Evaporation

Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance. The other type of vaporization is boiling, which is characterized by bubbles of saturated vapor forming in the liquid phase.

Quotes

 * In general, the rate of evaporation (m) of a substance in a high vacuum is related to the pressure (p) of the saturated vapor by the equation $$m=\sqrt{\frac{M}{2\pi RT}}p.$$ Red phosphorus and some other substances probably form exceptions to this rule.
 * Irving Langmuir, "The Constitution and Fundamental Properties of Solids and Liquids. Part I. Solids.", Journal of the American Chemical Society, September 5, 1916