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9 October, 12:20

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase?

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  1. 9 October, 13:00
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    Radiant heat transfer is proportional to the 4-th power of absolute temperature.

    Therefore if the temperature is quadrupled, the radiant heat energy will increase by a factor of

    4⁴ = 256

    Answer: 256
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