positive pressure takes - Search PBS Space Time

03:05: ... energy density but also by pressure. Both mass energy density and any positive pressure act to decelerate the universe to cause it to recollapse. In fact for ...

08:10: That gives a positive pressure, and in general relativity positive pressure adds an attractive gravitational force, no matter what causes it.
12:59: ... negatives in what is probably not a negative mass, anti-gravitational, positive pressure, anti-deSitter space ...
08:10: That gives a positive pressure, and in general relativity positive pressure adds an attractive gravitational force, no matter what causes it.
12:59: ... negatives in what is probably not a negative mass, anti-gravitational, positive pressure, anti-deSitter space ...

04:36: ... is this how dark energy is causing expansion to accelerate, by causing positive pressure? ...
05:39: ... slowly, even if the overall energy density of those regions is the same Positive pressure pulls the universe ...
07:58: But we just discussed how positive pressure can't cause expansion to accelerate outwards.
08:28: Well, positive pressure pushes outwards, like in our pressurized tank.
08:47: But positive pressure pushes out.
09:19: Relativistically, negative pressure has to do the opposite of positive pressure and results in anti-gravity, because math.
10:12: A volume has negative pressure if it takes work to expand, just like a volume with positive pressure takes work to compress.
10:44: It's the opposite effect to positive pressure.
05:39: ... slowly, even if the overall energy density of those regions is the same Positive pressure pulls the universe ...
08:28: Well, positive pressure pushes outwards, like in our pressurized tank.
08:47: But positive pressure pushes out.
10:12: A volume has negative pressure if it takes work to expand, just like a volume with positive pressure takes work to compress.

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