fogged mirrors

jlwhite · #1 Dec 30, 2006, 01:17 PM

Why does the bathroom mirror become fogged while you are taking a shower?

ballengerb1 · Dec 31, 2006, 04:34 PM

It will only fog if you take a hot shower. The hot water raises the relative humidity in the room to nearly 100%, saturation. At that level of humidity the moist air condenses on the mirror because the mirror glass is cooler than the air around it.



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