To demonstrate gas laws at physics teaching in senior middle schools. Used for proving Boyle-Mariotte's law, Charles's law, Gay-lussca's law and equation for gases.

Avogadro was a professor of chemistry at the University of Turin who did a lot of work on gas laws, understanding the number of gas particles in a given volume at a given temperature.

An energy ministry official says that all 117 laws on gas and oil on the statute books will have to be reassessed.