- #1
Galap
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Everyone who lives in a region that gets cold knows that if you exhale onto a window, the water vapor in your breath condenses onto the surface. Because the air is dry, this condensation evaporates. What puzzles me about it is why it does so from the edge of the fogged region to the center, as opposed to all at once.
Of course the 'fog' is actually made up of many small droplets. Upon close inspection, it can be seen that the droplets shrink and disappear, but only those on the edge of the zone do this, as if they 'know' whether or not they are surrounded by other droplets. Why does this happen?
Of course the 'fog' is actually made up of many small droplets. Upon close inspection, it can be seen that the droplets shrink and disappear, but only those on the edge of the zone do this, as if they 'know' whether or not they are surrounded by other droplets. Why does this happen?