| Ellsworth Huntington - Sunspots - 1923 - 336 pages
...able to cool by radiation more rapidly than can cool air in low latitudes, for the radiation varies as the difference between the fourth powers of the absolute temperatures of the radiating and receiving bodies. The difference between the fourth powers of 290° and 300° (absolute... | |
| William Noble Lacey - Analytical chemistry - 1924 - 112 pages
...also approximates a black body, giving an energy transfer to the receiver which is proportional to the difference between the fourth powers of the absolute temperatures of the black bodies. This energy transfer is measured in the various instruments by having the receiving black... | |
| 1925 - 1064 pages
...RADIATION LOSSES The Stefan-Boltzman law states that the energy radiated by a hot body is proportional to the difference between the fourth powers of the absolute temperatures of the hot body and its surroundings. An emissivity coefficient is necessary in order to calculate the actual... | |
| American Society of Mechanical Engineers - Mechanical engineering - 1926 - 1436 pages
...to study closely the laws of radiant heat as well as those of convection as applied to furnaces. as the difference between the fourth powers of the absolute temperatures of the hot and cold bodies. This takes the form H — Ä(7V — T2*), where H is the heat transferred in unit time, K a... | |
| Institution of Engineers and Shipbuilders in Scotland - Engineering - 1927 - 1094 pages
...emitting and receiving radiant energy. The amount of heat transfer for an ideal black body varies as the difference between the fourth powers of the absolute temperatures of the hot and cold bodies, as H = K[T14-T34] (Stefan and Boltzmann's law). To get the greatest advantage, therefore, from... | |
| Cochrane Corporation (Philadelphia) - Steam engineering - 1928 - 816 pages
...and smoke. Summarizing, it can be said that the quantity of heat imparted to a boiler by radiation depends (a) On the extent of the hot surfaces of the...angle of exposure to the cold surfaces of the boiler. (b) On the difference of the fourth powers of the absolute temperatures of hot and cold surfaces. In... | |
| Pearl Edwin Thomas - Cold storage - 1928 - 562 pages
...surfaces, for it will be remembered that the rate of heat transfer by radiation is proportional to the difference between the fourth powers of the absolute temperatures of the surfaces involved, subject only to correction for losses due to imperfections in radiating and absorbing... | |
| Arthur Sperry Pearse, Frank Gregory Hall - Animal heat - 1928 - 142 pages
...determining factor in the amount of radiation from it. The total heat-loss by radiation is proportional to the difference between the fourth powers of the absolute temperatures of the body and its environment, if the area and nature of the surface remain constant. It follows then that... | |
| D. McK. Kerslake - Science - 1972 - 336 pages
...detail in Chapter 3. For the present it is sufficient to indicate that although the process depends on the difference between the fourth powers of the absolute temperatures of the two surfaces, an approximation is often permissible whereby the rate of heat transfer is related to... | |
| James F. Carley - Technology & Engineering - 1993 - 584 pages
...HEAT TRANSFER, ws, requiring no contact or fluid between the bodies. The net rate is proportional to the difference between the fourth powers of the absolute temperatures of the hotter and cooler bodies (7"i - 7^), and depends also on the thermal "color" of the bodies (their emissivities),... | |
| |