I love maths / physics :)

[RegisterMe]

This is brilliant . Twenty minutes long, I've just watched it back to back.

https://www.youtube.com/watch?v=48sCx-wBs34

There's ads towards the end, but the rest of it is well worth your time.

[Tycow]

Thanks RM, added to my 'watch later' list.

If we're suggesting edumacational videos/channels, I fully recommend the Kurzgesagt – In a Nutshell channel. Their videos are brilliant at getting difficult concepts across, and are excellently animated.

[felter]

Watched it the other day there and it is pretty neat and well explained. I do think it could be used for some kind of flooring, maybe not as bright as the colours he uses though.