Umov Vector

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Umov Vector

the vector of the flux density of energy in a physical field; its magnitude is equal to the energy transferred per unit time through unit area surface perpendicular to the direction of energy flux at a given point. The vector is named after N. A. Umov, who, in 1874, was the first to introduce the general concept of energy flux in a continuous medium, based on the law of conservation of energy. The density of the energy flux of an electromagnetic field was determined, based on Maxwell’s equations, by the English physicist J. H. Poynting and is called the Poynting vector.

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No references found			Umbrians Umbriel UMD UMDL Umea Umeå Umeälv Umealven Umeälven Umehara, Sueji Umet Umetaliev, Temirkul Umiak Umkehr effect Umklapp process umkokola UML Umlaut Umm al-Qaiwain Umm Qasr Umm Said Umma Umnak Umoja Karamu UMOS Umov Vector Umov, Nikolai Umov, Nikolai Alekseevich UMP umpire Umpqua Lighthouse State Park Umpqua National Forest UMS Umtali Umtata UMTS Umurzakov, Eliubai UN*X Una Unabomber unaka unakite Unalaska Unalaska Island unambiguous name unamplified back bias Unamuno Unamuno y Jugo, Miguel de Unamuno, Miguel de Unanimism Unanimity Principle in the United Nations			UMO UMOA UMOC UMOD UMODPC UMOFC UMOH UMOHS UMOI Umoja Karamu Umoja wa Wanawake wa Tanzania UMOL UMOM UMON Umonhon Nation Public School UMOP UMOPAR UMOPL UMOPN UMOS UMOS UMOSEA UMOSFET UMOT UMOUN Umov Vector Umov, Nikolai Umov, Nikolai Alekseevich Umov-Poynting vector UMOVE UMOZ ump ump ump ump UMP synthase deficiency UMP synthase deficiency UMP synthase deficiency UMP/AMIL UMP2 UMP4SDTQ UMPA UMPAL UMPAP UMPB Umpc Umpc UMPD UMPDS UMPDU UMPE umped umped umped UMPERG UMPERSA

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