| 单词 | joule |
| 释义 | joule (once / 622069 pages) n Use the scientific term joule for talking about work, energy, or heat. One joule is equal to the work it takes to make a watt of power for a second, or to move a body one meter with a one-Newton force. In physics, it's common to talk about joules of energy — one example used to illustrate a joule is lifting an apple, which weighs about one Newton. If you raise the apple one meter in the air, you've used one joule of work. The word joule comes from the English physicist James Prescott Joule, who studied the relationship between heat and mechanical work, research that led to the First Law of Thermodynamics. WORD FAMILYjoule: joules USAGE EXAMPLESIn a pure-oxygen environment, 16.7 million joules will be released for every kilogram of sugar used, releasing the explosive force of eight sticks of dynamite. Andy Weir, The Martian(2011) Crunching the numbers gives an energy of about 90 joules per second – or 90 watts, if you could harvest it at 100 per cent efficiency. Forbes(Jan 27, 2015) For every 10 joules of energy that our greenhouse gas pollution traps here on Earth, about 9 of them end up in an ocean. Scientific American(Dec 30, 2014) n 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 Syn|Hyper J, watt second energy unit, heat unit, work unit a unit of measurement for work Joule (once / 82653 pages) n WORD FAMILY Joule: Joules USAGE EXAMPLESA tip-off from Rob Joules of the North Devon National Trust alerted me to the Slow Adventure Co, and it was a revelation. The Guardian(Dec 24, 2016) They include emails that highlighted Mr. Podesta’s ties to an energy company, Joule Unlimited, that received Russian investments. Washington Times(Dec 18, 2016) To save this magical isle from the villainous Joules Volter, who wants to wrest all its energy from the realm’s benevolent guardian, Amperes Wattson. New York Times(Dec 01, 2016) n English physicist who established the mechanical theory of heat and discovered the first law of thermodynamics (1818-1889) Syn|Exp James Prescott Joule physicist a scientist trained in physics |
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