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2022-09-28: Why Is 1/137 One of the Greatest Unsolved Problems In Physics?

  • 01:58: Hydrogen atoms only emit light with these specific energies.
  • 04:17: And the orbital speed of an electron in the ground state of the Bohr model of the hydrogen atom is 137 slower than the speed of light.

2022-08-24: What Makes The Strong Force Strong?

  • 08:49: Let's say we have a proton and an electron, their electric charges attract and they form a neutral hydrogen atom.

2022-07-20: What If We Live in a Superdeterministic Universe?

  • 17:13: If the aliens simply describe the hydrogen atom and we saw that its electron had positive charge, we’d be set.

2022-06-22: Is Interstellar Travel Impossible?

  • 11:06: While the ship’s hull will stop heavier elements in less than a millimeter, the hydrogen atoms can penetrate an order of magnitude deeper.

2022-01-12: How To Simulate The Universe With DFT

  • 00:44: ... of an electron, whether it’s bouncing around inside a box, or part of a hydrogen atom, or moving through a double slit ...
  • 01:48: ... - that’s the V. V could result from the electromagnetic field inside the hydrogen atom, or the EM fields defining the walls of a box, ...
  • 02:10: ... an electron in a box or in a hydrogen atom, the different possible values of E that form solutions to this equation ...

2021-12-20: What Happens If A Black Hole Hits Earth?

  • 05:13: ... kg like a large asteroid. That gives it an event horizon the size of a hydrogen atom. At interstellar speeds it spends around a minute passing through the ...

2020-10-05: Venus May Have Life!

  • 05:41: So phosphine is a tetrahedtron - pyramid or d-4 - shaped molecule with one phosphorus and 3 hydrogen atoms.
  • 06:00: It can form anywhere that you might have free phosphorus and hydrogen atoms.

2019-06-06: The Alchemy of Neutron Star Collisions

  • 13:02: ... - well let's figure it out the density of the universe is roughly one hydrogen atom per square meter the universe is now around 1,100 times larger than it ...

2019-05-16: The Cosmic Dark Ages

  • 05:13: ... energy happened to exactly match an electron energy transition in the hydrogen atom was in danger of being absorbed. Two specific photons were in particular ...

2019-03-13: Will You Travel to Space?

  • 13:27: ... points out that atoms are perpetual motion machines, and there are hydrogen atoms that have been ticking for the entire age of the ...

2018-10-18: What are the Strings in String Theory?

  • 06:48: Niels Bohr came up with the first quantum model for electron orbits by thinking of them as ring-like standing waves around the hydrogen atom.

2018-10-10: Computing a Universe Simulation

  • 04:33: So there is something like 10 to the power of 80 hydrogen atoms in the universe.

2018-03-21: Scientists Have Detected the First Stars

  • 01:12: That light was the leftover heat glow from before those first hydrogen atoms formed.

2018-01-24: The End of the Habitable Zone

  • 06:44: ... the stratosphere will be broken into hydrogen and oxygen and the light hydrogen atoms will be lost to ...

2017-10-19: The Nature of Nothing

  • 07:10: ... the two electron orbitals that comprise the second energy level of the hydrogen atom. ...

2017-04-19: The Oh My God Particle

  • 05:06: Most of them are single protons, the nuclei of hydrogen atoms.

2017-01-11: The EM Drive: Fact or Fantasy?

  • 08:05: ... can reproduce certain quantum observables, like the energy levels of the hydrogen atom. ...

2016-03-09: Cosmic Microwave Background Challenge

  • 03:01: ... enough for those electrons to be captured by protons to form the first hydrogen atoms in an event called ...

2016-02-24: Why the Big Bang Definitely Happened

  • 03:51: ... which point the entire universe slipped from plasma to gas as the first hydrogen atoms ...

2015-05-20: The Real Meaning of E=mc²

  • 00:02: A hydrogen atom has less mass than the combined masses of the proton and the electron that make it up.
  • 05:21: ... at the top of the episode, I stated that the mass of a hydrogen atom is less than the combined masses of the electron and the proton that ...
  • 05:48: So the potential energy of the electron and proton in a hydrogen atom is negative.
  • 05:58: ... and therefore m equals E over c squared also comes out negative, and a hydrogen atom weighs less than the combined masses of its ...
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