In a message dated 4/18/00 1:14:50 PM Central Daylight Time, tesla@pupman.com writes: << 1 joule = 1 watt-second -------- joule is a unit of energy 1 watt = 1 joule/second -------- watt is a unit of power (energy/time) >> Huh? Energy is Force x distance in MKS units 1 Newton x 1 meter = 1 Joule Power is energy divided by time 1 Joule per second = 1 Watt Cheers, Ralphj Zekelman