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" Btu is the amount of energy required to raise the temperature of 1 pound of water 1 degree Fahrenheit (F) at or near 39.2 degrees F. "
Family Economics Review - Page 7
1993
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Harper's New Monthly Magazine, Volume 40

Henry Mills Alden, Frederick Lewis Allen, Lee Foster Hartman, Thomas Bucklin Wells - 1870 - 960 pages
...among English-speaking people, by what is called the Fahrenheit «nit of /¡eat, which is that quantity required to raise the temperature of 1 pound of water 1 degree of Fahrenheit's thermometer. The .French measure heat and force in a similar manner, deriving their...
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Statistical Abstract of the United States

1985
...cubic feet, barrels, kilowatt-hours) 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;...
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Statistical Abstract of the United States, Volume 111

1991 - 1022 pages
...cubic feet, barrels, kilowatthours) 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 (F) at or near 39.2 degrees F. Factors are calculated annually from the latest final annual data available;...
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Statistical Abstract of the United States

1998 - 1266 pages
...cubic feet, barrels, kilowatt-hours) 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 (F) at or near 39.2 degrees F. Factors are calculated annually from the latest final annual data available;...
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Statistical Abstract of the United States

1988 - 1000 pages
...cubic feet, barrels, kilowatthours) to the thermal equivalent using British thermal units (Blu). A i is the amount of energy required to raise the temperature of 1 pound of water 1 degree Fahrleit (F) at or near 39.2 degrees F. Factors are calculated annually from the latest final annual...
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A Text-book of human physiology v.1, Volume 1

Leonard Landois - 1891 - 606 pages
...— Asa standard of measure of heat, we have the "heat-unit" or calorie. The " heat-unit " or calorie is the amount of energy required to raise the temperature of 1 gram of water 1° centigrade. Tlie "heat-unit" corresponds to 425'5 gram-metres, ie, the same energy...
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Natural Philosophy

Isaac Sharpless, George Morris Philips - 1892 - 384 pages
...sensible heat by the expansion of some material, generally mercury. The unit of heat is the amount required to raise the temperature of 1 pound of water 1 degree Fah. The specific heat of any substance is the number of units required to raise the temperature of...
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Practical Domestic Hygiene

James Lane Notter, Sir Robert Hammill Firth, Robert Hammill Firth - 1897 - 330 pages
...of a thermometer ; in foreign countries, using the metric system of weights and measures, the heat unit is the amount of energy required to raise the temperature of one gramme of water one degree Centigrade. The British heat unit, if manifested as a mechanical force,...
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Science and Industry: 1898-99, Volume 3

1899 - 676 pages
...measure of heat is the British thermal unit, usually abbreviated to BTU One BT IT. is the amount of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit. The loss due to friction is the difference between the IHP and DHP Thus, IHP — DHP = the fric'tion...
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Science and Industry, Volume 5

1900 - 870 pages
...interrupted the friend, "then you won't get me confused. A British thermal unit is the quantity of heat required to raise the temperature of 1 pound of water 1 degree by the Fahrenheit thermometer, and it is called British because it was first adopted in Britain aa...
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