a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second
English physicist who established the mechanical theory of heat and discovered the first law of thermodynamics (1818-1889)
In the International System of Units, the derived unit of energy, work and heat; the work required to exert a force of one newton for a distance of one metre. Also equal to the energy of one watt of power for a duration of one second. Symbol: J