Stefan's constant

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• Stefan–Boltzmann constant — The Stefan–Boltzmann constant (also Stefan s constant), a physical constant denoted by the Greek letter σ, is the constant of proportionality in the Stefan–Boltzmann law: the total energy radiated per unit surface area of a black body in unit… …   Wikipedia

• Stefan-Boltzmann constant — Stefano ir Bolcmano konstanta statusas T sritis Standartizacija ir metrologija apibrėžtis Visiškojo spinduolio energinį šviesį M ir termodinaminę temperatūrą T siejanti konstantaσ: M = σ T⁴; σ = 5,670 400(40) · 10⁻⁸ W · m⁻² · K⁻⁴. atitikmenys:… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• Stefan-Boltzmann constant — Stefano ir Bolcmano konstanta statusas T sritis fizika atitikmenys: angl. Stefan Boltzmann constant vok. Stefan Bolzmannsche Konstante, f; Strahlungskonstante, f rus. постоянная Стефана Больцмана, f pranc. constante de Stefan Boltzmann, f …   Fizikos terminų žodynas

• Stefan-Boltzmann constant — constant of proportionality used in radiation heat transfer, whose value is 5.669 10 8 W/m2 K4. For a blackbody, the heat flux emitted is given by the product of s and the absolute temperature to the fourth power …   Mechanics glossary

• STEFAN, METROPOLITAN° — (Stoyan Popgueorguiev; 1878–1957), head of the Bulgarian Orthodox Church in World War II and Righteous Among the Nations. Starting from January 1940, the government of Bulgaria was headed by a Fascist regime which favored a pro German alignment,… …   Encyclopedia of Judaism

• Stefan–Boltzmann law — The Stefan–Boltzmann law, also known as Stefan s law, states that the total energy radiated per unit surface area of a black body in unit time (known variously as the black body irradiance, energy flux density, radiant flux, or the emissive… …   Wikipedia

• Stefan–Boltzmann law — ▪ physics       statement that the total radiant heat energy emitted from a surface is proportional to the fourth power of its absolute temperature. Formulated in 1879 by Austrian physicist Josef Stefan (Stefan, Josef) as a result of his… …   Universalium

• Stefan , Josef — (1835–1893) Austrian physicist Stefan was educated in his native Klagenfurt and at the University of Vienna. In 1863 he became professor of mathematics and physics at Vienna University and remained there for the rest of his life. Stefan s wide… …   Scientists

• Stefan-Boltzmannsche Konstante — Stefano ir Bolcmano konstanta statusas T sritis Standartizacija ir metrologija apibrėžtis Visiškojo spinduolio energinį šviesį M ir termodinaminę temperatūrą T siejanti konstantaσ: M = σ T⁴; σ = 5,670 400(40) · 10⁻⁸ W · m⁻² · K⁻⁴. atitikmenys:… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• Stefan-Bolzmannsche Konstante — Stefano ir Bolcmano konstanta statusas T sritis fizika atitikmenys: angl. Stefan Boltzmann constant vok. Stefan Bolzmannsche Konstante, f; Strahlungskonstante, f rus. постоянная Стефана Больцмана, f pranc. constante de Stefan Boltzmann, f …   Fizikos terminų žodynas

• constant — dielectric constant Stefan Boltzmann constant …   Mechanics glossary