’s try an experiment. 01:21: ... magnet-slicing experiment was first performed by French scholar and Beauxbatons Academy Professor ... 13:06: That includes at the Large Hadron Collider, where a couple of different experiments have failed to spot monopoles created in the collider.
	2021-09-21: How Electron Spin Makes Matter Possible 04:43: ... as spinor particles like electrons, and in that case we can do another experiment. What happens if the ends exchange positions? If we’re careful again not ...
	2021-09-15: Neutron Stars: The Most Extreme Objects in the Universe 12:23: ... before. While these plasmas have been seen in   collider experiments on Earth, we’re not sure if they exist in neutron stars. The only ...
	2021-08-10: How to Communicate Across the Quantum Multiverse 13:40: ... This show is designed to get kids excited about science through fun experiments. If you check it out, remember to tell them, politely, that Space Time ...
	2021-07-21: How Magnetism Shapes The Universe 15:23: And Jack Williams leads us on a thought experiment that demonstrates a potential absurdity.
	2021-07-13: Where Are The Worlds In Many Worlds? 04:54: ... example of this behavior is in the double-slit experiment, where the position wavefunction of an electron passes through two gaps ... 07:31: We can see what this means a bit better if we track the experiment backwards. 09:11: ... that correspond to each of the branches of the wavefunction from the experiment. ... 09:48: OK, so you’ve observed the result of the experiment. 09:54: ... let’s say you record the results of the experiments by tallying spots on two sheets of paper - one to your left for ... 07:31: We can see what this means a bit better if we track the experiment backwards. 09:54: ... let’s say you record the results of the experiments by tallying spots on two sheets of paper - one to your left for ...
	2021-07-07: Electrons DO NOT Spin 00:47: ... it or not, this is basically the same experiment - suspend a cylinder of iron from a thread and switch on a vertical ... 02:25: ... experiment with the iron cylinder is called  the Einstein de-Haas effect, ... 04:40: ... But before we dive into that weirdness, let me give you one more  experiment that reveals the magnetic properties that result from ... 05:15: ... is the Stern-Gerlach experiment - proposed  by Otto Stern in 1921 and performed by Walther Gerlach ... 00:47: ... it or not, this is basically the same experiment - suspend a cylinder of iron from a thread and switch on a vertical ... 05:15: ... is the Stern-Gerlach experiment - proposed  by Otto Stern in 1921 and performed by Walther Gerlach a ... 00:47: ... it or not, this is basically the same experiment - suspend a cylinder of iron from a thread and switch on a vertical magnetic ...
	2021-06-23: How Quantum Entanglement Creates Entropy 07:14: ... or a simultaneously passing through two slits in the double-slit experiment. And we’ve   talked before about how these ... 10:23: ... weirdness like superposition.   That could be revealed in experiments like a Bell test, which we covered previously. But ... 07:14: ... having spin up and spin down as revealed in the Stern-Gerlach experiment,   or a simultaneously passing through two slits in the double-slit ... 10:23: ... weirdness like superposition.   That could be revealed in experiments like a Bell test, which we covered previously. But ... 07:14: ... experiment. And we’ve   talked before about how these experiments verify these overlapping split ...
	2021-06-16: Can Space Be Infinitely Divided? 02:38: ... say  “thought” because we’ve never been able   to conduct experiments at that tiny scale. So to understand why physicists believe this ... 04:49: ... went through, and we call this thought   experiment the Heisenberg microscope. We now know that the uncertainty ... 02:38: ... say  “thought” because we’ve never been able   to conduct experiments at that tiny scale. So to understand why physicists believe this ...
	2021-05-25: What If (Tiny) Black Holes Are Everywhere? 14:24: ... of other quantum optics applications like the various quantum eraser experiments. ...
	2021-05-19: Breaking The Heisenberg Uncertainty Principle 00:25: ... example, the recent g-2 experiment for measuring the muon’s interaction with quantum fields is good to to ...
	2021-05-11: How To Know If It's Aliens 00:24: ... successful Martian landing by the US. The landers performed multiple experiments to investigate the Martian soil for signs of living microbes. In one of ... 00:52: ... and today, the scientific consensus is that the labeled release experiment did in fact not detect ... 01:55: ... primitive life in our solar system. The Viking mission’s labeled release experiment sure looked like it had detected life. Except for one major difference. ... 00:24: ... successful Martian landing by the US. The landers performed multiple experiments to investigate the Martian soil for signs of living microbes. In one of ...
	2021-04-21: The NEW Warp Drive Possibilities 13:55: Okay, onto today’s comments we’re covering two episodes - there’s the quantum Zeno effect and the recent result from Fermilab’s muon g-2 experiment. 14:09: A few of you asked whether similar experiments could be performed using the tau particle. 15:10: People aren’t really working on this, but you can be sure that there’ll be even more focus on these experiments going forward. 15:49: ... the tevatron off and direct resources towards things like their neutrino experiments which we covered previously, and of course the muon g-2 - neither of ... 14:09: A few of you asked whether similar experiments could be performed using the tau particle. 15:10: People aren’t really working on this, but you can be sure that there’ll be even more focus on these experiments going forward. 15:49: ... the tevatron off and direct resources towards things like their neutrino experiments which we covered previously, and of course the muon g-2 - neither of ...
	2021-04-07: Why the Muon g-2 Results Are So Exciting! 00:00: - When a theory makes a prediction that disagrees with an experimental test. 00:20: Well Fermilab's Muon g-2 experiment has been chasing what might be the most promising glitch of all, and they've just announced their results. 01:23: And the scientists at Fermilab have just tugged it hard with the Muon g-2 experiment. 02:22: QED predicts the value for the electrons g-factor that matches experimental measurements to one part in a billion. 02:44: Starting in 20 years ago, experimental measurements of the Muon g-factor did not agree with the QED calculation. 06:42: So the g-2 in Fermilab's experiment name refers to that leftover bit. 07:58: ... of particle physics, we get a g-factor that's ever so slightly off the experimental ... 08:57: So, final we get to the Fermilab Muon g-2 experiment. 09:00: Prior to this experiment, various labs over the past 20 years have refined the Muon g-factor measurement. 09:32: ... Muon g-2 experiment at Fermilab, hopes to push closer to this level of confidence, and is ... 09:41: At the Fermilab experiment, physicists send muons flying at nearly the speed of light around a 50 foot diameter magnetic tube. 11:20: But the only way to be sure is to repeat the measurement with a new independent experiment. 09:41: At the Fermilab experiment, physicists send muons flying at nearly the speed of light around a 50 foot diameter magnetic tube. 00:00: - When a theory makes a prediction that disagrees with an experimental test. 02:22: QED predicts the value for the electrons g-factor that matches experimental measurements to one part in a billion. 02:44: Starting in 20 years ago, experimental measurements of the Muon g-factor did not agree with the QED calculation. 07:58: ... of particle physics, we get a g-factor that's ever so slightly off the experimental ... 02:22: QED predicts the value for the electrons g-factor that matches experimental measurements to one part in a billion. 02:44: Starting in 20 years ago, experimental measurements of the Muon g-factor did not agree with the QED calculation. 00:00: - When a theory makes a prediction that disagrees with an experimental test.
	2021-03-23: Zeno's Paradox & The Quantum Zeno Effect 01:38: I’m going to tell you about some very real experiments that claim to have demonstrated this phenomenon. 05:17: This has actually been tested for electron transitions in atoms - and I’ll tell you about the experiments in a minute. 05:37: ... by David Wineland and Wayne Itano claimed to have demonstrated it in an experiment by halting electron energy ... 12:17: ... quantum zeno experiments are difficult, and perhaps future brilliant tests will give us clues to ... 01:38: I’m going to tell you about some very real experiments that claim to have demonstrated this phenomenon. 05:17: This has actually been tested for electron transitions in atoms - and I’ll tell you about the experiments in a minute. 12:17: ... quantum zeno experiments are difficult, and perhaps future brilliant tests will give us clues to ...
	2021-03-16: The NEW Crisis in Cosmology 15:19: ... that the Huygen's Principle seems eerily similar to the double slit experiment if   there were an infinite number of slits. Well, ...
	2021-03-09: How Does Gravity Affect Light? 02:14: ... is Einstein’s great insight that there’s no experiment that can distinguish between the backwards pull due to being in an ...
