periodically
51Optical axis gratings — (OAGs) are gratings of optical axis of a birefringent material. In OAGs, the birefringence of the material is constant, while the direction of optical axis is periodically modulated in a fixed direction. In this way they are different from the… …
52Eternal return (Eliade) — The Eternal return is, according to the theories of religious historian Mircea Eliade, a belief, expressed (sometimes implicitly but often explicitly) in religious behavior, in the ability to return to the mythical age, to become contemporary… …
53Selected bibliography for Harold Pinter — This is the Selected bibliography for Harold Pinter.elected bibliography Works cited;Bibliographical resources *Baker, William, and John C. Ross, comp. Harold Pinter: A Bibliographical History . London: The British Library and New Castle, DE: Oak …
54Macedonia — /mas i doh nee euh, dohn yeuh/, n. 1. Also, Macedon /mas i don /. an ancient kingdom in the Balkan Peninsula, in S Europe: now a region in N Greece, SW Bulgaria, and the Republic of Macedonia. 2. a republic in S Europe: formerly (1945 92) a… …
55radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
56river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
57endocrine system, human — ▪ anatomy Introduction group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …
58environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
59Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
60Direct TPMS — Direct TPMS, or direct tire pressure monitoring systems (direct sensor TPMS) refers to the use of a pressure sensor directly mounted on the wheels or tires of a vehicle.[1] The pressure inside the tire is measured using a pressure transducer with …
