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# Gay Lussac’s Law Calculator Online:

Use our Gay Lussac’s Law Calculator Online.

# Gay Lussac’s Law Equation / formula:

[box fontsize=”16″][list icon=”momizat-icon-pencil2″ ] P1 / T1 = P2 / T2., P1 T2 = P2 T2[/list] [/box]

# Gay Lussac’s Law Definition:

Definition of Gay Lussac’s Law:

This law is often referred to as Amontons’s law of pressure–temperature after Guillaume Amontons, who, between 1700 and 1702, discovered the relationship between the pressure and temperature of a fixed mass of gas’ kept at a constant volume Amontons discovered this while building an “air thermometer”.

The pressure of a gas of fixed mass and fixed volume is directly proportional to the gas’s absolute temperature.

If a gas’s temperature increases, then so does its pressure if the mass and volume of the gas are held constant. The law has a particularly simple mathematical form if the temperature is measured on an absolute scale, such as in kelvins.

Gay-Lussac’s law can refer to several discoveries made by French chemist Joseph Louis Gay-Lussac (1778–1850) and other scientists in the late 18th and early 19th centuries pertaining to thermal expansion of gasses and the relationship between temperature, volume, and pressure.