mercury-arc lamp
91Museum Boerhaave — Established 1931 [1] Location Lange Sint Agnietenstraat 10 Leiden, Netherlands …
92finsen light — ˈfin(t)sən , nzən noun Usage: usually capitalized F Etymology: after Niels R. Finsen died 1904 Danish physician : a mixture of blue, violet, and near ultraviolet light that is produced by a lamp using a high temperature carbon arc or a mercury… …
93Coherence (physics) — In physics, coherence is a property of waves that enables stationary (i.e. temporally and spatially constant) interference. More generally, coherence describes all properties of the correlation between physical quantities of a wave. When… …
94Hydroelectricity — The Gordon Dam in Tasmania is a large hydro facility, with an installed capacity of 430 MW …
95Power engineering — Power engineering, also called power systems engineering, is a subfield of electrical engineering that deals with the generation, transmission and distribution of electric power as well as the electrical devices connected to such systems… …
96printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
97Jean-Bertrand-Leon Foucault — Jean Bertrand Léon Foucault † Catholic Encyclopedia ► Jean Bertrand Léon Foucault A physicist and mechanician, b. at Paris, 19 Sept., 1819; d. there 11 Feb., 1868. He received his early schooling at home and showed his mechanical… …
98Oscilloscope history — This article discusses the history and gradual development of the Oscilloscope. Contents 1 Hand drawn oscillograms 2 Automatic paper drawn oscillograph 3 Photographic oscillograph 4 …
99Headlamp — Headlight redirects here. For other uses, see Headlight (disambiguation). High Beams redirects here. For the urban legend also known by that name, see Killer in the backseat. A motor scooter s front with an impractical number and variety of… …
100Neon lighting — Times Square, New York City, has been famous for elaborate neon lighting displays since th …
