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қара дене

An ideal or imaginary body that is absolutely black when cold, but is a perfect absorber of radiation and at the same time a perfect radiator. Black body temperatures are used to work out the theoretical laws of radiation and to calculate the temperature of the sun.

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  • 词性: 名词
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  • 行业/领域: 天文学
  • 类别 火星
  • Company: NASA
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