Evaporation is the conversion of a liquid by heat into vapour, which passes into the atmosphere. The process of evaporation is constantly going on at the surface of the earth, but principally at the surface of the sea, of lakes, rivers, and pools. The vapour thus formed, being specifically lighter than atmospheric air, rises to considerable heights above the earth's surface; and afterwards, by a process of cooling, is partially condensed, forms clouds, and finally descends in rain. The effect of evaporation is to reduce the temperature of the evaporating liquid; and the most intense degree of cold with which we are acquainted is caused by the evaporation of volatile liquids, such as ether, or, still better, liquid air. In the animal body evaporation from the skin and lungs is one of the most obvious causes of diminution of temperature. Research Evaporation
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Abbreviations
SciTech
Research Evaporation
