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Is the temperature of empty space defined? What is it?

I am not talking about the cosmos. I mean really empty space, without particles.

Qmechanic
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a06e
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1 Answers1

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If there are no particles or radiation there cannot be a temperature defined as it is dependent on the average kinetic energy .

temperature .

Now in the real universe there are no completerly empty spaces from particles or radiation. The cosmic microwave background radiation has a black body distribution temperature of 3K .

anna v
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