3 ms·
> nothing is ever at rest in the known world. This is nonsensical, given that you can construct an inertial reference frame at rest with respect to any massive
by msla 9y ago
> nothing is ever at rest in the known world.
This is nonsensical, given that you can construct an inertial reference frame at rest with respect to any massive particle, and that reference frame is just as valid as any other inertial reference frame. That is one of the primary features of Relativity, so stating what you did implies you do not understand it very well.
- nyc111 9y agoYou say "inertial reference frame at rest with respect to any massive particle..." Is your particle moving with the reference frame? I believe so. How is it at rest then? Do you have motion when you are in a plane? Or do you say you are at rest because the passenger next to you is moving with you?
- cgmg 9y ago> Is your particle moving with the reference frame? I believe so. It is not moving with respect to the reference frame. > Do you have motion when you are in a plane? Or do you say you are at rest because the passenger next to you is moving with you? You are having a hard time understanding reference frames. You are at rest with respect to the plane. You are at rest with respect to the passenger beside you (assuming they're sitting still, relative to the plane). You are not at rest with respect to the ground below. The whole point of relativity is that no inertial frame is in an absolute state of "motion" or "rest". The laws of physics are the same in all inertial frames, whether it be your plane or the earth itself.