#power  (physics) the rate of doing work; measured in watts (= joules/second)
  supertype:  physical_phenomenon  a natural phenomenon involving the physics of matter and energy
  subtype:  electrical_power__electric_power__wattage  the product of voltage and current
     subtype:  load.electrical_power  the power output of a generator or power plant
  subtype:  waterpower  the power to do work that is latent in a head of water

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