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Gay-Lussac's law usually refers to Joseph-Louis Gay-Lussac 's law of combining volumes of gases, discovered in and published in [1] However, it sometimes refers to the proportionality of the volume of a gas to its absolute temperature at constant pressure. Gay-Lussac's Law is a fundamental principle in thermodynamics that describes the relationship between the pressure and temperature of a gas at constant volume. Named after the French chemist Joseph Gay-Lussac, who first formulated it in the early 19th century, this law has far-reaching implications in various fields, from industrial manufacturing to everyday safety protocols. Lesson Explainer
Learn about Gay-Lussac's law of gases, which is also known as Amonton's law. Get the definition, formula, and examples. Propane tanks are widely used with barbeque grills. However, it's not fun to find out half-way through grilling that you've run out of gas. 
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Gay Lussac's is one of the Ideal gas laws that relates the pressure of the gas with its absolute temperature when its volume is kept constant. The basic statement of Gay Lussac’s Law is, the pressure produced by a gas is directly proportional to its temperature if mass and volume are kept fixed. Gay Lussac’s Law has wide application in sciences and also in our everyday life. Gay Lussac's. In other words, heating a gas in a sealed container causes its pressure to increase, while cooling a gas lowers its pressure. The reason this happens is that increasing temperature imparts thermal kinetic energy to gas molecules.
Gay Lussac's Law
The relationship between temperature and volume, at a constant number of moles and pressure, is called Charles and Gay-Lussac’s Law in honor of the two French scientists who first investigated this relationship. Charles did the original work, which was verified by Gay-Lussac. The gas laws are a set of intuitively obvious statements to most everyone in the Western world today. It's hard to believe that there was ever a time when they weren't understood.
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Gay-Lussac’s law states that the pressure exerted by an ideal gas is directly proportional to its absolute temperature, if the volume and amount of gas remain constant. Gay Lussac's is one of the Ideal gas laws that relates the pressure of the gas with its absolute temperature when its volume is kept constant. The pressure exerted by a gas is proportional to the temperature of the gas at constant volume. 14.5
This page discusses how temperature changes can mislead users about the remaining gas in propane tanks for barbeque grills, referencing Gay-Lussac's Law. This law explains that gas pressure increases . . 
Gas Laws – The Physics Hypertextbook
Gay-Lussac's law states that at constant volume, the pressure of an ideal gas is directly proportional to its absolute temperature. .
Gas Laws
The pressure, volume, and temperature of most gases can be described with simple mathematical relationships that are summarized in one ideal gas law. .