Heat Pump
One of the most basic laws of thermodynamics, referred to as the second law, is that heat will spontaneously travel from a warm body to a cooler body, but not the reverse. Consequently, it i...
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The first electric welding transformer, a device which uses electricity to weld joints of metal using resistance heating. (Corbis Corporation)
Heat Pumps
A heat pump is a thermodynamic heating/...
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