| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024joule /dʒul, dʒaʊl/USA pronunciation n. [countable]- Physicsa unit of work or energy, equal to the work done by a force of one newton when moved through a distance of one meter in the direction of the force.
WordReference Random House Unabridged Dictionary of American English © 2024joule ( jo̅o̅l, joul),USA pronunciation n. [Physics.]- Physicsthe SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force: equivalent to 107 ergs and one watt-second. Abbr.: J, j Also called newton-meter.
- named after J. P. Joule 1885–90
- Biographical James Prescott, 1818–89, English physicist.
Collins Concise English Dictionary © HarperCollins Publishers:: joule /dʒuːl/ n - the derived SI unit of work or energy; the work done when the point of application of a force of 1 newton is displaced through a distance of 1 metre in the direction of the force. 1 joule is equivalent to 1 watt-second, 107 ergs, 0.2390 calories, or 0.738 foot-pound
Symbol: J
Etymology: 19th Century: named after James Prescott Joule |