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Watt and Joule and Horsepower

Published 14.11.2010 Presenter Anton Stepanov

Watt and Joule and Horsepower
As we know, physical quantities of Power and Work are interconnected and are measured in watts and joules. Let us recall the physical meaning of these quantities. What exactly one watt or joule equals to? 
Watt is a unit of power of the SI system. It was named after its inventor, James Watt ...