Why Julius Robert von Mayer was one of the unluckiest men in science

It's a truism of science that concepts and inventions are rarely attributed to the person who actually came up with them. Most concepts and inventions have several creators, from the Pythagorean theorem to the radio. But one particular concept β€” the first law of thermodynamics β€” has two creators who came up with it… » 2/22/13 8:00am 2/22/13 8:00am