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mrspeedybob
#3
Jan28-13, 05:36 AM
P: 699
Sure it's a question about the sky. If the earth is at a stable temperature that means that it absorbs about as much energy from it's surroundings (the sky) as it emits.

Earth is at thermal equilibrium with with it's surroundings (more or less), so when the tin can is in thermal equilibrium it will be at the same average temperature.