...exact equivalence, capable of easy statement, holds between tlicse heat motions, and ordinary motions. The amount of heat necessary to raise the temperature of one pound of water one Fahrenheit degree from 32°, is called the thermal unit, and this thermal unit is accompanied...

...temperature between 32° and 212°, that in general the British thermal unit may be safely taken as the amount of heat necessary to raise the temperature of one pound avoirdupois of pure water one degree Fahrenheit. Thus, we may say that to raise the temperature of...

...we must select a unit of heat, which is also termed a thermal unit. Tims wo may_ take for this unit the amount of heat necessary to raise the temperature of one pound of water from 0° C. to 1° C.; or we may take for this unit tho amount of heat necessary to melt one...

...unit chosen for tho comparison or calculation of the quantity of heat. That most commonly employed Is the amount of heat necessary to raise the temperature of one pound of water one degree centigrade. In Franco the thermal unit in the rnlorie. ThCr'mal-ly, adv. Ina thermal...

...Hence its calorific power is said to be equal to 34,462 thermal units, — the thermal unit or Calorie being the amount of heat necessary to raise the temperature of one gram of water one degree Centigrade. HYDROGEN AND OXYGEN COMPOUNDS. 37. Test. — Hydrogen may be recognized...

...Hence its calorific power is said to be equal to 34,462 thermal units, — the thermal unit or Calorie being the amount of heat necessary to raise the temperature of one gram of water one degree Centigrade. HYDROGEN AND OXYGEN COMPOUNDS. 37. Test. — Hydrogen may be recognized...

...will give out, in the process of combustion, rather more than 14,000 British units of heat, each such unit being the amount of heat necessary to raise the temperature ] of one pound of water 1° Fahrenheit of j heat. To effect this combustion, 140 cubic feet of atmospheric air, weighing 11 Ibs.,...

...condensation of that steam, reappear as available for heating. The standard unit of heat is equivalent to the amount of heat necessary to raise the temperature of one pound of water through one degree Fahrenheit at its point of greatest density. A heat unit is not to be confounded...

...necessary for the comprehension of combustion as ordinary weights and measures are for mercantile purposes. The amount of heat necessary to raise the temperature of one pound of water, at its greatest density, one degree Fahrenheit is called a heat-unit, or sometimes a thermal...

...Hence its calorific power is said to be equal to 34,462 thermal units, — the thermal unit or Calorie being the amount of heat necessary to raise the temperature of one gram of water one degree Centigrade. 37. Test. — Hydrogen may be recognized by its flame and behavior,...