atomic hydrogen welding
91plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …
92argon — A non explosive, colorless, odorless, tasteless, inert gaseous element used in electric light bulbs, fluorescent tubes, and neon tubes, and as an inert gas shield in arc welding. Atomic symbol Ar, atomic number 18, atomic weight 39.94, melting …
93helium — A colorless, odorless, tasteless, non explosive, and inert gaseous element. It is used in arc welding and gas discharge lasers, as a component of artificial atmospheres, as a refrigerant, as a lifting gas for balloons. Tank sizes available… …
94Shaped charge — Sectioned high explosive anti tank round with the inner shaped charge visible …
95carbon — carbonless, adj. /kahr beuhn/, n. 1. Chem. a widely distributed element that forms organic compounds in combination with hydrogen, oxygen, etc., and that occurs in a pure state as diamond and graphite, and in an impure state as charcoal. Symbol:… …
96X-ray photoelectron spectroscopy — [ right|thumb|350px|Basic components of a monochromatic XPS system.] X ray photoelectron spectroscopy (XPS) is a quantitative spectroscopic technique that measures the elemental composition, empirical formula, chemical state and electronic state… …
97Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… …
98plastic — plastically, plasticly, adv. /plas tik/, n. 1. Often, plastics. any of a group of synthetic or natural organic materials that may be shaped when soft and then hardened, including many types of resins, resinoids, polymers, cellulose derivatives,… …
99oxygen — A colorless, odorless, tasteless, non explosive gas, it is the most abundant element on earth, constituting about half of the surface material. It makes up about 9/10 of water, two thirds of the human body, and 1/5 (by volume) of air. Normal… …
100carbon — /ˈkabən / (say kahbuhn) noun 1. Chemistry a widely distributed element which forms organic compounds in combination with hydrogen, oxygen, etc., and which occurs in a pure state as charcoal, graphite and diamond. Symbol: C; relative atomic mass:… …
