Dale's latest activity

Please be aware that personal speculation is not permitted here. There is no part of either classical electrodynamics or quantum...

But the same applies here: - For mere kinematics, any "center of revolution" is as good as another. - For dynamics, there are choices...

So yes, you are talking about the case of two or more objects orbitting one another. In that case we do not have a rigid body and the...

I think that more important than a label of rotation vs revolution you should focus on rigid vs non-rigid motion. Rigid motion can be...

You can ask “which center of rotation makes my analysis easiest”.

The point is to show that any point can be chosen as the center, if desired. You have freedom to choose the center. You misunderstand...

Here a more recent and accurate answer by the same poster, already quoted in this thread: It's not about being relative in the sense...

We choose to decompose the motion into rotation around CM and translation of CM because it makes the math simpler. You can decompose the...

To support this see the plots I posted below

You can define it either way. Whatever is more convenient. "Center of rotation" is ambiguous, even if the frame of reference is given...

I think how I would phrase it is that Lorentz contraction does have an effect on the shadow length. If one were to compare a...

You need to be a little careful here, because how the shadow appears still depends on how you're looking at it. If you look directly...

For the general case, this is a very interesting question. But for simplicity, I will answer a much more limited case. Let's say that...

There is a difference between the 'box' and knowledge. It is in how one treats the knowledge. If it is assumed to be completely solid...

On PF, AI output is not considered to be a valid source, and this thread is an excellent example why. What you posted is an AI...