evaporation


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e·vap·o·ra·tion

(ē-vap'ŏ-ra'shŭn),
1. A change from liquid to vapor form.
2. Loss of volume of a liquid by conversion into vapor.
Synonym(s): volatilization
[L. e, out, + vaporo, to emit vapor]
Farlex Partner Medical Dictionary © Farlex 2012

e·vap·o·ra·tion

(ē-vap'ŏr-ā'shŭn)
1. A change from liquid to vapor.
2. Loss of volume of a liquid by conversion into vapor.
Synonym(s): volatilization.
[L. e, out, + vaporo, to emit vapor]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

evaporation

the physical change when a liquid becomes a gas. Since such a change usually requires heat as an energy source, heat is drawn from the immediate environment, which produces a significant cooling effect. The size of the cooling effect depends on the latent heat of evaporation of the liquid. Evaporation of water is used by mammals in temperature regulation through sweating, and occurs in plants from the surface of the mesophyll cells during TRANSPIRATION.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Initially, pressure and evaporation rates increase sharply but become constant once boiling starts.
As a result, they were able to accurately establish the evaporation rate for any given raindrop.
The researchers at the University of Missouri-Columbia have developed a system that improves the precision of forecasts by accounting for evaporation in rainfall estimates, particularly for locations 30 miles or more from the nearest National Weather Service radar.
Despite progress being made in regulating the coffee-ring effect and crack formation during droplet evaporation, the methods used often change the nature of the droplet itself, for example, by introducing polymers, inorganic particles, or changing the particle shape, which is unfavorable for producing a high-purity vapor-deposited film.
However, coking of fuel oil and delayed ignition may occur due to the low spray quality and long evaporation time of fuel oils.
However, classic experimental studies [11-13] measuring the evaporation rate at the surface reported that the measured evaporation rate was lower than the value theoretically predicted by the kinetic theory of gas.
Ozgur Sahin, senior author of the research paper, previously developed a machine, known as the evaporation engine, which used changing humidity to prompt bacterial spores to expand and contract, powering a generator.
Evaporation pans are valuable in hydrology since they are simple strong instruments that incorporate the important physical factors, in particular radiation, temperature, humidity, and wind speed, into a single measure of evaporative demand [4, 5].
During drying of soils after a rainfall or irrigation event, shifts between atmospheric demand to soil control evaporation occur with the progressive drying of soils [3].
So the surface of the soil stays moist longer and much less water is lost to evaporation. A layer of mulch can cut down evaporation by as much as 75 percent.