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21Superconducting magnetic energy storage — (SMES) systems store energy in the magnetic field created by the flow of direct current in a superconducting coil which has been cryogenically cooled to a temperature below its superconducting critical temperature. A typical SMES system includes… …
22Coaxial cable — RG 59 flexible coaxial cable composed of: A: outer plastic sheath B: woven copper shield C: inner dielectric insulator D: copper core Coaxial cable, or coax, has an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by …
23Non-line-of-sight propagation — Non line of sight (NLOS) or near line of sight is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the innermost Fresnel zone. Many types of radio transmissions depend, to… …
24Conducting — For other uses, see Conduct (disambiguation) and Conductor (disambiguation). A conductor conducting at a ceremony …
25Copper wire and cable — Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.[1][2] The invention of the telephone in 1876 proved to be another early boon for copper wire.[3] Today, despite competition from… …
26Joan Sutherland — in 1975 Dame Joan Alston Sutherland, OM, AC, DBE (7 November 1926 – 10 October 2010)[1] was an Australian dramatic coloratura soprano noted for her contribution to the renaissance of the …
27physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
28Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …
29inductance — /in duk teuhns/, n. Elect. 1. that property of a circuit by which a change in current induces, by electromagnetic induction, an electromotive force. Symbol: L Cf. inductive coupling, mutual inductance, self inductance. 2. inductor (def. 1). [1885 …
30Electromigration — is the transport of material caused by the gradual movement of the ions in a conductor due to the momentum transfer between conducting electrons and diffusing metal atoms. The effect is important in applications where high direct current… …
