Boyle’s Law

This apparatus is useful to study the basics of Boyle’s Law as well as to estimate the atmospheric pressure. It becomes a simple way to approach the experimental side of physics and to introduce at sight the concepts of vacuum, pressure, density, etc. The tube filled with mercury and connected to a closed reservoir, allows to study the aeriform substance in the expansion container. By raising or lowering the other tube end, compression or rarefaction of the gas is obtained. PV = K The product of pressure and volume of a gas is constant. The variation of the height of the mercury column implies a simultaneous change of the volume occupied by the substance. *Supplied without mercury.