...through the same number of degrees, very unlike amounts of heat energy are required. The quantity of heat required to raise the temperature of a pound of water one degree will warm a pound of copper ten degrees or a pound of mercury about thirty degrees. That is, one tenth...

...of it one degree Fahrenheit, and is measured by the ratio that this quantity bears to the quantity required to raise the temperature of a pound of water one degree, — ie to the British thermal unit; thus, the specific heat of hydrogen, at a pressure of 30 inches...

...which it produces upon some substance. The unit of heat used in mechanical engineering is the heat required to raise the temperature of a pound of water one degree Fahrenheit. This is called the British thermal unit and is denoted byB.tu As this quantity Color Temp....

...The earlier estimates obtained by Joule of the number of foot-pounds of work equivalent to the heat required to raise the temperature of a pound of water one degree Fahrenheit were widely discordant, varying between 742 and 1040; but as the result of a later series...

...The earlier estimates obtained by Joule of the number of foot-pounds of work equivalent to the heat required to raise the temperature of a pound of water one degree Fahrenheit were widely discordant, varying between 742 and 1040; but as the result of a later series...

...systems are designed on the British thermal unit basis. The B. tu, as it is called, is the amount of heat required to raise the temperature of a pound of water one degree Fahrenheit. The B. tu's lost by conduction and radiation through the walls of a building and those...

...the former that has come into general use. A British Thermal Heat Unit (BTU) is the amount of heat required to raise the temperature of a pound of water one degree Fahrenheit, or one degree on the Fahrenheit scale of measuring. The British system of measuring heating...

...for 50 to 70 per cent of a leaf is water, and, as your study of physics will tell you, more heat is required to raise the temperature of a pound of water one degree than a pound of almost any other substance. So, while the rocks and the unshaded lands roundabout,...

...compose the greater part of the cover, contain from fifty to seventy per cent of water. More heat is required to raise the temperature of a pound of water one degree than for a pound of almost any other substance, and so it happens that bare soil or rock exposed to...

...=42,000 Btu By immersing a coil of resistance wire in water and measuring the number of watt-seconds required to raise the temperature of a pound of water one degree, we can determine the number of watt-seconds of electrical energy which are equivalent to one British...