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Two identical metal balls, one at T1=300 K and the other at T2=600 K are keptat a distance of 1 m in vacuum. Will the temperatures equalize by radiation? Willthe rate of heat gained by the colder sphere be proportional to T2^4-T1^4 as may beexpected from the Stefan’s law?

dhananjay shimpi , 9 Years ago
Grade
anser 1 Answers
Abhishek Kumar

Last Activity: 9 Years ago

Yes it will. If you neglect convection, time taken to neutralize would be longer.
The above relation is valid for radiation energy transfer. Formula for convection is proportional to temperature difference.

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