roughness effect

roughness effect
аэрд. влияние шероховатости

Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. . 1974.

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  • Roughness — is a measure of the texture of a surface. It is quantified by the vertical deviations of a real surface from its ideal form. If these deviations are large, the surface is rough; if they are small the surface is smooth. Roughness is typically… …   Wikipedia

  • Roughness Length — (z 0) is a parameter which is a measure of terrain roughness as seen by surface wind. It is formally the height (in meters) at which the wind speed becomes zero when the logarithmic wind profile above the roughness sub layer is extrapolated to… …   Wikipedia

  • Triboelectric effect — Triboelectric series: Most positively charged + Air Human skin Leather Rabbit s fur Glass Quartz Mica Human hair …   Wikipedia

  • BIEGELEISEN — POLAND (see also List of Individuals) 3.5.1881 Lwów/PL 31.5.1963 Warszawa/PL Bronisław Biegeleisen graduated as a mechanical engineer from the Berlin Technical University and then was an assistant of Hermann Rietschel (1847 1914). From 1907,… …   Hydraulicians in Europe 1800-2000

  • LAUFER — HUNGARY (see also List of Individuals) 22.9.1921 Székesférhvár/H 9.7.1983 Columbia SC/USA John (János) Laufer came to the USA in 1939 and was naturalized there in 1949. He was a physicist at the National Bureau of Standards NBS, Washington DC… …   Hydraulicians in Europe 1800-2000

  • ZEGZHDA — RUSSIA (see also List of Individuals) 19.3.1900 Spasskoe/RU 14.5.1955 Leningrad/RU Aleksei Petrovich Zegzhda graduated in 1929 from the Leningrad Polytechnic Institute LPI as a civil engineer, there submitted in 1937 a PhD thesis and gained the… …   Hydraulicians in Europe 1800-2000

  • 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

  • Electron mobility — This article is about the mobility for electrons and holes in metals and semiconductors. For the general concept, see Electrical mobility. In solid state physics, the electron mobility characterizes how quickly an electron can move through a… …   Wikipedia

  • Contact mechanics — Continuum mechanics …   Wikipedia

  • Consonance and dissonance — For the mental phenomena, see Cognitive dissonance. For the stylistic device often used in poetry, see Literary consonance. In music, a consonance (Latin com , with + sonare, to sound ) is a harmony, chord, or interval considered stable, as… …   Wikipedia

  • river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

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