Gas laws

van der Waals showed that gases follow certain laws relating volume, pressure, and temperature only if the molecules have a small volume and a small attraction between them. His demonstration refined the earlier understanding established by Boyle and others.
 Johannes Diderik van der Waals Netherlands 1873 Gas laws

van der Waals showed that gases follow certain laws relating volume, pressure, and temperature only if the molecules have a small volume and a small attraction between them. His demonstration refined the earlier understanding established by Boyle and others.