There was (or maybe still is) also the CHU: Centigrade heat unit, one of these half metric/half USC bastard units. A CHU was or still is the amount of heat needed to raise the temperature of one pound avoirdupois of water by one degree Celsius.
Han ----- Original Message ----- From: kilopascal To: U.S. Metric Association Sent: Wednesday, 2003-01-29 6:17 Subject: [USMA:24665] Re: POWER Not SI 2003-01-29 British thermal unit (Btu) a unit of heat energy defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. <snip>
