Two identical metal balls, one at T 1 =300 K and the other at T 2 =600 K are kept at a distance of 1 m in vacuum. Will the temperatures equalize by radiation? Will the rate of heat gained by the colder sphere be proportional to T 24 -T 14 as may be expected from the Stefan’s law?

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Arun · Answer

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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Two identical metal balls, one at T 1 =300 K and the other at T 2 =600 K are kept at a distance of 1 m in vacuum. Will the temperatures equalize by radiation? Will the rate of heat gained by the colder sphere be proportional to T 24 -T 14 as may be expected from the Stefan’s law?

Two identical metal balls, one at T1=300 K and the other at T2=600 K are kept
at a distance of 1 m in vacuum. Will the temperatures equalize by radiation? Will
the rate of heat gained by the colder sphere be proportional to T24-T14 as may be
expected from the Stefan’s law?

1 Answers

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Two identical metal balls, one at T 1 =300 K and the other at T 2 =600 K are kept at a distance of 1 m in vacuum. Will the temperatures equalize by radiation? Will the rate of heat gained by the colder sphere be proportional to T 24 -T 14 as may be expected from the Stefan’s law?

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 T24-T14 as may beexpected from the Stefan’s law?

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Two identical metal balls, one at T1=300 K and the other at T2=600 K are kept
at a distance of 1 m in vacuum. Will the temperatures equalize by radiation? Will
the rate of heat gained by the colder sphere be proportional to T24-T14 as may be
expected from the Stefan’s law?