Air and gas
This section includes the instruments used in the searches the inflammable air as they developed him in the second halves the century XVIII.
Alexander Volta sets the eudiometer, profit to study the combustion of the gases, it plans and it realizes some applications and for first it picks up and it studies a new gas the methane.

Eudiometer of Alexander Volta.
Volta takes back the indications of Landriani and, observed as is possibile to recognize a diminution of the volume of the common air in the combustion of an inflammable air, strong of its knowledges on the electric sparks it realizes a new air inflammable audiometer.
You treats, essentially, of a vase of glass that, filled with water, he's dipped, upside-down, in a full vaschetta of water: in his first configuration it simply concerns a cylinder of closed glass to a' extremity with a cork cork, crossed by two points metallliche (electrodes) that they lean out one to the other inside the vase.

Applications of the eudiometer.
Volta, gotten the lighting of a mixture of gas in a closed vase with an electric spark, it imagines some applications of it; as the flogo-pneumatic gun, an original application that uses exploded him of it of the thundering mixture to shoot a bullet or the air inflammable oil lamp - accendilume, constituted by a vase of glass, in which the inflammable air is contained, screwed on a base of funnel-shaped copper; a second vase, sets above the first one, it contains water and it is connected with a faucet to that inferior creating a sort of water hourglass.

When the water left viena to fall the inflammable gas is inclined to go out through the orifices of the lips and hetinme can be power on in air from a spark that he is made to strike before to the orifice.