所有物体,只要不是绝对零度(-273℃),即存 在内部能量(Internal energy),并辐射出电磁波, 简称辐射能。物体本身的辐射能力即所谓放射率 (Emissivity),其辐射能量是其温度和放射率的函 数。
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在我们的星系中,超过10亿颗恒星已经耗尽了它们的内部能量来源,因此无法再产生恒星所需的热量来对抗向内的引力。
Upwards of a billion stars in our galaxy have burnt up their internal energy sources, and so can no longer produce the heat a star needs to oppose the inward force of gravity.
公司是否有合适的内部能量?
Or would they doubt that the company had the right internal capacity?
热带暖水池随时间变化的内部能量收支。
Time-dependent internal energy budgets of the tropical warm water pools.
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