An inert object can only emit as much radiant energy as it absorbs. But this has never stopped greenhouse effect theorists from trying to convince you otherwise.
Here’s what happens when a CO2 molecule absorbs infrared light at a particular frequency.
it vibrates - meaning, it heats up – and then transmits this energy as light in all possible directions. In other words, the molecule radiates when excited. Important to understand is that a CO2 molecule does not absorb infrared light of every frequency (color), only a few. Being a gas, it lets most radiant energy pass right through.
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