Boyle's law (sometimes referred to as the Boyle-Mariotte law) is one of the
gas laws and basis of derivation for the
ideal gas law, which describes the relationship between the product
pressure and
volume within a
closed system as constant when temperature remains at a fixed measure; both entities remain inversely proportional. The law was named for
chemist and
physicist,
Robert Boyle who published the original law in 1662. The law itself can be defined succinctly as: History Boyle's Law is named after the Irish natural philosopher
Robert Boyle (
Lismore,
County Waterford, 1627-1691) who was the first to publish it in 1662. The relationship between pressure and volume was brought to the attention of Boyle by two friends and amateur scientists, Richard Towneley and
Henry Power, who discovered it. Boyle confirmed their discovery through experiments and published the results. According to
Robert Gunther and other authorities, Boyle's assistant
Robert Hooke, who built the experimental apparatus, may well have helped to quantify the law; Hooke was accounted a more able mathematician than Boyle. Hooke also developed the improved vacuum pumps necessary for the experiments. The French physicist
Edme Mariotte (1620-1684) discovered the same law independently of Boyle in 1676, so this law may be referred to as Mariotte's or the Mariotte-Boyle law.
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The pressure of a
ideal gas is inversely proportional to its volume, if the temperature and amount of gas is held constant. Doubling gas pressure halves gas volume, if temperature and amount of gas don't change. If the initial pressure and volume are P1 and V1 and the final pressure and volume are P2V2, then P1V1 = P2V2 at fixed temperature and gas amount.