why do cups and bowls get wet on the outside?

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Where does the moisture come from? How does water collect?

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6 Answers

Anonymous 0 Comments

This only works for cups and bowls with cold stuff in it, but the temperature difference condenses the water vapour in the air around the bowl. If the temperature difference is large enough, lots of water droplets form.

Anonymous 0 Comments

The water vapor in the air, when cooled down, condenses into a liquid. This only works when the surface is cold and the air is relatively humid.

Anonymous 0 Comments

This only works for cups and bowls with cold stuff in it, but the temperature difference condenses the water vapour in the air around the bowl. If the temperature difference is large enough, lots of water droplets form.

Anonymous 0 Comments

The water vapor in the air, when cooled down, condenses into a liquid. This only works when the surface is cold and the air is relatively humid.

Anonymous 0 Comments

Air holds some water in it – we call this humidity – the percentage of humidity is “how full” the air is. That depends on temperature though, hotter air holds more water, and colder air can hold less.

Soooo, if you have humid warm air – when it comes in contact with the cooler surface of the bowl, the air also cool down. If the air cools down enough – it will hit 100% humidity and can’t hold anymore water – so it will start beading up on the outside of the bowl.

Anonymous 0 Comments

Air holds some water in it – we call this humidity – the percentage of humidity is “how full” the air is. That depends on temperature though, hotter air holds more water, and colder air can hold less.

Soooo, if you have humid warm air – when it comes in contact with the cooler surface of the bowl, the air also cool down. If the air cools down enough – it will hit 100% humidity and can’t hold anymore water – so it will start beading up on the outside of the bowl.