	2021-02-24: Does Time Cause Gravity? 01:11: And we know that gravity DOES cause clocks to run slow based on many brilliant experiments. 10:46: The BICEP2 experiment claimed detection of these so-called “b-modes” but it turns out they were wrong. 01:11: And we know that gravity DOES cause clocks to run slow based on many brilliant experiments.
	2021-02-17: Gravitational Wave Background Discovered? 00:00: ... the phil's strength or direction doesn't change over the region of your experiment then there's no way that experiment can tell the difference between ...
	2021-02-10: How Does Gravity Warp the Flow of Time? 00:25: ... now know this as the equivalence principle - it states that there’s no experiment that you can do to distinguish a frame of reference in freefall within a ... 08:54: The equivalence principle demands that there’s no experiment that can distinguish between acceleration and gravity.
	2021-01-26: Is Dark Matter Made of Particles? 00:45: ... that overlaps our own, but so far is hidden from even our most ingenious experiments. ... 06:17: ... searches for new evidence out there in the universe or in our particle experiments here on Earth for evidence of particles that don’t fit the standard ... 07:09: There are some exceedingly clever experiments to do so - like we saw that time we visited FermiLab. 12:24: But to know one way or another one of the many brilliant experiments currently in progress or planned will need to bear fruit. 12:32: We’ll talk more about those experiments another time. 00:45: ... that overlaps our own, but so far is hidden from even our most ingenious experiments. ... 06:17: ... searches for new evidence out there in the universe or in our particle experiments here on Earth for evidence of particles that don’t fit the standard ... 07:09: There are some exceedingly clever experiments to do so - like we saw that time we visited FermiLab. 12:24: But to know one way or another one of the many brilliant experiments currently in progress or planned will need to bear fruit. 12:32: We’ll talk more about those experiments another time.
	2021-01-19: Can We Break the Universe? 01:42: ... - on the spaceship and on Earth - can compare the results of an experiment and get unresolvable ... 13:20: Regarding the experiment which showed that quantum jumps could be predicted, tracked, and even reversed in an artificial atom. 13:38: So the answer I think is that we don't yet know - but it's important to point out that the system used in the experiment IS a genuine quantum system. 14:08: This experiment should be taken as motivation to look deeper, rather than a final answer. 15:12: ... episode some researchers from the university of Tokyo reported on a new experiment that helped validate this ...
	2021-01-12: What Happens During a Quantum Jump? 05:49: As he put it, “we never experiment with just one electron or atom. 06:59: In the 1986 experiments, the electron in the trapped atom jumped between levels something like 100 million times per second. 08:56: ... ground state (or state 1 using the notation from the previous experiment) corresponded to zero quanta in either circuit, states 2 and 3 ... 09:19: But this also allowed the researchers to monitor the state of the system with far greater resolution than in the 1986 experiment. 08:56: ... ground state (or state 1 using the notation from the previous experiment) corresponded to zero quanta in either circuit, states 2 and 3 corresponded to 1 ... 12:02: But experimentalists are proving far cleverer than the naysayers imagined. 06:59: In the 1986 experiments, the electron in the trapped atom jumped between levels something like 100 million times per second.
	2020-12-22: Navigating with Quantum Entanglement 09:15: ... Experiments since Schulten’s proposal have shown that it’s possible to affect ... 09:49: ... behavior of the quantum world we need to perform incredibly careful experiments in highly controlled environments - ideally isolated systems of very few ... 09:15: ... Experiments since Schulten’s proposal have shown that it’s possible to affect ... 09:49: ... behavior of the quantum world we need to perform incredibly careful experiments in highly controlled environments - ideally isolated systems of very few ...
	2020-12-15: The Supernova At The End of Time 15:15: Chris Becke asks how the double slit experiment works if analyzed backwards. 15:25: ... Copenhagen interpretation, you CANNOT reverse time in the double slit experiment, because after the measurement of particle position is made, the state of ... 15:38: ... persists, so reversing time means reversing all outcomes of the experiment - all possible worlds, and watching them converge rather than ... 15:15: Chris Becke asks how the double slit experiment works if analyzed backwards.
	2020-11-11: Can Free Will be Saved in a Deterministic Universe? 09:09: And don't quote the famous Libet experiment at me.
	2020-11-04: Electroweak Theory and the Origin of the Fundamental Forces 03:33: ... only that, but experiments at the time indicated that, if they existed, these new ‘weak bosons’, W ... 05:13: But that phase should be totally unobservable by any experiment. 03:33: ... only that, but experiments at the time indicated that, if they existed, these new ‘weak bosons’, W ...
	2020-10-27: How The Penrose Singularity Theorem Predicts The End of Space Time 13:38: ... the wavefunction. That’s exactly what a quantum interference experiment is seeing - multiple   possible “realities” overlapping and ...
	2020-10-20: Is The Future Predetermined By Quantum Mechanics? 03:10: ... extremely precise and frequently replicated experiments, tell us that the universe really does exist in this indeterminate state ...
	2020-09-08: The Truth About Beauty in Physics 06:45: ... and parsimonious our theory, if it doesn’t match reality as measured by experimental data, then we’ve gone too ... 07:19: ... is more important to have beauty in one's equation than to have them fit experiment.” By which he meant that an experiment might give incorrect results, and ... 07:38: But if a physical law is mathematically ugly, then you can be sure it’s wrong, experiment or no. 09:42: ... were derived following the simplest thought experiments - he imagined falling off a roof, or a photon bouncing between mirrors - ... 15:22: The Belle II experiment that just started taking data on Japan's superKEKB electron-positron collider. 06:45: ... and parsimonious our theory, if it doesn’t match reality as measured by experimental data, then we’ve gone too ... 09:42: ... were derived following the simplest thought experiments - he imagined falling off a roof, or a photon bouncing between mirrors - ...
	2020-08-24: Can Future Colliders Break the Standard Model? 00:18: ... published their vision for the next several years of particle physics experiments in the ... 00:56: But do the FCC or other upcoming collider experiments really have a chance of succeeding? 01:55: ... those first collision experiments, all sorts of never-before-seen particles were observed allowing ... 10:41: Ever since Europe won the giant collider game with the LHC, particle physicists in the US have focused on smaller experiments. 10:58: ... has reinvented itself as leaders in, among other things, neutrino experiments - and when we visited FermiLab earlier this year we saw the linear ... 00:18: ... published their vision for the next several years of particle physics experiments in the ... 00:56: But do the FCC or other upcoming collider experiments really have a chance of succeeding? 01:55: ... those first collision experiments, all sorts of never-before-seen particles were observed allowing ... 10:41: Ever since Europe won the giant collider game with the LHC, particle physicists in the US have focused on smaller experiments. 10:58: ... has reinvented itself as leaders in, among other things, neutrino experiments - and when we visited FermiLab earlier this year we saw the linear ...
	2020-08-10: Theory of Everything Controversies: Livestream 00:00: ... it has failed multiple times eric can i just address that because in experimental physics it's not uncommon to have rather extreme budget overruns i ...
	2020-07-28: What is a Theory of Everything: Livestream 00:00: ... be to bring together today's frontline researchers uh in physics experimental and theoretical for a real conversation so brian is a distinguished ...
	2020-07-20: The Boundary Between Black Holes & Neutron Stars 12:18: ... horizon by adding rotation or charge to the black hole, and also about experiments at CERN to study the nature of ...
	2020-07-08: Does Antimatter Explain Why There's Something Rather Than Nothing? 03:13: ... The first to fall was parity, with Chien-Shiung Wu’s famous cobalt-60 experiment proving that a mirror image of our universe would be distinguishable ... 06:27: ... you don’t need anything like a whole gram of the stuff to do CPT experiments. A handful of atoms is enough, and so the cost of doing these experiments ... 07:21: ... the ALPHA experiment is testing the behavior of anti-hydrogen in multiple ways to see if it ... 08:00: ... around the ring. They can then be redirected to a number of different experiments, including ALPHA. There, the negatively-charged anti-protons are trapped ... 08:39: ... previous experiments, the now-neutral anti-hydrogen was no longer confined by the Penning ... 10:56: ... scientists are also building a new experiment: similar to the original ALPHA apparatus, but rotated by 90 degrees, ... 11:51: ... at all. Maybe it’ll come from CPT violations measurable only in future experiments. Or maybe it won’t—instead proving beyond a doubt that CPT truly is an ... 03:13: ... The first to fall was parity, with Chien-Shiung Wu’s famous cobalt-60 experiment proving that a mirror image of our universe would be distinguishable from our ... 06:27: ... you don’t need anything like a whole gram of the stuff to do CPT experiments. A handful of atoms is enough, and so the cost of doing these experiments ... 08:00: ... around the ring. They can then be redirected to a number of different experiments, including ALPHA. There, the negatively-charged anti-protons are trapped ... 08:39: ... previous experiments, the now-neutral anti-hydrogen was no longer confined by the Penning ... 11:51: ... at all. Maybe it’ll come from CPT violations measurable only in future experiments. Or maybe it won’t—instead proving beyond a doubt that CPT truly is an ... 08:00: ... around the ring. They can then be redirected to a number of different experiments, including ALPHA. There, the negatively-charged anti-protons are trapped by a ...
