What if the speed of light is not constant.

[Gmetric]

Henk mentioned this yesterday and what with the recent news I do believe this to be a rather timely video.

[Lady Fraktor]

That was quite good. I imagine in another week there should be some amazingly ridiculous responses to all this on the interwebs.

[Ylem]

Interesting indeed, thanks for posting it.

[SkyHiker]

The first time I heard about that was from an Unzicker YouTube video. He mentioned VSL and referenced Einstein's 1912 article Is there a gravitational effect which is analogous to electrodynamic induction? where he makes c dependent on position (it might have an error). So, Dicke was not the first to consider it. Great video though.

There's also this paper claiming that VSL can be weakly equivalent to GR. I have not read the details but there a few papers working on proving equivalence in some sense.

[helicon]

Very interesting vid Arry. Thanks for sharing. e=mc(2) would need to be re-calculated as e would be variable depending on VSL. The end of the simple elegance.