Henry Cavendish prefiguring thermodynamics. Theoretical physicist Dietrich Belitz concluded that in this work Cavendish "got the nature of heat essentially right." As Cavendish performed his famous density of the Earth experiment in an outbuilding in the garden of his Clapham Common estate, his neighbours would point out the building and tell their children that it was where the world was weighed. In honour of Henry Cavendish's achievements and due to an endowment granted by Henry's relative William Cavendish, 7th Duke of Devonshire, the University of Cambridge's physics laboratory was named the Cavendish Laboratory by James Clerk Maxwell, the first Cavendish Professor of
Department of Physics, Quaid-e-Azam University President Ayub Khan, to make the proposed university a research institution. Siddiqui convinced the chairman of PAEC, dr IH Usmani, to send all the theoreticians in PAEC to the Institute of Physics at the University of Islamabad to form a theoretical physics group. Department of Physics, Quaid-e-Azam University The Department of Physics, Quaid-e-Azam University () (founded as the Institute of Physics, QAU), is an academic and research department of the Quaid-e-Azam University (Qau), Pakistan. It is also referred to as the Institute of Theoretical Physics. Established in 1966 with efforts led by Abdus Salam, the institute was located in Rawalpindi,