	2020-06-22: Building Black Holes in a Lab 01:54: ... analog black holes, but the first analogy started with a pure thought experiment. ... 04:08: ... instructive efforts use the same medium as Bill Unruh’s original thought experiment - black holes made of ... 05:01: ... direction to the waves this is actually an analog white hole. Other experiments use a carefully-shaped hole in a tank to create a classic vortex - in ... 07:41: ... but some of that physics is now on much more solid footing based on experiments with a tank of ... 09:19: ... typically microscopic can become macroscopic. Jeff Steinhauer has done experiments with super-cold rubidium gas in a BEC state. Using a laser, it’s ... 10:13: ... of the evaporating particles from a BEC provides the strongest direct experimental evidence for Hawking radiation of a black ... 11:04: ... gravity. Proponents of this line of thought have triumphantly pointed to experimental observations of analog Hawking radiation—in laser pulses, fluids, and ... 11:55: ... acknowledge the experimental evidence of analog Hawking radiation in these other systems means ... 12:23: ... real black holes in the lab, the black hole analog is the best physical experiment we can ... 04:08: ... instructive efforts use the same medium as Bill Unruh’s original thought experiment - black holes made of ... 10:13: ... of the evaporating particles from a BEC provides the strongest direct experimental evidence for Hawking radiation of a black ... 11:04: ... gravity. Proponents of this line of thought have triumphantly pointed to experimental observations of analog Hawking radiation—in laser pulses, fluids, and ... 11:55: ... acknowledge the experimental evidence of analog Hawking radiation in these other systems means ... 10:13: ... of the evaporating particles from a BEC provides the strongest direct experimental evidence for Hawking radiation of a black ... 11:55: ... acknowledge the experimental evidence of analog Hawking radiation in these other systems means something, and ... 11:04: ... gravity. Proponents of this line of thought have triumphantly pointed to experimental observations of analog Hawking radiation—in laser pulses, fluids, and BECs—as ... 12:34: ... continue to theorize, but now we have a new daring breed of black hole experimentalist - and the secrets they pull from the bathtub vortex may give us the next ... 05:01: ... direction to the waves this is actually an analog white hole. Other experiments use a carefully-shaped hole in a tank to create a classic vortex - in ... 07:41: ... but some of that physics is now on much more solid footing based on experiments with a tank of ... 09:19: ... typically microscopic can become macroscopic. Jeff Steinhauer has done experiments with super-cold rubidium gas in a BEC state. Using a laser, it’s ...
	2020-06-08: Can Viruses Travel Between Planets? 09:43: ... bacteriophages have also shown resistance to UV exposure in experiments on the international space station, however their viability after that ... 13:42: ... on the smallest scales, and we saw how the 120 year old Cavendish experiment might reveal those ... 15:01: ... interesting insight - I said that when the masses of the Cavendish experiment are very close together, you need to factor in the Casimir force between ... 15:37: ... it’s because you would then expect experiments to measure a Casimir force that has a simple dependency on the mass of ... 16:20: The experimental physicist wile-e-coyote demonstrated this on multiple occasions. 09:43: ... bacteriophages have also shown resistance to UV exposure in experiments on the international space station, however their viability after that ... 15:37: ... it’s because you would then expect experiments to measure a Casimir force that has a simple dependency on the mass of ...
	2020-05-27: Does Gravity Require Extra Dimensions? 00:08: The fundamental nature of gravity still eludes our best minds - but those secrets may be revealed by turning back to the Cavendish experiment. 04:42: But there’s a caveat - that experiment only ruled out extra large dimensions. 07:36: It’s actually the OG - the experiment first used to measure the strength of the force of gravity - or the G in Newton’s law of gravitation. 07:45: It’s the Cavendish experiment, performed by Brit Henry Cavendish in the late 18th century. 07:52: ... apparatus for the experiment was actually designed and built by another British scientist John ... 08:02: But Mitchell died before he could conduct the experiment, and so Cavendish inherited and improved the device, and actually made the measurement. 08:10: The Cavendish experiment looked like this: a 6-ft rod suspended from its center by a long, thin, metal wire. 10:01: Modern Cavendish experiments look quite a bit different than Mitchell and Cavendish’s first apparatus. 10:08: The experiment is now typically done in a vacuum, with precise temperature control and electrostatic and magnetic shielding. 11:45: Well, to build better Cavendish-style experiments. 08:10: The Cavendish experiment looked like this: a 6-ft rod suspended from its center by a long, thin, metal wire. 07:45: It’s the Cavendish experiment, performed by Brit Henry Cavendish in the late 18th century. 10:01: Modern Cavendish experiments look quite a bit different than Mitchell and Cavendish’s first apparatus. 11:45: Well, to build better Cavendish-style experiments.
	2020-05-18: Mapping the Multiverse 14:05: ... time we talked about the greatest failed experiment in the history of physics - the Michelson-Morley experiment, and how it ... 15:08: ... asks whether the Michelson Morley experiment has been performed at much higher velocities to get a better reading - ... 15:40: ... the experiment has been performed with much higher precision using other methods - ...
	2020-05-11: How Luminiferous Aether Led to Relativity 00:00: ... The great edifice of physical theory seemed complete. A few minor experiments remained to verify everything. But little did those physicists know that ... 01:09: ... experimental design was so ingenious it couldn’t possibly fail. And yet it did fail - ... 05:08: ... of the 19th century when Thomas Young performed his famous double slit experiment. He showed that light produces an interference pattern passing between a ... 08:34: ... brought back together again. And just like in Thomas Young’s double-slit experiment, these beams would then interfere with each other to produce the bright ... 10:02: ... pattern should shift to reflect this. That is the Michelson-Morley experiment. For extra genius points, they floated the whole setup in a tub of ... 11:42: ... of relativity, which was published 8 years after the Michelson-Morley experiment. Now Einstein’s starting motivation seems to have been the fact that the ... 01:09: ... experimental design was so ingenious it couldn’t possibly fail. And yet it did fail - ... 00:00: ... The great edifice of physical theory seemed complete. A few minor experiments remained to verify everything. But little did those physicists know that ...
	2020-04-28: Space Time Livestream: Ask Matt Anything 00:00: ... to drop cats you like you need to know the army or know the airforce experiments in 60s very important research very important research so yeah so I do ...
	2020-03-16: How Do Quantum States Manifest In The Classical World? 00:20: ... of large scales, things are either this or that. The famous thought experiment is Schrodinger’s cat - in which a cat is in an opaque box with a vial of ... 04:28: ... most famous entanglement experiment is the one that Einstein came up with to demonstrate an apparent ... 11:48: ... state can be a pointer state? Well to some extent the way you set up the experiment - whether you align your magnetic field vertically or horizontally. But ... 15:28: ... week we talked about a thought experiment to test the many worlds interpretation of quantum mechanics - quantum ... 15:47: Some of you would like clarification on how this experiment actually proves many worlds. 11:48: ... state can be a pointer state? Well to some extent the way you set up the experiment - whether you align your magnetic field vertically or horizontally. But ...
