Heat is energy and cold is lack of energy. When something gets cooled down it’s energy is taken away and it’s not able to do as much.
Warm air can hold More moisture than a cold surface can. Does the warm energetic air moves around It’s carrying around the water, but once it hits the cold surface it loses the energy to hold the water and it leaves it as condensation on the glass.
To get rid of the water on the glass you need to use energy. You could heat up the glass so that the water gets energetic and goes back into the air. Or you can blow air at the window which had to energy to the air and makes it float away.
You could also use a squeegee to push all the water away, But that doesn’t fit the topic
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