PeterDonis's latest activity

This is not correct and it is not an implication of the light cone (sphere). The light cone says that if there are rays in every...

And by the way, @Lynch101, this is an "A" level topic (and arguably might belong in the Beyond the Standard Models forum). It might be...

You need to actually look at some references and see if they describe the process in a way that matches one or the other of your claimed...

I only have time for a quick reply now, just focusing on some issues with your first bullet: .. in the ship's inertial frame (assuming...

Simultaneously in what frame? I assume you mean the rest frame of the bridge, but in any relativity scenario, you should always...

From the article, there is a lot of competition between the carriers to 'prove' that their network is better than the competitions'...

"Mate, your signal strength is always better than mine. What network are you with?"

The paper is silly, to put it mildly. The crux of their argument is that the set of axioms is arithmetically expressive and therefore...

It's not really a speculation by you personally, it's just restating what's already in the literature (for example, in the Wald excerpt...

Technically, yes, but the kind of departure is important. See below. No, there are two free parameters in the RN metric, ##M## and...

I'm not sure what "studies" you're referring to, but it's certainly true that there have been plenty of experiments testing both...

You may conclude that that statement, as you make it, is not even well-defined. You didn't specify a time in any frame at which B has...

The possible departure from uniqueness is pretty small: all we have, by your argument, is one additional free parameter in the solution...

This would amount to a different prediction for how much energy density a given amount of electric field produces; there would be an...

Not entirely ruled out mathematically. But, for example, any alternative possibility, if it's going to lead to a different solution...