What are some simple experiments that help explain complicated phenomena? [more inside]
posted by Christ, what an asshole on Jul 6, 2009 - 15 answers

Does the curvature of space mean that the dimensions of height, breath and width are not independent of each other? [more inside]
posted by leibniz on Mar 2, 2009 - 45 answers

I'm on the hunt for sites and/or blogs about big ideas... Who wants to join me? [more inside]
posted by 0bvious on Jul 9, 2006 - 17 answers

What are some good writings on the relationship between what we think of as the physical world and the world of mathematical abstractions (the space in which, for example, all possible sequences exist) ? [more inside]
posted by teleskiving on Jun 19, 2005 - 16 answers