mercury discharge lamp
101Parabolic aluminized reflector light — A Parabolic Aluminized Reflector luminaire 20 PAR cans A parabolic aluminized refle …
102Luminous efficacy — is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. Depending on context, the power can be either the radiant flux of the source s output, or it can be the total electric power consumed by… …
103Crackle tube — A small battery powered Luminglas device, turned on. A small battery powered Luminglas device, turned …
104Electric arc — An electric arc is an electrical breakdown of a gas which produces an ongoing plasma discharge, resulting from a current flowing through normally nonconductive media such as air. A synonym is arc discharge. The phenomenon was first described by… …
105Noble gas — Group 18 Period 1 2 He 2 …
106photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
107Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …
108Lincoln Town Car — Infobox Automobile name=Lincoln Town Car manufacturer=Ford Motor Company production=1981 present predecessor=Lincoln Continental successor= class=Full size luxury car platform=Ford Panther platform layout=FR layoutThe Lincoln Town Car is a full… …
109Gas lighting — For other uses, see Gaslight (disambiguation). Gas lighting is production of artificial light from combustion of a gaseous fuel, including hydrogen, methane, carbon monoxide, propane, butane, acetylene, ethylene, or natural gas. Before… …
110Diya (light) — A basic earthen oil diya used for Divali A Diya, divaa, deepam, or deepak is an oil lamp usually made from clay, with a cotton wick dipped in ghee or vegetable oils. Clay diyas are often used temporarily as lighting for special occasions, while… …
