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## Main Question or Discussion Point

I am trying to understand the behavior of blackbodies in interaction with each other.

Conditions as follows.

[itex] 1)[/itex] There are two blackbodies, say [itex]B_1[/itex] and [itex]B_2[/itex], with corresponding temperature [itex]T_1[/itex] and [itex]T_2[/itex].

[itex]2)[/itex] Initially [itex]T_1>T_2[/itex].

[itex]3)[/itex] [itex]B_1[/itex] and [itex]B_2[/itex] have thermal contact only through radiation exchange.

And finally my question,

Can [itex]B_2[/itex] give energy to [itex]B_1[/itex] or is this prevented by the second law?

Conditions as follows.

[itex] 1)[/itex] There are two blackbodies, say [itex]B_1[/itex] and [itex]B_2[/itex], with corresponding temperature [itex]T_1[/itex] and [itex]T_2[/itex].

[itex]2)[/itex] Initially [itex]T_1>T_2[/itex].

[itex]3)[/itex] [itex]B_1[/itex] and [itex]B_2[/itex] have thermal contact only through radiation exchange.

And finally my question,

Can [itex]B_2[/itex] give energy to [itex]B_1[/itex] or is this prevented by the second law?