| 单词 | magnetron |
| 例句 | It involved an invention known as the cavity magnetron, a source of high-powered microwaves. Big Science 2015-07-07T00:00:00Z The British had sent Cockcroft to the United States to solicit engineering help to turn the magnetron into a serviceable radar apparatus. Big Science 2015-07-07T00:00:00Z The device combines two existing instruments in a vacuum chamber — an “orbitrap,” which harnesses positively charged ions in a small orbit around a negatively charged cathode, and a “magnetron,” which generates a stream of electrons. 2 Seattle startups racing to transform next-gen space travel 2022-06-26T04:00:00Z Dr. Ashkin worked at a Columbia University laboratory during World War II, developing a magnetron — a vacuum tube that generates microwaves — as part of an Army radar program. Arthur Ashkin, Nobel-winning physicist who trapped molecules with light, dies at 98 2020-09-28T04:00:00Z Ionized by sunlight, the barium would create a ring of moving plasma that emits radio waves: essentially a space version of a magnetron, the gadget used in microwave ovens. U.S. tests ways to sweep space clean of radiation after nuclear attack 2019-12-26T05:00:00Z Nearly 20 years earlier, during World War II, he designed a magnetron to jam enemy radar that, thanks to a melting candy bar, was adapted to create the microwave oven. Robert N. Hall, 96, whose inventions are everywhere, is dead 2018-05-11T04:00:00Z Subsequently, the magnetron and the modified cyclotron modes of the particle are cooled by sideband drives and direct resistive cooling, respectively. A parts-per-billion measurement of the antiproton magnetic moment : Nature : Nature Research 2017-10-17T04:00:00Z For months, British leaders plotted to use the magnetron as a bargaining chip for American secrets in other fields. How the search for a 'death ray' led to radar 2017-10-08T04:00:00Z A decade later, a new type of vacuum tube called the magnetron was created; it was then used in World War II radar systems and the invention of the microwave. G.E.’s History of Innovation 2017-06-12T04:00:00Z Dehmelt's experiments with a magnetron in 1959 showed that swarms of electrons could be trapped for many seconds and he confirmed the predicted electron dynamics. Hans Dehmelt (1922-2017) : Nature : Nature Research 2017-05-16T04:00:00Z So Percy Spencer, an engineer at Raytheon, was tasked with ramping up magnetron production. Hot food, fast: The home microwave oven turns 50 2017-03-19T04:00:00Z Thus, things turn full circle, for the original microwave oven was based on the magnetron from a military radar. Unorthodox links to the internet: Signalling dissent 2011-03-17T11:53:59Z To produce his wares, he mixes hydrogen and methane and turbocharges them with some energy produced from a microwave’s magnetron tube and a high-voltage power supply. Ping: At TechShops, Do-It-Yourselfers Get to Use Expensive Tools 2010-04-10T20:04:00Z During World War II, the American military couldn’t get enough magnetrons to satisfy their radar needs. Hot food, fast: The home microwave oven turns 50 2017-03-19T04:00:00Z But eventually, the researchers found that the magnetron trap was better suited to the electron work. Hans Dehmelt (1922-2017) : Nature : Nature Research 2017-05-16T04:00:00Z At the heart of radar technology is the “magnetron,” the device that produces the radio waves. Hot food, fast: The home microwave oven turns 50 2017-03-19T04:00:00Z |
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