Why a glass filled with a cold beverage seems to sweat?

The phenomena is a good explanation of the condensation processes that is happening in our atmosphere.

There are lots of water vapor around us. As this water vapors touch the out side portion of a cold glass, the cold temperature within a cold glass condenses those water vapors, thus, converting it from a gaseous state to a liquid state. Since in its liquid form, it is more denser than gas, the water formed as we termed sweat appears and flow outside a cold glass.