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Politics : Formerly About Advanced Micro Devices

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To: Doren who wrote (1438639)	2/11/2024 5:03:58 AM
From: maceng2	1 Recommendation Recommended By longz Read Replies (2) of 1572507

A vacuum flask does not transmit heat by air convection. True. Thus it keeps hot liquids hot and cold liquids cool for longer then a conventional vessel. They still radiate heat though. It's called thermal radiation. All bodies above absolute zero radiate heat, even "cold" ones. Hotter bodies radiate heat more that is all. The heat radiation law is proportional to the forth power of temperature. The constant of proportionality, ?, is called the Stefan–Boltzmann constant. It has a value s = 5.670374419...×10-8 W·m-2·K-4. Stefan–Boltzmann law - Wikipedia A clear sky will radiate heat from the ground (and the warm air just above it) into outer space faster then a cloud covered one. It's easily observed and demonstrated. If I missed some nature of Desert weather phenomena, I would be happy to hear it, but that itself does not detract from the nature of heat radiating from the ground and cloud cover.

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