Like the title says, why does a mirror fog up when taking a shower but not when you take a bath? Isn’t the water the same/higher temperature?
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Surface area. Shower water is just as hot as bath water, but it comes out as millions of tiny drops. Evaporation is relative to the surface area. A bunch of small spheres have a much greater surface area than taking the same volume of water and dropping it into a tub.
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