evaporation theory
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Evaporation — is the process by which molecules in a liquid state (e.g. water) spontaneously become gaseous (e.g. water vapor). It is the opposite of condensation. Generally, evaporation can be seen by the gradual disappearance of a liquid when exposed to a… … Wikipedia
Flash evaporation — Flash (or partial) evaporation is the partial vaporization that occurs when a saturated liquid stream undergoes a reduction in pressure by passing through a throttling valve or other throttling device. This process is one of the simplest unit… … Wikipedia
M-theory — For a generally accessible and less technical introduction to the topic, see Introduction to M theory. String theory … Wikipedia
Dynamic awareness theory — (DAT) offers an alternative to explaining the creation of awareness in distributed work groups. DAT highlights the important role of users and social practices in awareness creation. The theory further points to the dynamic nature of awareness… … Wikipedia
Black Sea deluge theory — The Black Sea deluge is a hypothesized prehistoric flood that occurred when the Black Sea filled rapidly. The theory made headlines when The New York Times published it in December 1996. Flood hypothesis In 1998, William Ryan and Walter Pitman,… … Wikipedia
Dynamical theory of heat — Heat Heat (h[=e]t), n. [OE. hete, h[ae]te, AS. h[=ae]tu, h[=ae]to, fr. h[=a]t hot; akin to OHG. heizi heat, Dan. hede, Sw. hetta. See {Hot}.] 1. A force in nature which is recognized in various effects, but especially in the phenomena of fusion… … The Collaborative International Dictionary of English
Sahara pump theory — The Sahara Pump Theory explains how flora and fauna left Africa to penetrate the Middle East and beyond to Europe and Asia. African pluvial periods are associated with a wet Sahara phase during which larger lakes and more rivers exist. [cite… … Wikipedia
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Hawking radiation — is a thermal radiation with a black body spectrum predicted to be emitted by black holes due to quantum effects. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also… … Wikipedia
climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… … Universalium
Black hole — For other uses, see Black hole (disambiguation). Simulated view of a black hole (center) in front of the Large Magellanic Cloud. Note the gravitat … Wikipedia
