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The May 25, 1892, edition of Crockery & Glass Journal mentioned strong demand for the company's night lamps, and mentioned a new Santa Claus lamp that is "neat and novel". [59] In the November 3, 1892 edition of the same journal the company's novelties were described as having strong demand, and the Santa Claus lamp was an "emphatic hit". [ 60 ]
An example of a banker's lamp. The banker's lamp is a style of electric desk or table lamp often characterized by a brass stand, green glass lamp shade, and pull-chain switch. Such a lamp was first patented in the United States under the Emeralite brand name. Banker's lamps have become iconic, often used in libraries and offices in films and TV ...
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]
A 50-hour-life projection bulb, for instance, is designed to operate only 50 °C (122 °F) below that melting point. Such a lamp may achieve up to 22 lumens per watt, compared with 17.5 for a 750-hour general service lamp. [76] Lamps of the same power rating but designed for different voltages have different luminous efficacy.
A plasma ball with filaments extending between the inner and outer spheres. A plasma ball, plasma globe, or plasma lamp is a clear glass container filled with noble gases, usually a mixture of neon, krypton, and xenon, that has a high-voltage electrode in the center of the container.
Modern sets typically have a long and thin wedge that extends all the way down to the back end of the socket, separating the two electrical conductors and contacts and preventing water between them when used outdoors. Many sets have an optional "locking" tab on the edge of the base that snaps onto or into the side of the socket, to prevent ...