 | Eben Norton Horsford - 1860 - 74 стор.
...pressure of b ? SPECIFIC HEAT AND CHANGE OF MOLECULAR ARRANGEMENT OF BODIES. I. If the quantity of heat necessary to raise the temperature of 1 pound of water 1° be taken as unity, what is the quantity necessary to raise m pounds of water from 0° toi0? II. If... | |
 | 1985 - 1038 стор.
...to the thermal equivalent using British thermal units (Btu). A Btu is the amount of energy required to raise the temperature of 1 pound of water 1 degree Fahrenheit at or near 39.2 degrees F. Factors are calculated annually from the latest final annual data available,... | |
 | Joseph M'Gregor Robertson - 1884 - 558 стор.
...work measured by 772 foot-pounds. If, instead of the Fahrenheit, the Centigrade scale be used, then the amount of heat necessary to raise the temperature of 1 pound of water 1° C. is equivalent to 1,392 footpounds mechanical work. The unit of heat, or thermal unit, may also be... | |
 | Joseph M'Gregor Robertson - 1884 - 554 стор.
...equivalent to an amount of heat sufficient to raise the temperature of 1 pound of water 1° Fahr. But the amount of heat necessary to raise the temperature of 1 pound of cold water 1° Fahr. is called the unit of heat, so that the unit of heat is equal to mechanical work... | |
 | 1899 - 676 стор.
...The rope is supposed to consist of 7 strands. 19 wires to the strand, (c) A British thermal unit is the amount of heat necessary to raise the temperature of 1 pound of water 1 degree Fahrenheit. * * * (308) Is it wise, from the standpoint of economy, to make steam in a ISO-horsepower toiler for... | |
 | 1927 - 524 стор.
...when the temperature difference between the surfaces of the layer is maintained at 1° F. A B. tu is the amount of heat necessary to raise the temperature of 1 pound of water 1° F. The insulating value or thermal resistivity of a material is equal to the reciprocal (one divided... | |
 | William Henry Booth - 1903 - 440 стор.
...536-4 3,231 240-7 4,066 289-4 3,833 B.Th.U. 314-3 212-8 1,282 9,784 1,613 114-8 1,521 measures it is the amount of heat necessary to raise the temperature of 1 pound of water through 1°F. at or near 32°F. In the metric system it is the amount of heat necessary to raise the... | |
 | American School (Chicago, Ill.) - 1903 - 494 стор.
...required to raise the temperature of one pound of water one degree Fahrenheit. Experiment shows that the amount of heat necessary to raise the temperature of 1 pound of water 5 degrees is 5 BTU Also 5 BTU will raise the temperature of 5 pounds of water 1 degree. Now, if we... | |
 | American School (Chicago, Ill.) - 1903 - 390 стор.
...that they may be firmly fixed in the mind. The British thermal unit is the amount of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit, and is equivalent to 778 foot-pounds of mechanical energy. The French calorie is the amount of heat... | |
 | Ernst von Schwartz - 1904 - 456 стор.
...from the heating effect it exercises on other substances. The unit for this purpose is the calory or heat unit, being the amount of heat necessary to raise the temperature of unit mass (1 gram or 1 kilo, of water) from an initial temperature (zero Centigrade) through one... | |
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British thermal unit is the amount of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit. 
