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Cosmology / Physics question: Explain the "Horizon Problem" to me, in regards to measurements of Cosmic Mircowave Background Radiation - why would physicists regard different temperatures in differnet directions as their null hypothesis? [more inside]
posted by Jimbob on Jul 4, 2010 - 7 answers

In a modern CPU, how many individual electrons, approximately, are "let through" in each clock-cycle of, say, an individual transistor or logic gate? [more inside]
posted by Jimbob on Jan 8, 2008 - 7 answers

A few years ago I came across some cool OpenGL 3D physics demo programs. Basically, they gave you a surface with various objects on it, and you could click and drag the objects around, and watch them bounce into other objects - knock down bowling pins, roll along the floor, all that stuff. I want to find them again, or possibly something much cooler or newer - any ideas? [more inside]
posted by Jimbob on Dec 26, 2007 - 5 answers