Why do we see water droplets on the outer surface of a glass containing ice cold water?
Question
Why do we see water droplets on the outer surface of a glass containing ice cold water?
Solution
The phenomenon of seeing water droplets on the outer surface of a glass containing ice cold water is due to condensation. Here are the steps explaining why this happens:
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When you pour cold water into a glass, the glass itself becomes cold.
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The air around the glass also cools down.
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The water vapor present in the air, when comes in contact with the cold glass, loses its energy.
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When the water vapor loses energy, it changes its state from gas to liquid, a process known as condensation.
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These water droplets that you see are the result of that condensation process.
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So, the water droplets on the outer surface of the glass are not from the inside of the glass but from the air surrounding the glass.
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