mercury vapor
111Color rendering index — Emitted light spectrum determines the color rendering index of the lamp. Color render …
112Sulfur lamp — The sulfur lamp (also sulphur lamp) is a highly efficient full spectrum electrodeless lighting system whose light is generated by sulfur plasma that has been excited by microwave radiation. The technology was developed in the early 1990s, but,… …
113Electrical ballast — Choke ballast (inductor) used in older lighting. This example is from a tanning bed. Requires a lamp starter (below) and capacitor …
114Centennial Light — The Centennial Light hanging in the Livermore, California Firehouse The Centennial Light is the world s longest lasting light bulb. It is at 4550 East Avenue, Livermore, California, and maintained by the Livermore Pleasanton Fire Department.[1]… …
115William Le Roy Emmet — (* 10. Juli 1858 in New Rochelle, New York; † 26. September 1941) war ein US amerikanischer Elektrotechniker, der große Umformer entwickelte. Nachdem er 1881 an der U.S. Naval Academy graduiert hatte, diente er bis 1883 in der Navy auf der… …
116fluorescent lamp — a tubular electric discharge lamp in which light is produced by the fluorescence of phosphors coating the inside of the tube. [1895 1900] * * * Type of electric discharge lamp consisting of a glass tube filled with a mixture of argon and mercury… …
117lamp — Illuminating device; source of light. SEE ALSO: light. annealing l. an alcohol l. with a soot free flame used in dentistry to drive off the protective NH3 gas coating from the surface of cohesive gold foil. Edridge Green l. a lantern used to …
118Architecture of the night — De Volharding Building, The Hague, 1928 by Jan Buijs, photographed in 1930 …
119Kromayer lamp — Kro·may·er lamp krō mī ər .lamp n a small water cooled mercury vapor lamp used in ultraviolet therapy Kromayer Ernst L. F. (1862 1933) German dermatologist. Kromayer introduced his mercury vapor lamp around 1911. * * * Kro·may·er lamp (kroґmi… …
120Fluorescent lamp — A glass enclosure in which light is produced when electricity is passed through mercury vapor inside the enclosure. The electricity creates a radiation discharge that strikes a coating on the inside surface of the enclosure, causing the coating …
