| John Pringle Nichol - Physics - 1860 - 942 pages
...exact equivalence, capable of easy statement, holds between tlicse heat motions, and ordinary motions. The amount of heat necessary to raise the temperature of one pound of water one Fahrenheit degree from 32°, is called the thermal unit, and this thermal unit is accompanied... | |
| Henry Evers - Steam - 1873 - 176 pages
...graduated, to enable the observer to read off easily the change in temperature. 18. Unit of Heat. — A unit of heat is the amount of heat necessary to raise the temperature of a pound of water one degree. Suppose a pound of water to be raised from 10°C. to 20°C., it has... | |
| Henry Evers - Locomotives - 1873 - 168 pages
...graduated, to enable the observer to read off easily the change in temperature. 18. Unit of Heat. — A unit of heat is the amount of heat necessary to raise the temperature of a pound of water one degree. Suppose a pound of water to be raised from 10° C. to 20°C.,it has... | |
| American Gas Light Association - Gas - 1903 - 678 pages
...temperature between 32° and 212°, that in general the British thermal unit may be safely taken as the amount of heat necessary to raise the temperature of one pound avoirdupois of pure water one degree Fahrenheit. Thus, we may say that to raise the temperature of... | |
| Isaac Todhunter - Physics - 1877 - 450 pages
...we must select a unit of heat, which is also termed a thermal unit. Tims wo may_ take for this unit the amount of heat necessary to raise the temperature of one pound of water from 0° C. to 1° C.; or we may take for this unit tho amount of heat necessary to melt one... | |
| Thomas Newbigging - 1883 - 514 pages
...ditto. 1 Ib. of carbonic oxide, burning to carbonic acid, yields 4478 ditto. NOTE. — The standard unit of heat is the amount of heat necessary to raise the temperature of a pound of water 1° Fahr. As a rule, when firing with coke, cleaning off the fire bars once in... | |
| Noah Webster - 1884 - 362 pages
...unit chosen for tho comparison or calculation of the quantity of heat. That most commonly employed Is the amount of heat necessary to raise the temperature of one pound of water one degree centigrade. In Franco the thermal unit in the rnlorie. ThCr'mal-ly, adv. Ina thermal... | |
| Engineering - 1879 - 542 pages
...out, in the process of combustion, rather more than 14,000 British units of heat, each such unit being the amount of heat necessary to raise the temperature ] of one pound of water 1° Fahrenheit of j heat. To effect this combustion, 140 cubic feet of atmospheric air, weighing... | |
| Sturtevant, B. F., Co - Heating - 1896 - 184 pages
...condensation of that steam, reappear as available for heating. The standard unit of heat is equivalent to the amount of heat necessary to raise the temperature of one pound of water through one degree Fahrenheit at its point of greatest density. A heat unit is not to be confounded... | |
| Ira Remsen - Chemistry, Physical and theoretical - 1887 - 330 pages
...vessels called calorimeters, so that all the heat evolved or absorbed can be measured. The heat unit is the amount of heat necessary to' raise the temperature of one gram of water one degree centigrade. This is called a calorie and is represented by the letter c. In... | |
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