Be+incandescent
91Heinrich Göbel — Heinrich Göbel, Fotografie aus New York Heinrich Göbel (* 20. April 1818 in Springe; † 4. Dezember 1893 in New York; nach 1849 auch als Henry Goebel bekannt) war ein Feinmechaniker deutscher Herkunft, der 1865 US Staatsbürger wurde. Heinrich… …
92Henry Goebel — Heinrich Göbel, Fotografie aus New York Heinrich Göbel (* 20. April 1818 in Springe; † 4. Dezember 1893 in New York; nach 1849 auch als Henry Goebel bekannt) war ein Feinmechaniker deutscher Herkunft, der 1865 US Staatsbürger wurde. Heinrich… …
93Edison, Thomas Alva — born Feb. 11, 1847, Milan, Ohio, U.S. died Oct. 18, 1931, West Orange, N.J. U.S. inventor. He had very little formal schooling. He set up a laboratory in his father s basement at age 10; at 12 he was earning money selling newspapers and candy on… …
94Halogen lamp — A halogen lamp is an incandescent lamp in which a tungsten filament is sealed into a compact transparent envelope filled with an inert gas, plus a small amount of halogen such as iodine or bromine. The halogen cycle increases the lifetime of the… …
95stage design — Aesthetic composition of a dramatic production as created by lighting, scenery, costumes, and sound. While elements such as painted screens and wheeled platforms were used in the Greek theatre of the 4th century BC, most innovations in stage… …
96Color temperature — The CIE 1931 x,y chromaticity space, also showing the chromaticities of black body light sources of various temperatures (Planckian locus), and lines of constant correlated color temperature. Color temperature is a characteristic of visible light …
97Reginald Fessenden — Infobox Celebrity name = Reginald Fessenden caption = The Father of Radio Broadcasting birth date = birth date|1866|10|6|mf=y birth place = East Bolton, Quebec, Canada death date = death date and age|1932|7|22|1866|10|6|mf=y death place = Bermuda …
98Flashlight — A flashlight (also called an electric torch or torch) is a portable electric spotlight which emits light from a small incandescent lightbulb, or from one or more light emitting diodes (LEDs). The light source is mounted in a housing which… …
99Exit sign — An exit sign is a device in a public facility (such as a building, airplane or boat) that displays where the emergency exit is. Most exit signs around the world are in pictogram form, with or without text supplement. There has been a shift… …
100Grow light — A grow light is an electric lamp designed to promote plant growth by emitting an electromagnetic spectrum appropriate for photosynthesis. The emitted light spectrum is similar to that from the sun, allowing indoor growth with outdoor conditions.… …
