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Results tagged with thought-experiment
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user 165299
Hypothetical situation in which, for simplification, only some physical aspects are considered in order to further understand or reveal contradictions between the laws governing them.
2
votes
What's the relation of entropy with synchronisation?
Pendulum synchronization happens because of energy exchange between two oscillators. In a perfectly frictionless, isolated system this would not increase entropy at all, and the pendulums would keep o …
- 33.4k
0
votes
Accepted
How to prove that shadows in the cave aren't talking?
The physicist should want to demonstrate whether talk and shadows have a necessary relationship, or that they are independent.
If you can do experiments things are fairly easy. As RetroCausalElectro …
- 33.4k
2
votes
Density of infinite gas cloud
The answer is zero. Really.
The Schwarzschild radius of a mass $M$ black holes is $R=2GM/c^2$. So black holes have "density" (scare quotes because volume acts up a bit in curved spacetime, but we wil …
- 33.4k
15
votes
Photon thought experiment
The easiest way of seeing what happens is to draw a space-time diagram. The stationary box walls form two vertical parallel lines with a 45 degree zigzag path for the photon as it bounces between th …
- 33.4k