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" Unit is the amount of heat required to raise the temperature of 1 Ib. of water through 1° F., when at its maximum density, 39° F. "
Elementary Science Applied to Sanitation and Plumbers' Work - Page 172
by A. Herring-Shaw - 1910 - 264 pages
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Minutes of Proceedings of the Institution of Civil Engineers, Volume 12

Civil engineering - 1853 - 682 pages
...is necessary to agree, in the first place, on an arbitrary unit of heat, which is usually the heat required to raise the temperature of 1 Ib. of water through 1° Centigrade, or Fahrenheit, and also, on a unit of mechanical effect^ which is usually the "foot-pound,"...
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Iron: An Illustrated Weekly Journal for Iron and Steel ..., Volume 58

Perry Fairfax Nursey - Industrial arts - 1853 - 538 pages
...obtained by the different engines, expressed in pounds lifted 1 foot high, for the unit of heat, or heat required to raise the temperature of 1 Ib. of water through 1° Fahr., was shown thus: INSTITUTION OF CIVIL ENGINEERS. 427 In conclusion, the author referred to his...
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Rock Blasting: A Practical Treatise on the Means Employed in Blasting Rocks ...

George G. André - Blasting - 1878 - 240 pages
...whereby to measure the specific heat of bodies is that of water, the unit being the quantity of heat required to raise the temperature of 1 Ib. of water through 1° Fahr., say from 32° to 33°. The quantity of heat required to produce this change of temperature in...
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Rock blasting, a practical treatise

George Guillinane André - 1878 - 238 pages
...whereby to measure the specific heat of bodies is that of water, the unit being the quantity of heat required to raise the temperature of 1 Ib. of water through 1° Fahr., say from 32° to 33°. The quantity of heat required to produce this change of temperature in...
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Heat and metallurgy

Charles William Siemens - Electricity - 1889 - 616 pages
...is necessary to agree, in the first place, on an arbitrary unit of heat, which is usually the heat required to raise the temperature of 1 Ib. of water through 1° Centigrade, or Fahrenheit, and also, on a unit of mechanical effect, which is usually the " foot-pound,"...
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Elementary Lessons in Heat, Light & Sound

Daniel Evan Jones - Heat - 1891 - 358 pages
...expressed in pounds (instead of grammes) use as your unit of heat the ' pound-degree ' or amount of heat required to raise the temperature of 1 Ib. of water through 1°. The latent heat of water may be taken as 80. 1. What will be the result of mixing 10 Ibs. of snow at...
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Physics for Students of Medicine

Alfred Daniell - Physics - 1896 - 496 pages
...Ib. of water through 1° Fahrenheit; 11690,000000 ergs. (4) The Pound - Centigrade unit : the amount required to raise the temperature of 1 Ib. of water through 1° Centigrade ; 21042,000000 ergs. (5) The Joule : 10,000000 ergs ; the " Practical Electromagnetic "...
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Coal

James Tonge - Coal - 1907 - 292 pages
...commonly written B.Th.U. (both in the singular and plural). Q B.Th.U. represents the amount of heat required to raise the temperature of 1 Ib. of water through 1° F. It has been established by physical science that, to a very high degree of accuracy, the amount...
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Text Book on Motor Car Engineering, Volume 1

Alexander Graham Clark - Automobiles - 1911 - 472 pages
...which these principles are based. The Unit of Heat. — The British Thermal Unit is the amount of heat required to raise the temperature of 1 Ib. of water through 1° P., when at its maximum density, 39° F. ; but it is sufficiently accurate for engineering purposes to...
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Text Book on Motor Car Engineering, Volume 1

Alexander Graham Clark - Automobiles - 1911 - 472 pages
...which these principles are based. The Unit of Heat. — The British Thermal Unit is the amount of heat required to raise the temperature of 1 Ib. of water through 1° F., when at its maximum density, 39° F. ; but it ia sufficiently accurate for engineering purposes...
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