How come when ever I have a cup of water and I leave it on the table it has a ring of water on the bottom?!
and why does it always do that?
Answers: Please star is you think that this is a good question.
and why does it always do that?
Because of the temperature change, which causes sweating on the outside of the cup.=)
condensation on the glass and no star dumb ?
http://en.wikipedia.org/wiki/Condensatio...
The glass sweats from the cold liquid inside the glass.
temp differentials of the air and water can affect condensation as well as humidity of the surrounding air.
you need a coaster. your cup is sweating.
temperature difference, or your didnt get it all in your cup.
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