	2020-03-03: Does Quantum Immortality Save Schrödinger's Cat? 02:20: It’s based on the famous Schrodinger’s cat thought experiment. 03:54: After 300 microseconds the connection between poison and polonium is cut, and the experiment is over. 04:21: ... we run this experiment over and over, every 300 microseconds, we need to do it for nearly a ... 04:33: ... the point is they can’t repeat the experiment - at least according the the Copenhagen interpretation, which tells us ... 05:04: ... even after trying this experiment even once, there’ll be a branch of the wavefunction where the physicist ... 05:52: Even in the rare survival timeline, everyone else will probably assume the experimental apparatus broke. 05:59: This thought experiment is sometimes called quantum immortality. 12:03: ... Goswami points out that the different matter configurations between experimental aparatus and the brain of different observers means decoherence should ... 12:14: So why do different observers always agree on the result of the experiment? 12:33: In other words, not all observers agree on experimental outcomes - it's just you never meet the ones who don't agree with you. 12:55: ... doesn't determine which experimental outcome YOU will see - all it does is ensure that you won't see multiple ... 13:27: eddybox asks whether the eraser experiment RE-introduces coherence somehow...? 13:33: ... answer is essentially yes - in a typical quantum eraser experiment you use entangled photon or other particle pairs - one of the pairs goes ... 14:10: ... exact mechanism varies by quantum eraser experiment, but this is true even in the infamous delayed choice quantum eraser, ... 14:28: ... Oxon asks whether the double slit experiment is usually performed in a vacuum, and if not, why doesn’t interaction ... 14:38: Well these days double-slit experiments are usually done with single photons or other particles. 14:54: ... visible-light photons will travel the length of a typical double-slit experiment without actually scattering off air particles, and more minor ... 15:12: Remember the that first double-slit experiment was performed by Thomas Young in 1801 and there wasn't much in the way of vacuum technology. 04:33: ... the point is they can’t repeat the experiment - at least according the the Copenhagen interpretation, which tells us ... 13:27: eddybox asks whether the eraser experiment RE-introduces coherence somehow...? 05:52: Even in the rare survival timeline, everyone else will probably assume the experimental apparatus broke. 12:03: ... Goswami points out that the different matter configurations between experimental aparatus and the brain of different observers means decoherence should ... 12:33: In other words, not all observers agree on experimental outcomes - it's just you never meet the ones who don't agree with you. 12:55: ... doesn't determine which experimental outcome YOU will see - all it does is ensure that you won't see multiple ... 12:03: ... Goswami points out that the different matter configurations between experimental aparatus and the brain of different observers means decoherence should proceed ... 05:52: Even in the rare survival timeline, everyone else will probably assume the experimental apparatus broke. 12:55: ... doesn't determine which experimental outcome YOU will see - all it does is ensure that you won't see multiple ... 12:33: In other words, not all observers agree on experimental outcomes - it's just you never meet the ones who don't agree with you. 14:38: Well these days double-slit experiments are usually done with single photons or other particles.
	2020-02-24: How Decoherence Splits The Quantum Multiverse 03:33: The best way to illustrate quantum coherence is with the good ol’ double-slit experiment. 05:52: The key in this experiment is that all photons exit the slits with the same phase relationship. 06:33: That’s the case for two separate paths that reach the same point on the screen in the double slit experiment. 11:57: ... wavefunction - corresponding to a single location for the double-slit experiment. ... 12:59: ... order to do quantum experiments we need to isolate a slice of the global wavefunction and maintain its ...
	2020-02-18: Does Consciousness Influence Quantum Mechanics? 01:42: ... tells us that the very act of measurement or observation causes an experiment to settle on a particular result, and that it’s meaningless to talk ... 01:56: Let’s see where this kooky idea comes from - using the classic example is the double-slit experiment. 02:40: ... Copenhagen interpretation explains the result of this experiment by saying that the electron does NOT travel as a particle or as a ... 03:52: Let’s look at the process in the case of the double-slit experiment. 05:53: John von Neumann believed that wavefunction collapse must happen at the moment of conscious awareness of the result of an experiment. 06:21: In 1961, Wigner devised a thought experiment to argue for the role of consciousness. 06:27: The Wigner’s friend experiment goes something like this: suppose you don’t conduct the double-slit experiment - your friend does. 06:35: You know the experiment has been completed with a single photon reaching the detector, and your friend is aware of the result, but you are not. 06:44: ... in our von Neumann chain - before it the information about this quantum experiment reaches your conscious awareness, it has to pass through your friend’s ... 07:04: From your perspective, your friend’s entire brain exists in a quantum superposition of all possible results of the experiment. 07:12: Only after your friend tells you the result of the experiment does their brain-wavefunction collapse to a single experimental outcome. 07:26: They think you’re crazy - they tell you the wavefunction collapsed as soon as the physical experiment was completed. 11:13: This time you stand next to your friend and you perform the double slit experiment together. 11:46: ... the only coherent explanation for the consistency of experimental results between different observers seems to be that the result of the ... 06:27: The Wigner’s friend experiment goes something like this: suppose you don’t conduct the double-slit experiment - your friend does. 11:46: ... results between different observers seems to be that the result of the experiment - and reality - exists independently of individual ... 06:44: ... in our von Neumann chain - before it the information about this quantum experiment reaches your conscious awareness, it has to pass through your friend’s conscious ... 07:12: Only after your friend tells you the result of the experiment does their brain-wavefunction collapse to a single experimental outcome. 11:46: ... the only coherent explanation for the consistency of experimental results between different observers seems to be that the result of the ... 07:12: Only after your friend tells you the result of the experiment does their brain-wavefunction collapse to a single experimental outcome.
	2020-02-11: Are Axions Dark Matter? 03:02: ... predicted by a CP-violating QCD. This discrepancy between theory and experiment is known as the strong CP problem and is currently ... 08:23: ... this actually gives us an experiment. It should be possible to shine a light through a solid, opaque wall. It ... 08:45: At least in theory - so far several experiments have not confirmed axions this way, at least so far. 10:36: ... Experiments thus far have not given a reliable positive results, but it may be that ... 08:45: At least in theory - so far several experiments have not confirmed axions this way, at least so far. 10:36: ... Experiments thus far have not given a reliable positive results, but it may be that ...
	2020-02-03: Are there Infinite Versions of You? 01:15: ... may have heard the old thought experiment - if an infinite number of monkeys tap randomly on an infinite number of ... 11:20: Well actually, the experiment has been done - researchers at the University of Plymouth gave six Celebes crested macaques a computer for one month. 11:39: ... with fecal smears - and where the infinite monkey theorem has been experimentally ... 01:15: ... may have heard the old thought experiment - if an infinite number of monkeys tap randomly on an infinite number of ... 11:39: ... with fecal smears - and where the infinite monkey theorem has been experimentally ...
	2020-01-27: Hacking the Nature of Reality 01:30: ... matters are the observables - the measurable start and end points of an experiment. ... 03:33: But new experiments were revealing that they seemed to have some real size - as though they were made of yet-smaller particles. 03:40: ... were scattering experiments - particles were shot into atomic nuclei, and the internal structure was ... 03:50: ... experiments revealed that the forces binding these sub-nuclear particles together ... 04:10: ... if it was possible to understand a scattering experiment - like those used to probe the atomic nucleus - not by modeling all the ... 04:25: In this case the observables were the particles that entered and left the nucleus in a scattering experiment. 06:04: At the time, nuclear scattering experiments were producing a startling variety of different particles. 06:56: ... theory sought to avoid this, and instead tries to model a scattering experiment - to build an S-matrix - by applying some general consistency conditions ... 11:14: ... rather more profound that just predicting the results a scattering experiment. ... 11:58: ... another example of bootstrapping a scattering experiment without understanding the internal physics, Steven Hawking's derivation ... 04:10: ... if it was possible to understand a scattering experiment - like those used to probe the atomic nucleus - not by modeling all the ... 06:56: ... theory sought to avoid this, and instead tries to model a scattering experiment - to build an S-matrix - by applying some general consistency conditions ... 03:33: But new experiments were revealing that they seemed to have some real size - as though they were made of yet-smaller particles. 03:40: ... were scattering experiments - particles were shot into atomic nuclei, and the internal structure was ... 03:50: ... experiments revealed that the forces binding these sub-nuclear particles together ... 06:04: At the time, nuclear scattering experiments were producing a startling variety of different particles. 03:40: ... were scattering experiments - particles were shot into atomic nuclei, and the internal structure was ... 03:50: ... experiments revealed that the forces binding these sub-nuclear particles together must be so ...
	2020-01-20: Solving the Three Body Problem 14:57: ... change their identity at different rates. We do that by performing the experiment with a beam of neutrinos and then repeating it with a beam of ...
