单词 | liquid helium |
释义 | liquid helium Its mission has now ended, as it has exhausted the reserves of liquid helium required to maintain its instruments at a low enough temperature. Times, Sunday Times When they melted, the heat rapidly evaporated the liquid helium - in effect an explosion. Times, Sunday Times And nine days later a connection between two magnets short-circuited, heating the liquid helium used to supercool the magnets, and forcing it to escape as a gas very fast. Times, Sunday Times Body scanners used in hospitals would not be possible without superconductivity and liquid helium. Times, Sunday Times Additionally, the sensitive amplifiers used in radio telescopes are cooled using liquid helium to reduce thermal noise. Retrieved from Wikipedia CC BY-SA 3.0 |
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