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" ... conditions. He also showed that the same coefficient of proportionality between work and heat applied when the conversion was effected by means other than friction. His final result, obtained by friction of water (Phil. Trans., 1850), was that 772-5... "
Acoustics, Light, and Heat - Page 234
by William Lees - 1877 - 299 pages
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Transactions

Society of Engineers (London, England) - 1875 - 212 pages
...one degree Fahr. The quantity of heat required to raise one pound of air one degree Fahr. is - 238 unit. The quantity of heat required to raise one pound of water to a temperature of 600° is 600 units. The quantity of heat required to raise one pound of air to...
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Hand-book to diagrams in light and heat. 4 sheets. [With] Johnston's ...

William Lees - 1881 - 100 pages
...quantity of heat required to produce a stated effect, as, for example, to raise them 1° F. or 1° C. In order to measure or compare the capacities of different...as the unit, the quantity of heat required to raise 1 Ib. of water 1° C. at the standard temperature. It is called the thermal unit. We infer, therefore,...
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Van Nostrand's Engineering Magazine, Volume 24

1881 - 612 pages
...other forms of energy in the relation of what is known as Joule's equivalent, that is, that one thermal unit (the quantity of heat required to raise one pound of water at 39.4° Fahr., one degree in temperature) is equal to the energy required to raise 772 Ibs. 1 foot,...
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The American Steam Engineer, Theoretical and Practical: With Examples of the ...

Emory Edwards - 1888 - 540 pages
...employed in performing the work of lifting 2,160 pounds one foot high. Dividing 2,160 by 2.8, we find that the quantity of heat required to raise one pound of water 1° Fah. is competent to lift 772 pounds a foot high. This z'j, therefore, the mechanical equivalent of...
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A Dictionary of Electrical Words, Terms and Phrases

Edwin James Houston - 1889 - 684 pages
...degree centigrade. Another heat unit, very generally employed in the United States and England, is the quantity of heat required to raise one pound of water 1° Fahrenheit. (See Calorie. Heat Unit, English. Joule. Volt- Coulomb.) Heat, AhNorptioii and Generation...
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Radford's Cyclopedia of Construction: Carpentry, Building and ..., Volume 5

William A. Radford, Alfred Sidney Johnson - 1909 - 470 pages
...measuring the amount of heat absorbed or emitted during any operation by any body or substance. It is the quantity of heat required to raise one pound of water 1° in temperature, Fahr., at sea-level. Specific heat is the capacity of a substance for heat. It is the...
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A Text Book on Welding and Cutting Metals by the Oxyacetylene Process

Vulcan Process Co, Charles Herbert Burrows - 1915 - 156 pages
...necessary to distinguish between the methods in which different standards are employed. The British Thermal Unit. — The quantity of heat required to raise one pound of water one degree Fahrenheit, is called a British Thermal Unit. Instead of writing out the words British Thermal...
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The Encyclopedia Americana: A Library of Universal Knowledge, Volume 10

1918 - 844 pages
...expressions of economy based on the amount of fuel consumed is the Brit'sh Thermal Unit (BTU), which is the quantity of heat required to raise one pound of water 1" F. at or about 39.1° F. According to Joule, it is equivalent to 778 foot-pounds of mechanical energy....
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The Encyclopedia Americana: A Library of Universal Knowledge, Volume 10

1918 - 842 pages
...expressions of economy based on the amount of fuel consumed is the British Thermal Unit (BTU), which is the quantity of heat required to raise one pound of water 1° F. at or about 39.1° F. According to Joule, it is equivalent to 778 foot-pounds of mechanical energy....
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Properties of Steam and Thermodynamic Theory of Turbines

Hugh Longbourne Callendar - 1920 - 552 pages
...of water (Phil. Trans., 1850), was that 772-5 foot-pounds of work at Manchester were equivalent to the quantity of heat required to raise one pound of water 1° F. in temperature at 62° F. on the scale of his mercury thermometers. At a later date, when the absolute...
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