	2020-01-06: How To Detect a Neutrino 00:59: ... around neutrinos, ♪ ♪ and the big one - the future one - is the DUNE experiment. ... 01:08: ... (𝘴𝘱𝘢𝘤𝘦𝘺 𝘴𝘺𝘯𝘵𝘩 𝘯𝘰𝘵𝘦𝘴) ♪ (text) "Deep Underground Neutrino Experiment" Its core - and sort of the central most important thing that it's ... 06:34: ♪ ♪ ICARUS is much smaller than the upcoming DUNE experiment. 06:41: ... number of neutrinos ♪ ♪ that Fermilab will be able to send to the DUNE experiments. ... 09:06: ♪ ♪ DR. DON: And *that* is what the DUNE experiment seeks to detect. 06:41: ... number of neutrinos ♪ ♪ that Fermilab will be able to send to the DUNE experiments. ...
	2019-12-09: The Doomsday Argument 05:13: To start, let’s try a thought experiment. 10:56: For example, you could be one of countless simulations of yourself in some far-future experiment to recreate the past - an ancestor simulation.
	2019-12-02: Is The Universe Finite? 12:30: ... this course you can explore the experiments of quantum mechanics and use them to construct equations of motion, laws ...
	2019-11-04: Why We Might Be Alone in the Universe 13:37: ... Receiver asked about the experiment to test Loop Quantum Gravity So LQG predicts that light of different ...
	2019-10-15: Loop Quantum Gravity Explained 12:33: But what about experiments? 12:36: Surprisingly, some experiments have actually been proposed. 13:22: Both currently live deep in their respective theoretical rabbit-holes, not yet able to make experimental contact with the real universe. 12:33: But what about experiments? 12:36: Surprisingly, some experiments have actually been proposed.
	2019-10-07: Black Hole Harmonics 10:29: They do – at least within the uncertainties of the experiment.
	2019-09-03: Is Earth's Magnetic Field Reversing? 10:36: There are several of these liquid sodium experiments in operation.
	2019-07-15: The Quantum Internet 09:27: ... Experimentalists have of course come up with a number of ingenious solutions, ranging ...
	2019-05-09: Why Quantum Computing Requires Quantum Cryptography 06:26: In fact here’s an quantum experiment you can do at home.
	2019-04-24: No Dark Matter = Proof of Dark Matter? 00:03: ... is a type of matter then it must be an unknown type generations of experiments to find this particle have also failed to locate the exotic dark matter ...
	2019-03-06: The Impossibility of Perpetual Motion Machines 00:19: No working perpetual motion machine has ever been experiment verified. 04:30: This is actually a specific example of a Maxwell’s demon device, an entropy-reversing thought experiment that we’ve discussed before. 00:19: No working perpetual motion machine has ever been experiment verified.
	2019-01-30: Perpetual Motion From Negative Mass? 06:04: ... of GR is the equivalence principle, which states that there’s no experiment that can distinguish between the feeling of acceleration in empty space ...
	2019-01-16: Our Antimatter, Mirrored, Time-Reversed Universe 00:42: ... this sort of parity transformation as we saw in our recent episode the experiment that first proved this found that cobalt-60 nuclei decay by splitting an ... 03:02: ... CP is what we call a good symmetry then you shouldn't be able to do any experiment to tell whether you're in this universe or in a CP transformed universe ... 10:54: ... have been a true roller coaster ride for the symmetries of nature as experiments found broken symmetries one, by one the first parity then charge parity ... 03:02: ... but don't get too comfortable we haven't looked at what the experimentalists have to say about this you may recall from the parity episode that the ... 10:54: ... have been a true roller coaster ride for the symmetries of nature as experiments found broken symmetries one, by one the first parity then charge parity ...
	2018-12-20: Why String Theory is Wrong 04:26: Assuming the experimentally measured value for the electric charge, the corresponding electron mass should be around five kilograms?
	2018-12-12: Quantum Physics in a Mirror Universe 00:02: ... that the universe did conserve parity and it appeared to be the case in experiments at least for tests involving gravity electromagnetism and the strong ...
	2018-12-06: Did Life on Earth Come from Space? 00:37: ... the conditions of space travel is to send things to space the first experiment was way back in 1936 when fungal spores were sent on a stratospheric ...
	2018-11-14: Supersymmetric Particle Found? 04:11: Unfortunately, for particle physics experiments cosmic rays at these energies are extremely rare. 04:37: It's a cosmic ray experiment of a very special sort. 09:44: Hints of its existence have been found in the Fermilab particle accelerator experiments. 04:11: Unfortunately, for particle physics experiments cosmic rays at these energies are extremely rare. 09:44: Hints of its existence have been found in the Fermilab particle accelerator experiments. 04:11: Unfortunately, for particle physics experiments cosmic rays at these energies are extremely rare.
	2018-11-07: Why String Theory is Right 12:37: There's also no experimental evidence of the existence of these dimensions. 16:10: ... statement about the state of the universe without conducting an experiment. ... 12:37: There's also no experimental evidence of the existence of these dimensions.
	2018-10-25: Will We Ever Find Alien Life? 13:01: ... you can check out Particle Fever, which follows the first round of experiments at the Large Hadron Collider and the eventual identification of the ...
	2018-10-10: Computing a Universe Simulation 14:06: ... Eotvos experiment, Michelson-Morley, and the double-slit experiment were all intensely ...
	2018-09-12: How Much Information is in the Universe? 06:24: That's verified experimentally in the case of photons. 12:41: ... the Viking lander's labeled release experiment, which had an initial positive result for possible biotic activity, which ... 12:58: ... in that soil could have been harmed by the disturbance caused by the experiment, resulting in the second null ... 06:24: That's verified experimentally in the case of photons.
	2018-08-30: Is There Life on Mars? 06:07: They conducted four experiments looking for the biosignatures of past or present microbial life. 06:17: It was the so-called labeled release experiments. 06:41: And this experiment failed that test a week later. 06:07: They conducted four experiments looking for the biosignatures of past or present microbial life. 06:17: It was the so-called labeled release experiments.
	2018-08-23: How Will the Universe End? 16:57: And then we go on to experimentally verify those things.
	2018-08-15: Quantum Theory's Most Incredible Prediction 00:43: We know this because the predictions of quantum field theory stand up to experimental test time and time again. 01:53: ... we're going to talk about the theory and experiments behind one of these tests, measuring the G factor, or in simple English, ... 05:38: Experiments point to this but so does the Dirac equation. 07:13: But in fact, we can calculate its effect extremely precisely and test this through experiments, showing the underlying truth of quantum theory. 10:34: However, the ultimate arbiter of any physical theory is experiment. 11:38: This requires an independent experimental measurement. 12:16: The theory of quantum electrodynamics has been pushed to the experimental limit and come out unscathed. 00:43: We know this because the predictions of quantum field theory stand up to experimental test time and time again. 11:38: This requires an independent experimental measurement. 12:16: The theory of quantum electrodynamics has been pushed to the experimental limit and come out unscathed. 11:38: This requires an independent experimental measurement. 00:43: We know this because the predictions of quantum field theory stand up to experimental test time and time again. 01:53: ... we're going to talk about the theory and experiments behind one of these tests, measuring the G factor, or in simple English, ... 05:38: Experiments point to this but so does the Dirac equation. 07:13: But in fact, we can calculate its effect extremely precisely and test this through experiments, showing the underlying truth of quantum theory. 05:38: Experiments point to this but so does the Dirac equation. 07:13: But in fact, we can calculate its effect extremely precisely and test this through experiments, showing the underlying truth of quantum theory.
	2018-08-01: How Close To The Sun Can Humanity Get? 03:47: There's the field experiment, which is essentially, a magnetometer and voltage detector. 09:13: Last year, 35,000 responses helped us make decisions on what experiments to try and even, what shows to make. 09:51: ... In last week's episode, we talked about Maxwell's demon-- the thought experiment in which the particles in two halves of a box are sorted without using ... 10:27: ... some folk-- not to be named-- objected to the thought experiment of the great James Clerk Maxwell-- one of the founding fathers of ... 10:51: Also, a couple of people thought that the whole thought experiment was just stupid. 09:13: Last year, 35,000 responses helped us make decisions on what experiments to try and even, what shows to make.
