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For those of you who still have questions about the issues discussed in this thread, you should watch this (AI generated) video of...

Thanks. Your 2008 post on that subject is very useful in making these abstract concepts concrete. Cheers...

This is a much better question, and is getting close to the type of thing that you have to do in order to understand how important the...

When I look at Maxwell's equations, the EM side is immediately obvious. However, until now, the SR side was not. Are you seeing it in...

Well, you alluded to the fact that c could be differnent in what you wrote below (my emphasis). I did try to use a scenario involving a...

Okay, let's just stick with our universe. Are you saying that it is *hypothetically* inconceivable that the time it takes for a photon...

For anyone who thinks that I am gaslighting or giving a non-answer I encourage you to actually go through the work and do the relevant...

In his ether paper, Maxwell proposed to repeat Ole Roemer's measurement of the speed of light two times with an interval of 6 months...

I assumed the constituents of the two universes (stars, planets, photons, etc.) are the same. I'm not sure what's unclear here. Is...

Hmm, Maxwell didn't understand Maxwell's equations? That's rather surprising!

Okay, let me try again. Let's image two different universes each with just a star like our sun and a planet like Earth. And let's...

So, you think that Maxwell himself (who clearly was aware of Faraday's law and Maxwell's displacement [the curl of B equation]) thought...

Just curious, was this considered to be true prior to 1905? That is, was c then interpreted simply as the propagation speed of light...

Many constants in physics are known to exist, but their values must be determined experimentally. The constant c in the Lorentz...

By specific I mean a particular numerical value. Well, since the spacetime interval explicitly contains c (S^2 = c^2Δt^2 - Δx^2 - Δy^2...