million electron-volts
31silicon — /sil i keuhn, kon /, n. Chem. a nonmetallic element, having amorphous and crystalline forms, occurring in a combined state in minerals and rocks and constituting more than one fourth of the earth s crust: used in steelmaking, alloys, etc. Symbol …
32Mev — Symbol for 1 million electron volts. * * * megaelectron volts * * * megaelectron volt (one million electron volts) …
33binding energy — Physics. 1. Also called separation energy. the energy required to decompose a molecule, atom, or nucleus into its constituent particles, equal to the energy equivalent of the mass defect. 2. the energy required to separate a single particle or… …
34MeV — electr. abbr. Million Electron Volts acronym Million Electron Volts …
35food preservation — Any method by which food is protected against spoilage by oxidation, bacteria, molds, and microorganisms. Traditional methods include dehydration, smoking, salting, controlled fermentation (including pickling), and candying; certain spices have… …
36Van Allen radiation belt — ☆ Van Allen radiation belt [van al′ən ] n. 〚after James A. Van Allen (1914 ), U.S. physicist〛 1. a broad, doughnut shaped region surrounding the earth and composed of high energy electrons and protons trapped in the earth s magnetic field at… …
37pair production — Physics. the simultaneous creation of a particle and its antiparticle by a nucleus or particle in an excited state, as when a photon is absorbed. [1930 35] * * * Formation of an electron and a positron from high energy electromagnetic radiation… …
38van allen radiation belt — va]ˈnalə̇n , və] noun Usage: usually capitalized V&A Etymology: after James A. Van Allen b1914 American physicist : a belt of intense ionizing radiation that surrounds the earth in the outer atmosphere, has particles carrying energies of from… …
39nuclear fission — fission (def. 2). [1885 90] * * * Division of a heavy atomic nucleus into two fragments of roughly equal mass, accompanied by the release of a large amount of energy, the binding energy of the subatomic particles. The energy released in the… …
40Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
