Dew
Droplets of water condensed from the air or atmosphere.
We usually see
dew
on the grass or leaves early in the morning.
Links
http://en.wikipedia.org/wiki/Dew
http://weathersavvy.com/Q-Science_Dewpoint.html
http://www.weatherquestions.com/What_is_dewpoint_temperature.htm
http://photo-dictionary.com/phrase/104/dew.html