If you heat water slowly at a lower temperature than boiling point, then the water on the surface will evaporate. For example the Sun may heat up water in a puddle and it will slowly evaporate.

Kingdon 2 measured the rates of evaporation of water in the presence of 11 different gases, including hydrogen, oxygen, argon, carbon dioxide and butane. Rates varied over a range of 15 per cent ...

Distillation relies on evaporation to purify water. Contaminated water is heated to form steam ... and other nuisance particles such as iron and hardness from a con- taminated water supply. The ...