this post was submitted on 30 Oct 2024
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I don't understand. What's a uniform gravitational field and why does being inside one feels like standing in an accelerating elevator?
This is a joke about Einstein's form of the Equivalence Principle:
https://en.m.wikipedia.org/wiki/Equivalence_principle
Thanks. Let's see:
And
I'm just beginning to understand. I'm not there yet.
If you are standing in a closed box, there is no experiment you can make that tells you whether that box is standing on earth, or is on a rocket in space accelerating at 9.81m/s²
This has a bunch of interesting implications about the nature of spacetime