THEORETICAL RESEARCHES ON THE EFFECTS OF GUNPOWDER AND OTHER EXPLOSIVES.
Properties of Gases.
1. Mariotte's and Gay-Lussac's Laws.—Gases and superheated vapors tend towards a limiting state, called that of a perfect gas, which is characterized by the two following laws:
1. Mariotte's Law.—The pressures of the same mass of gas are inversely proportional to the volumes.
2. Gay-Lussac's Law.—All gases have the same coefficient of dilatation under constant pressure, and this coefficient is independent of the pressure.
This constant, which is called the specific volume, represents then the volume of unit of weight of the gas at zero temperature, and under the normal pressure ; if the gas under consideration can reach these conditions of pressure and temperature without change of state and without ceasing to satisfy Mariotte's and Gay-Lussac's laws, its numerical value is the reciprocal of the specific weight, or weight of the unit of volume at zero and under the pressure p0.