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I flipping love mathematics, and the people who spend their time showing us the implications of maths.
Now I now what to expect next time I get out on my new, improved summer road bike!
Hmm. Can't seem to embed video. Sorry. Just go to the link.
If you're lucky the time dialation will mean that the forum's fixed when you get back
Ummmm....what are we actually looking at there?
But what would happen if you then switched your lights on?
If you go to the YouTube page, the model "world" is described. In short, a square grid below the view and a grid above emitting different types of light.
Interesting, thanks for posting. Still digesting so my "in short" description may be off.
So, what is it?
Wrong wrong wrong, this is what it looks like

That Science of Doctor Who looks interesting...