Many people - or at least some people - know that Niels Bohr was the first to develop a quantitative theory that energy levels of atoms - particularly the hydrogen atom - were quantized. In his theory, the electrons orbited the nucleus much like planets orbit the sun, but only at specific distances. The change in energy from from one "orbit" to another quantitatively predicted the hydrogen spectrum.
But did you know that beer - or rather a particular kind of beer - was vital to the advancement of atomic and nuclear theory, particularly at the Institute of Theoretical Physics at Copenhagen where Niels was director? No? Well, to learn a little more about the fruit of the barley's contribution to modern physics, click here.