I can't help myself. I have to say something about this awesome water slide as seen on io9. You really should check out the io9 article - an interesting read. But for me, let me see if I can estimate ...

What is a fake force? Let me illustrate with an example. Suppose you want to use Newtonian mechanics. You know - where the net force is the rate a which the momentum changes with time? Or maybe you ...

Friction is an intrinsic physical phenomenon to curling. Without it, objects in motion would move endlessly, without slowing down. This would cause many safety-related problems: Cars or trains could ...