Power is defined as energy E (or work W) emitted or expended over a time
For an energy flux S, the power passing through a surface S is given by the surface integral Eric Weisstein's World of Math
Power is measured in watts, where 1 W = 1 J s-1 = 1 kg m2 s-3, or horsepower.
Power can also be given in terms of an applied force F by
where v, and applied torque by
where is the angular velocity vector.
Energy, Horsepower, Power--Lens, Power--Refractive Surface, Watt
