Gas laws 1662 Robert Boyle studied the relationship between volume and pressure of a gas of fixed amount at constant temperature. He observed that volume of a given mass of a gas is inversely proportional to its pressure at a constant temperature. Boyle's law, published in 1662, states that, at constant temperature, the product of the pressure and volume of a given mass of an ideal gas in a closed system is always constant. It can be verified experimentally using a pressure gauge and a variable volume container. It can also be derived from the kinetic theory of gases: if a container,
Shay Given Shay Given Séamus John James Given (born 20 April 1976) is an Irish former professional footballer who played as a goalkeeper. He is currently the goalkeeper coach at Derby County. Having surpassed the total of 100 caps required for membership, he is part of the FIFA Century Club. Given gained his first international cap in 1996 and played in goal during every match for his country during the 2002 FIFA World Cup campaign, helping them reach the knockout stage. He was later on the pitch in Paris when the Republic of Ireland were knocked out of the play-offs for a