Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 132
of water i° F. It is called the BritishThermal Unit (B. T. U.). In scientific work in all countries, the unit quantity of heat isthe amount of heat required to raise the temperature of i g. ofwater i° C. It is called the calorie. Also, if i Ib. of water cools i° F., it gives up i B. T. U. of… … FIG. 83. — Measuring heat. Method. The British Thermal Unit. In a vessel such as a saucepanor 3-qt. pail, weigh out 2 Ib. of cold water. Take the temperature ofthe water in degrees Fahrenheit. Place the vessel on the fire for a certain time, say 3 min., remove ifrfrom the fire and find the…
Physics · Home Economics
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