Search results
Results from the WOW.Com Content Network
The International Electrotechnical Commission publishes IEC 60050, the International Electrotechnical Vocabulary. [2]Generally the plug is the movable connector attached to an electrically operated device's mains cable, and the socket is fixed on equipment or a building structure and connected to an energised electrical circuit.
From lamp design and manufacture, the company moved into retail and is now a full omni-channel retailer and the largest specialty lighting company in the United States. Lamps Plus opened its corporate headquarters in Chatsworth, California. Lamps Plus maintains a professional trade division, a hospitality division, a distribution center and, in ...
The pins of the secondary plug (which lacked insulation sleeves) could not be inserted into the cylindrical sockets completely, leaving a 5 mm gap between the primary and secondary plugs. The adaptors were mostly used for low power appliances (for example, connecting both a table lamp and a radio to a socket).
An electric light, lamp, or light bulb is an electrical component that produces light.It is the most common form of artificial lighting.Lamps usually have a base made of ceramic, metal, glass, or plastic which secures the lamp in the socket of a light fixture, which is often called a "lamp" as well.
An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires ...
In 1914, the Coleman Lantern, a similar pressure lamp was introduced by the US Coleman Company. [9] [10] [11] In 1915, during World War I, the Tilley company moved to Brent Street in Hendon, and began developing a kerosene pressure lamp. [12] In 1919, Tilley High-Pressure Gas Company started using kerosene as a fuel for lamps. [13]
Years ago, I owned a 16mm projector, which had an easily removeable cover over the lamp. Just inside the cover was a large resistor, the top (and accesible) connection of which was at live mains (the resistor dropped the supply to power the 120 volt projector bulb).
In 1980, the annual operating cost for the average incandescent lamp was $280; for mercury vapor lamps, it was $128; and for low-pressure sodium vapor lamps, it was $60 a year. [1] Meanwhile, high-pressure sodium vapor lamps cost only $44 a year to operate, with a standard life expectancy of 15,000 hours, which also helped to lower labor and ...