PeterDonis's latest activity

In an inertial frame centered on the Earth, in general, its trajectory will be an ellipse (assuming it never achieves escape velocity)...

It doesn't. See post #14.

Meaning, with the same velocity as the satellite? Then, as has already been said, it will have the same orbit as the satellite. Which...

"Study" is a very broad term. Would you be able to pass a graduate level exam in relativity? For example, go to any of a number of...

I think that is pretty exhaustive: either get help or do it yourself. Those are the two basic options for most tasks

Then you need to branch out beyond your teachers. The other possible approach is to just learn relativity yourself. In the course of...

In all honesty, there is no point in trying to argue your case. As I showed in post 16 you have two mutually contradictory claims, so...

Tbh probably the most productive thing that could be done is to do as martin suggested earlier. Study the theory or theories and in the...

So this combination is really not possible. You cannot both have conflicting/contradicting assumptions and no contradiction with...

I'd say, move on. Study physics, special relativity in particular, but don't limit yourself to it. Later, when you have a reasonable...

In general, a mathematical framework has a large set of statements that are true in the framework. Usually, you can take some small...

There are multiple ways to arrive at SR, and not all of them directly put in the invariant speed of light as a postulate. So-called "one...

They're not part of any state. They're part of the mathematical description of the field--more precisely, they are properties of the...

They define "local" to allow for the possibility of "locally inaccessible information", which is what many people would just call...

Yes, that's correct. A question was asked about global causal structure and black holes. That's relevant to the QFT viewpoint on...