Assuming you're not in an endless vacuum, the light will also become heat.
replyI think it's fair to separate it from the direct heat generation because if you look at second order effects like that, pretty much all of the energy ends up being radiated away as infrared in space.
replyIt's hardly a second order effect if you're talking about heating a space and the light is absorbed by the walls of that space.
replyIt's quite literally a second order effect. The first order effect is light generation, and a consequence of that effect is heat generation via light absorption.
replyDepends on where you want to draw the lines. Heating the room and emitting light could both be a second-order effect if you want to say that the first order is heating up the actual heater.
replyNice point! Would it be the same for sound that doesn't escape a room?
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