	2018-07-25: Reversing Entropy with Maxwell's Demon 05:06: ... that entropy was a statistical phenomenon, he came up with a thought experiment to explore just how fundamental the second law of thermodynamics really ...
	2018-07-11: Quantum Invariance & The Origin of The Standard Model 11:53: Richard Brockman and badly drawn turtle point out the danger of combining multiple experiments to increase the significance of your results. 12:00: ... you have enough experiments to choose from, you can just select from those with the high ... 12:09: ... the case of the mini bird experiment, they combined their 4.8 sigma fermion result with the 3.6 sigma result ... 12:23: So there's some justification because there weren't any very similar experiments with lower significance. 12:29: ... integrate the constraints to sterile neutrinos derived from the ice cube experiment or from the cosmic microwave background ... 12:39: It's much harder to incorporate those because the experiments were so different. 11:53: Richard Brockman and badly drawn turtle point out the danger of combining multiple experiments to increase the significance of your results. 12:00: ... you have enough experiments to choose from, you can just select from those with the high ... 12:23: So there's some justification because there weren't any very similar experiments with lower significance. 12:39: It's much harder to incorporate those because the experiments were so different.
	2018-07-04: Will A New Neutrino Change The Standard Model? 01:22: ... nucleus in some huge volume of matter, an entire glacier in the IceCube experiment or a huge vat of oil in the experiment we're about to ... 01:52: ... Excess of Electron-like Events in the MiniBooNE Short Baseline Neutrino Experiment." Catchy ... 07:07: OK, let's get to the experiment. 07:09: MiniBooNE is an experiment at Fermilab in Illinois. 07:44: So the MiniBooNE experiment starts with muon neutrinos, and some of these transform into electron neutrinos by the time they hit the vat. 08:38: However, MiniBooNE then combined their results with that of an older experiment that has also detected a hint of this excess. 08:45: That was the Liquid Scintillator Neutrino Detector, LSND, experiment at Los Alamos, which in 2001 published a 3.8-sigma excess in electron neutrinos. 10:09: Hopefully it isn't some sort of experimental error, which it might be. 10:17: ... is missing in our understanding of physics, and glitches between experiment and theory are exactly how new physics gets ... 12:09: We also can't rewind the universe, so this is just a thought experiment. 01:52: ... Excess of Electron-like Events in the MiniBooNE Short Baseline Neutrino Experiment." Catchy ... 07:44: So the MiniBooNE experiment starts with muon neutrinos, and some of these transform into electron neutrinos by the time they hit the vat. 10:09: Hopefully it isn't some sort of experimental error, which it might be.
	2018-04-25: Black Hole Swarms 10:32: Or could even be used in a two-slit experiment? 10:52: And the two-slit experiment-- well, in principle, yes.
	2018-04-18: Using Stars to See Gravitational Waves 06:58: He came up with a thought experiment of a simple gravitational wave detector, a rod with two sliding beads. 07:21: ... thought experiment isn't practical, but it demonstrates that in the right circumstances ...
	2018-04-11: The Physics of Life (ft. It's Okay to be Smart & PBS Eons!) 13:31: I'm sure you can better support the [INAUDIBLE] of your Gedanken experiment by abseiling into that kugelblitz with a geiger counter.
	2018-03-28: The Andromeda-Milky Way Collision 09:40: ... EDGES experiment integrated for hundreds of days and added together the radio signal from ...
	2018-03-21: Scientists Have Detected the First Stars 03:26: Their edges experiment is part of the Murchison Radio-Astronomy Observatory in Western Australia.
	2018-02-14: What is Energy? 02:28: The brilliant experiments of James Prescott Joule and others extended the idea to include heat energy.
	2017-11-29: Citizen Science + Zero-Point Challenge Answer 08:54: ... the first successful Casimir experiment saw the force emerge when the plates were separated by around one ...
	2017-11-22: Suicide Space Robots 00:51: And in some cases, the very destruction of these probes is part of the scientific experiment. 00:56: Or in the case of the recent destruction of Cassini, to protect the solar system for future experiments. 06:34: Where some spacecraft are destroyed to protect future science, in other cases their destruction is the scientific experiment. 15:33: And if a fringe idea does turn out to be right, then experiment will bear that out, even if it takes a fight. 16:16: And if a fringe idea does turn out to be right, then experiment will bear that out, even if it takes a fight. 00:56: Or in the case of the recent destruction of Cassini, to protect the solar system for future experiments.
	2017-11-08: Zero-Point Energy Demystified 09:09: And is this a possible maximum virtual photon frequency, given the results of Casimir experiments?
	2017-10-25: The Missing Mass Mystery 09:27: Now it wasn't an easy experiment.
	2017-10-11: Absolute Cold 00:54: Many experimental physicists have spent their careers trying to cool things to absolute zero.
	2017-09-28: Are the Fundamental Constants Changing? 01:46: ... we're going to look at the experiments and the evidence, because there's a hint of evidence that at least one ... 08:50: These potential pitfalls are why it's so important for scientific experiments to be reproduced by multiple teams before results can be accepted. 09:00: For now, all of this remains a tantalizing possibility until more and better experiments are performed. 10:50: ... and better atomic clocks will also help scientists shave down those experimental errors little by ... 01:46: ... we're going to look at the experiments and the evidence, because there's a hint of evidence that at least one ... 08:50: These potential pitfalls are why it's so important for scientific experiments to be reproduced by multiple teams before results can be accepted. 09:00: For now, all of this remains a tantalizing possibility until more and better experiments are performed.
	2017-08-24: First Detection of Life 00:05: In 1990, an experiment conceived by Carl Sagan was performed using the Galileo spacecraft. 00:17: The experiment was successful, and abundant life was unequivocally confirmed. 00:25: Now, a quarter of a century later, we're on the verge of conducting that same experiment on a world orbiting another star. 01:09: The data and conclusions from these experiments were published in Nature in 1993. 01:14: ... life on other worlds decades before our technology would allow a similar experiment beyond our solar ... 06:44: ... of questionable scientific value on its own, however this experiment gives us a roadmap for what to look for in other star systems, decades ... 09:03: ... in space, will enable us for the first time to perform Sagan's 1990 experiment on an Earth-like alien ... 00:05: In 1990, an experiment conceived by Carl Sagan was performed using the Galileo spacecraft. 01:09: The data and conclusions from these experiments were published in Nature in 1993.
	2017-07-12: Solving the Impossible in Quantum Field Theory 10:19: In a sense, you capture the theoretical infinite terms within an experimental finite number.
	2017-07-07: Feynman's Infinite Quantum Paths 00:54: One of the most profound illustrations of this is the famous double-slit experiment. 01:10: ... the too long, didn't watch for the double-slit experiment is this-- a particle, say a photon or an electron, travels through a ... 01:46: There's a story about a quantum mechanics professor explaining the double-slit experiment to a class. 03:21: The double-slit experiment is a special case where we only think about two possible paths. 13:44: The Michelson-Morley experiment disproved that idea. 14:44: This so-called charge parity or CP violation has been seen in experiments, implying that the universe does treat antimatter differently to matter. 13:44: The Michelson-Morley experiment disproved that idea. 14:44: This so-called charge parity or CP violation has been seen in experiments, implying that the universe does treat antimatter differently to matter.
	2017-06-21: Anti-Matter and Quantum Relativity 01:21: ... such as the strange interference pattern in the famous double-slit experiment. ... 15:08: It explores the key concepts in quantum physics through a description of the most important quantum experiments ever made.
	2017-05-17: Martian Evolution 13:38: But with a clever experiment, it's doable. 14:04: It's not an easy experiment.
	2017-05-03: Are We Living in an Ancestor Simulation? ft. Neil deGrasse Tyson 07:57: The thought experiment is similar to that of the Boltzmann brain. 10:09: ... upon deciding that we are simulated, we acknowledge that there is no experiment that we can do to prove that we are ... 13:52: ... made the argument that the Boltzmann brain thought experiment fails because it assumes random particle motion, and that particle ...
	2017-04-26: Are You a Boltzmann Brain? 08:10: ... experiment I do may be the randomly assembled delusion of a Boltzmann brain that ...
	2017-04-19: The Oh My God Particle 00:51: ... Eye Observatory, a collection of oversized tin cans that was an early experiment by the University of Utah to spot the highest energy cosmic rays in the ...
