At 22:41 05.12.96 -0500, Gregg wrote: >... Anyhow, the figure quoted was per degree Celcius, not Kelvin ... As "per degree" refers to a temperature difference, it is the same if you say "per degree Celsius" or "per degree Kelvin". Wolfram +-----------------------------------------------------+ | Wolfram Liebchen | | Forschungsinstitut fŸr Optik, TŸbingen, Deutschland | | mailto:liebchen@ffo.fgan.de | +-----------------------------------------------------+