he is working at physics
41Bergman , Torbern Olaf — (1735–1785) Swedish chemist Bergman, who was born in Katrineberg, Sweden, studied at the University of Uppsala, at first reading law and theology before turning to science and mathematics. He was a prolific scientist, working in physics,… …
42string theory — Physics. See under string (def. 3). * * * ▪ physics Introduction in particle physics, a theory that attempts to merge quantum mechanics with Albert Einstein (Einstein, Albert) s general theory of relativity (relativity). The name string… …
43solids, mechanics of — ▪ physics Introduction science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.… …
44amorphous solid — ▪ physics Introduction any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel. Solids and liquids (liquid) are both forms of condensed… …
45high-pressure phenomena — ▪ physics Introduction changes in physical, chemical, and structural characteristics that matter undergoes when subjected to high pressure. pressure thus serves as a versatile tool in materials research, and it is especially important in… …
46magnetohydrodynamic power generator — ▪ physics Introduction any of a class of devices that generate electric power by means of the interaction of a moving fluid (usually an ionized gas or plasma) and a magnetic field. Magnetohydrodynamic (MHD) power plants offer the potential… …
47nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
48WGDM — Working Group on Data Management (Governmental » US Government) Working Group on Data Management (Business » General) * Working Group For Dimensional Metrology (Academic & Science » Physics) * Works Group Directors Meeting (Community »… …
49DeWitt notation — Physics often deals with classical models where the dynamical variables are a collection of functions {φα}α over a d dimensional space/spacetime manifold M where α is the flavor index. This involves functionals over the φ s, functional… …
50latent heat — Physics. heat absorbed or radiated during a change of phase at constant temperature and pressure. Cf. heat of fusion, heat of vaporization. [1750 60] * * * Characteristic amount of energy absorbed or released by a substance during a change in… …
