News tagged with stones

Reinventing the wheel -- naturally

Humans did not invent the wheel. Nature did. While the evolution from the Neolithic solid stone wheel with a single hole for an axle to the sleek wheels of today's racing bikes can be seen as the result of ...

Jun 14, 2010 3.6 / 5 (8) 2 | with audio podcast

On the edge of friction

(PhysOrg.com) -- The problem exists on both a large and a small scale, and it even bothered the ancient Egyptians. However, although physicists have long had a good understanding of friction in things like ...

Dec 20, 2011 4.7 / 5 (6) 3 | with audio podcast