Gay Lussacs Law

Gay-Lussac's Law, in Heat, is that the proportional increase in the volume of a gas under constant pressure from its volume at 0° C. is a constant multiple of its temperature. This multiple is known as the coefficient of expansion of the gas for constant pressure, and it is found by experiment to be about -ji-j or -00367. The diminution in volume when cooled below 0° C. follows the same law for some time; if the law be supposed to hold good down to a temperature of - 273° C, the volume must be regarded as zero.