WordReference Random House Unabridged Dictionary of American English © 2025
Joule's′ law′, [Physics.]
- Physicsthe principle that the rate of production of heat by a constant direct current is directly proportional to the resistance of the circuit and to the square of the current.
- Physicsthe principle that the internal energy of a given mass of an ideal gas is solely a function of its temperature.
- named after J. P. Joule 1850–55