Howcast - Learn how to do a powerslide to bigspin from competitive skateboarder Nate Cohen in this Howcast skateboarding video.

If you ask a physicist, what is at the core of physics, you will hear symmetry. What is symmetry? Gauge theory explained simply.



Symmetry is about actions that don't change anything. If we take an...

Howcast - Learn how to do a fakie ollie from competitive skateboarder Nate Cohen in this Howcast skateboarding video.

Quantum theory solved many problems with classical theory - the photoelectric effect solved by Einstein, atomic model solved by Niels Bohr. But quantum theory had a high price - determinism. it introduced...