Tuesday, May 08, 2007

Daily tidbit for May 8

Page 2: absolute zero. When a gas is cooled its pressure drops by nearly equal values for each degree of drop in temperature. With an ideal gas the rate of drop in pressure would be uniform; the pressure would be zero at a specific temperature, called absolute zero Kelvin (after Lord Kelvin who devised a thermodynamic temperature scale). On the centigrade scale, absolute zero equals -273.2 degrees.