 | Horatio Alvah Foster - 1908 - 1672 strani
...Purple. Green. I.HM N of Radiation of a Black Body. Rtcjaii-Boltzmann law. The total energy radiated by a black body is proportional to the fourth power of its absolute temperature. S — a»*. Wien"» displacement law. The product of the wnve-length of the maximum of radiation and... | |
 | Kenelm William Edward Edgcumbe - 1908 - 242 strani
...glowing " black bodies"; (2) Those based on the Stefan-Boltzmann law, that the heat energy radiated from a " black body " is proportional to the fourth power of its absolute temperature. Pyrometers of the first of these classes are often spoken of as " optical pyrometers," from the fact... | |
 | William Suddards Franklin, Barry MacNutt - 1909 - 376 strani
...centigrade degrees. 11. Stefan's law. — The total radiation (including all wavelengths) from an ideally black body is proportional to the fourth power of its absolute temperature. This law was formulated by Stefan in 1879. It is involved in equation (i), however, as may be shown... | |
 | William Francis Magie - 1911 - 592 strani
...other according to the same law, Stefan's law may also be stated by saying that the radiation from a body is proportional to the fourth power of its absolute temperature. The many departures from this law which have been found by more extended observations are generally believed... | |
 | William Francis Magie - 1911 - 588 strani
...other according to the same law, Stefan's law may also be stated by saying that the radiation from a body is proportional to the fourth power of its absolute temperature. The many departures from this law which have been found by more extended observations are generally believed... | |
 | William Edward Barrows - 1912 - 358 strani
...known as the StefanBoltzmann law_o£_ radiation. Briefly this law is that the total radiation from a black body is proportional to the fourth power of its absolute temperature or, l£=fc7^M±. 273)1 (2) where T is the absolute temperature; t the temperature in centigrade degrees;... | |
 | Samuel Lawrence Bigelow - 1912 - 568 strani
...Sun's measured spectrum Stefan's Law. It has been found that the sum of the radiations from a perfectly black body is proportional to the fourth power of its absolute temperature. This formulation is known as Stefan's law (Josef Stefan, 1835-1893). The phrase "perfectly black body"... | |
 | James Ambrose Moyer - 1913 - 512 strani
...of any of the other types. The principle of operation is that the energy radiated by a so-called " black " body is proportional to the fourth power of its absolute temperature. The instrument illustrated consists of a cylindrical case set upon a tripod. This case contains a concave... | |
 | Henry Wysor - 1914 - 418 strani
...pyrometer based upon this principle and the Stefan-Boltzman Law, which holds that the radiation from a black body is proportional to the fourth power of its absolute temperature. The Fery pyrometer consists essentially of a telescope tube containing a concave mirror, a delicate thermo-couple... | |
 | 1919 - 1102 strani
...visible radiation. Practically all the energy is radiated as heat. As the temperature increases Am decreases and the proportion of visible radiation...determine by observation the value of % which makes £(A) a maximum, Wien's law enables us to determine T. In this way the temperature of the sun has been... | |
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Stefan-Boltzmann law states that the total energy of a black body is proportional to the fourth power of its absolute temperature. 