	2017-03-29: How Time Becomes Space Inside a Black Hole 13:54: ... the experimental results are still exciting, because the system did develop their own ...
	2017-03-22: Superluminal Time Travel + Time Warp Challenge Answer 00:53: ... that last one is a thought experiment that demonstrates that if you communicate using tachyons, hypothetical ...
	2017-02-15: Telescopes of Tomorrow 12:31: QED asks, if he gave me a black hole, what would be my first experiments?
	2017-01-19: The Phantom Singularity 13:13: Joshua Hillerup asks why the EM drive hasn't been tested more given that it isn't such a complicated experiment. 13:23: It costs a lot to do proper, careful experimental research of any type.
	2017-01-11: The EM Drive: Fact or Fantasy? 04:50: That's vastly smaller than the thrust observed by Shawyer's experiments, but still much, much larger than for a photon thruster. 08:49: The most likely explanation is that more careful experimentation will eliminate the apparent thrust. 04:50: That's vastly smaller than the thrust observed by Shawyer's experiments, but still much, much larger than for a photon thruster.
	2016-12-21: Have They Seen Us? 00:42: ... beginning with the faint sporadic buzz of the first experiments with wireless transmission, the radio brightness of this small planet ... 02:05: ... would they have been alerted to our presence by Nikola Tesla's first experiments, broadcast footage of the Moon landing, the "Phantom Menace?" To answer ... 00:42: ... beginning with the faint sporadic buzz of the first experiments with wireless transmission, the radio brightness of this small planet ... 02:05: ... would they have been alerted to our presence by Nikola Tesla's first experiments, broadcast footage of the Moon landing, the "Phantom Menace?" To answer ...
	2016-12-08: What Happens at the Event Horizon? 18:47: ... know whether the reality that drives the strange results of quantum experiments is actually deterministic in the way that we understand ... 18:57: ... can at least go some way towards predicting the results of quantum experiments. ... 19:27: However, it's also shown itself to be vulnerable to experimentation even for questions that we previously thought untestable. 18:47: ... know whether the reality that drives the strange results of quantum experiments is actually deterministic in the way that we understand ... 18:57: ... can at least go some way towards predicting the results of quantum experiments. ...
	2016-11-30: Pilot Wave Theory and Quantum Realism 01:13: The weird results of quantum experiments seem to demand weird explanations of the nature of reality. 02:16: ... classical thinking in interpreting the strange results of early quantum experiments. ... 09:39: But quantum entanglement experiments show that this sort of "spooky" action at a distance is a very real phenomenon. 09:54: It's a tough idea to swallow, but experiments indicate that some type of non-locality is real, whether or not we accept pilot-waves. 01:13: The weird results of quantum experiments seem to demand weird explanations of the nature of reality. 02:16: ... classical thinking in interpreting the strange results of early quantum experiments. ... 09:39: But quantum entanglement experiments show that this sort of "spooky" action at a distance is a very real phenomenon. 09:54: It's a tough idea to swallow, but experiments indicate that some type of non-locality is real, whether or not we accept pilot-waves.
	2016-11-09: Did Dark Energy Just Disappear? 04:32: ... cosmological constant basically means this: if you repeated this experiment many, many times, about 0.27% of the time the uncertainties, so the ... 04:57: So on average, about 1 in 300 experiments gives you a false 3-sigma result. 05:03: But given that many thousands of different experiments are being run by professional scientists at any one time, false 3-sigma results do happen. 05:26: False positive 5-sigma results only happen once per 3.5 million experiments. 12:01: There were differences between the experiments, so what effect did these differences have? 14:24: Okay, on to Many Worlds. A few of you asked how the double slit experiment is actually performed. 14:35: Well, the cool thing about the double slit experiment is that it's really easy to do with light. 15:25: You'll see dark vertical lines. Those are fringes of destructive interference just like the double slit experiment. 04:32: ... cosmological constant basically means this: if you repeated this experiment many, many times, about 0.27% of the time the uncertainties, so the messiness ... 04:57: So on average, about 1 in 300 experiments gives you a false 3-sigma result. 05:03: But given that many thousands of different experiments are being run by professional scientists at any one time, false 3-sigma results do happen. 05:26: False positive 5-sigma results only happen once per 3.5 million experiments. 12:01: There were differences between the experiments, so what effect did these differences have?
	2016-10-26: The Many Worlds of the Quantum Multiverse 01:00: The best illustration of why we need to describe the quantum world this way is the famous double-slit experiment. 02:30: And he proposed his famous Schrodinger's cat thought experiment to highlight the absurdity. 03:55: ... they are coherent-- it's possible to get interference in the double-slit experiment and spookily correlated quantum entanglement ... 06:13: To outline the idea without killing so many cats, let's talk about what this means in the context of the double-slit experiment. 11:19: One thing I love about your show is all of the crazy awesome experiments you do. 11:30: You don't do a lot of experiments on your show. 11:33: We could do experiments. 11:37: I want to challenge you to prove that the Earth is round using an experiment. 11:19: One thing I love about your show is all of the crazy awesome experiments you do. 11:30: You don't do a lot of experiments on your show. 11:33: We could do experiments.
	2016-09-29: Life on Europa? 12:25: ... our behavior-- including our belief that we are free to choose to do one experiment rather than another-- absolutely predetermines, including the decision ...
	2016-09-21: Quantum Entanglement and the Great Bohr-Einstein Debate 04:35: But in 1964, Irish physicist John Stewart Bell proposed an experiment to resolve the debate. 07:27: But if an entanglement experiment violates the Bell inequalities, then local realism is also violated. 07:35: By the way, [INAUDIBLE] describes this experiment in much more detail in this video. 07:42: It's a tricky experiment because entangled quantum states are hard to produce, but even harder to sustain. 08:25: The experiment was even set up so that the influence had to travel between the photons at faster than the speed of light. 08:31: Since then, many experiments have verified this result over larger and larger distances. 09:15: The results of these entanglement experiments do seem to violate local realism. 09:57: But none of these entanglement experiments allow any real information to be transmitted between particles. 07:27: But if an entanglement experiment violates the Bell inequalities, then local realism is also violated. 08:31: Since then, many experiments have verified this result over larger and larger distances. 09:15: The results of these entanglement experiments do seem to violate local realism. 09:57: But none of these entanglement experiments allow any real information to be transmitted between particles.
	2016-09-07: Is There a Fifth Fundamental Force? + Quantum Eraser Answer 04:03: ... send any real data back in time using the delayed choice quantum eraser experiment, and so cheat on the ... 04:14: ... individual photon passing through to the interference screen of this experiment does seem to be influenced by a decision that is made regarding each of ... 04:41: That decision is made randomly by a beam splitter in the original experiment. 04:45: But it's conceivable that the experiment could be adjusted so that a person could make the decision. 07:05: The delayed choice in this experiment is whether or not to know the path of the original photon or whether to erase that knowledge.
	2016-08-24: Should We Build a Dyson Sphere? 12:21: ... the experiment is done, we can pick out off the screen all of the photons that had ...
	2016-08-17: Quantum Eraser Lottery Challenge 00:00: [MUSIC PLAYING] The quantum eraser experiment tantalizes us with the apparent instantaneous flow of information between entangled photon pairs. 01:08: When the researchers conducted this experiment, they didn't bother with detector B. There were really only two sets of possible outcomes. 01:38: They just land in a single pile as though they had traveled as particles through the entire experiment. 02:25: ... travel back in time, even if was only a tiny fraction of a second in the experiment that was ... 02:56: So my evil genius plan-- I'm going to build a version of this experiment that will let me send tomorrow's winning lottery numbers back to myself. 04:02: ... from the switch, which is located at the which way/eraser end of the experiment, to the screen, which could theoretically be very distant in both space ... 00:00: [MUSIC PLAYING] The quantum eraser experiment tantalizes us with the apparent instantaneous flow of information between entangled photon pairs.
