2 upvotes, 1 direct replies (showing 1)
View submission: Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
When you are just trying to get a predictable amount of heat into a closed system, does a 100 Watt incandescent light bulb input an equal amount of heat energy as a 100 Watt heater?
Comment by chronoflect at 14/09/2022 at 20:20 UTC
3 upvotes, 1 direct replies
Yes, energy is always conserved in a closed system. The incandescent light will output some of its energy as visible light, but that light will be absorbed and eventually turn into heat.