	2016-08-10: How the Quantum Eraser Rewrites the Past 00:09: That's the unsettling implication of the delayed choice quantum eraser experiment. 00:20: We recently talked about the weird results of the single particle double slit experiment. 00:30: ... to talk about an additional, possibly even stranger, version of this experiment, whose results force us to reconsider the nature of causality ... 00:51: ... the single particle double slit experiment suggests that things may not exist as well-defined, even real particles, ... 02:12: But it's still pretty interesting to see what happens if we try to observe the wave function at different points in the double slit experiment. 02:19: The great mystery of the experiment is that very particle-like things appear to traverse both slits simultaneously, like you might expect of a wave. 02:44: Any experiment that determines unambiguously which slit the particle traverses destroys the interference pattern. 04:03: By the way, the double slit experiment where you try to determine which slit is traversed is called a "Which Way" experiment. 04:11: And if the test is done on the far side of the slits, it's called a "Delayed Choice" experiment. 04:32: ... experiment made use of a very special type of crystal that absorbs an incoming ... 05:41: And crazier, this experiment was set up so that photons reach A or B after their twins reach the screen. 08:44: That's a bit uncomfortable, because to explain experimental results, those physical properties need to act and change instantly at any distance. 08:57: Now the delayed choice quantum eraser double slit experiment doesn't tell us whether the wave function is physical or not. 09:43: Perhaps this thing we call observation is just entanglement between the observer and the experiment. 08:57: Now the delayed choice quantum eraser double slit experiment doesn't tell us whether the wave function is physical or not. 00:51: ... the single particle double slit experiment suggests that things may not exist as well-defined, even real particles, in that ... 08:44: That's a bit uncomfortable, because to explain experimental results, those physical properties need to act and change instantly at any distance.
	2016-08-03: Can We Survive the Destruction of the Earth? ft. Neal Stephenson 10:46: See you next time on "Space Time." Last week we talked about the spectacular weirdness of the single particle double-slit experiments. 11:50: ... wave function, or between entangled particle pairs, in order to satisfy experimental ... 10:46: See you next time on "Space Time." Last week we talked about the spectacular weirdness of the single particle double-slit experiments.
	2016-07-27: The Quantum Experiment that Broke Reality 00:06: One of the strangest experimental results ever observed has got to be that of the single particle double-slit experiment. 03:05: But here, we get to one of the craziest experimental results in all of physics. 03:45: By the way, Veritasium actually conducts this experiment in his excellent series on the double-slit experiment-- really worth a look. 08:09: ... suggests that a particle traversing the double-slit experiment exists only as a wave of possible locations that ultimately encompasses ... 09:25: ... the Copenhagen interpretation, that final choice of the experiment of the universe is fundamentally random within the constraints of the ... 08:09: ... suggests that a particle traversing the double-slit experiment exists only as a wave of possible locations that ultimately encompasses all ... 00:06: One of the strangest experimental results ever observed has got to be that of the single particle double-slit experiment. 03:05: But here, we get to one of the craziest experimental results in all of physics.
	2016-06-22: Planck's Constant and The Origin of Quantum Mechanics 04:30: ... with frequency produced by hot objects had been mapped in careful experiments the blacked out anything but the glow of ...
	2016-06-08: New Fundamental Particle Discovered?? + Challenge Winners! 02:34: ... have heard anything about it except that two completely separate experiments using separate detectors-- Atlas and CMS-- both saw the same ...
	2016-06-01: Is Quantum Tunneling Faster than Light? 07:45: A team of very clever physicists have successfully performed this experiment.
	2016-04-27: What Does Dark Energy Really Do? 04:18: OK, so here's the experiment-- watch stars explode across the cosmos.
	2016-02-24: Why the Big Bang Definitely Happened 01:15: ... language of physics, and they build on and are supported by many experiments, from astronomical observations to particle collider experiments to ... 01:28: Some of these experiments have verified certain parts of the theory beyond reasonable doubt, while other parts remain untested. 09:06: In science, when we say theory, we mean a description of reality that has stood up to many, many experiments. 01:15: ... language of physics, and they build on and are supported by many experiments, from astronomical observations to particle collider experiments to ... 01:28: Some of these experiments have verified certain parts of the theory beyond reasonable doubt, while other parts remain untested. 09:06: In science, when we say theory, we mean a description of reality that has stood up to many, many experiments.
	2016-01-20: The Photon Clock Challenge 00:32: This simplistic thought experiment applies to the real world.
	2016-01-13: When Time Breaks Down 03:02: We're going to use a very close cousin to the photon box to explore time-- a thought experiment of Einstein's that we'll call the photon clock. 08:02: Paramdeep Singh, and a few others, questioned the plausibility of massless walls in our photon box thought experiment. 08:13: However, the thought experiment still works if you say that the walls do have some mass.
	2016-01-06: The True Nature of Matter and Mass 01:33: A good place to start is with a thought experiment that we'll call a photon box.
	2015-11-25: 100 Years of Relativity + Challenge Winners! 00:36: ... and time, of matter and energy, emerged from the simplest of thought experiments, simple statements about reality and yet the mathematical description ...
	2015-10-28: Is The Alcubierre Warp Drive Possible? 06:10: Now, this sort of wild optimism has inspired NASA's Eagleworks Laboratory to try an experiment to create and detect a warp field. 07:58: psantochi asks if we have any comments on the BICEP 2 experiment.
	2015-10-22: Have Gravitational Waves Been Discovered?!? 04:04: Spotting these is a very difficult experiment. 05:07: This is the LIGO experiment, and it goes something like this-- shoot a laser beam.
	2015-10-07: The Speed of Light is NOT About Light 01:37: ... put it another way, all experiments should give the same results regardless of the velocity of your ... 01:52: Fast forward to the 1800s-- top hats, steam trains, and mad experiments to uncover the laws of electricity and magnetism. 06:20: Yet our experiments don't seem to care about that. 01:37: ... put it another way, all experiments should give the same results regardless of the velocity of your ... 01:52: Fast forward to the 1800s-- top hats, steam trains, and mad experiments to uncover the laws of electricity and magnetism. 06:20: Yet our experiments don't seem to care about that.
	2015-07-29: General Relativity & Curved Spacetime Explained! 05:15: The answer is, whoever agrees better with experiments. 05:18: And there's over a century of experiments to refer to. 05:21: ... haven't fully fleshed out all of general relativity yet, but there's one experimental fact that I can use to show you that space time must be curved, just ... 06:09: But if you actually do this experiment you find the photons arrive on the roof slightly more than five seconds apart. 05:21: ... haven't fully fleshed out all of general relativity yet, but there's one experimental fact that I can use to show you that space time must be curved, just ... 05:15: The answer is, whoever agrees better with experiments. 05:18: And there's over a century of experiments to refer to.
	2015-06-03: Is Gravity An Illusion? 09:19: It makes several predictions that Newton's theory of gravity does not, and so far, it has passed all its experimental tests.
	2015-05-13: 9 NASA Technologies Shaping YOUR Future 04:16: ... funded some university researchers to experiment with targeted high frequency vibrations that trick bones into thinking ... 04:36: Now, right now it's just in the prototype phase, being used for experimental physical therapy, but in 10 years, I'm going to be jacked. 02:02: Well, back in the '80s NASA experimented to see if micro algae could help.
	2015-04-22: Are Space and Time An Illusion? 01:37: Plenty of other resources, some of which we link to in the description, discuss these discrepancies and the experimental evidence for them.
	2015-04-08: Could You Fart Your Way to the Moon? 02:25: ... Hadfield revealed on Reddit that he had performed his own poot-pulsion experiments on the ISS with no noticeable ...
	2015-03-18: Can A Starfox Barrel Roll Work In Space? 07:27: Or if I allowed in any speculative physics, like the big rip, there had to be at least some experimental observational evidence behind it. 07:53: I guess technically not impossible, but they also have no experimental basis, so now you know why I didn't include them. 07:27: Or if I allowed in any speculative physics, like the big rip, there had to be at least some experimental observational evidence behind it. 07:53: I guess technically not impossible, but they also have no experimental basis, so now you know why I didn't include them. 07:27: Or if I allowed in any speculative physics, like the big rip, there had to be at least some experimental observational evidence behind it.
	2015-03-11: What Will Destroy Planet Earth? 06:15: ... if Planck's best-fit numbers do stand up to further experiments, I mean, having your atoms disassembled by space itself would be a pretty ...
	2015-02-11: What Planet Is Super Mario World? 01:59: Now I did a crude version of this experiment with "Super Mario World" on a Super Nintendo Entertainment System circa 1991. 05:38: Remember, you could try this experiment yourself, even with rough measurements like mine.

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