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2. Mogul lamp - Wikipedia

   en.wikipedia.org/wiki/Mogul_lamp

   Compact fluorescent mogul-base bulbs are also available, as are adaptors to allow medium-base bulbs to be used in mogul sockets. There are usually two three-way switches near the top of the floor lamp to operate the bulbs. One controls the three-way center bulb, and the other turns on one, two, or all three (or four) of the peripheral bulbs.

3. Arco (lamp) - Wikipedia

   en.wikipedia.org/wiki/Arco_(lamp)

   The Arco lamp is a modern floor lamp designed by brothers Pier Giacomo and Achille Castiglioni for Flos in 1962. [1] The lamp is characterized by a suspended spun aluminum pendant attached to an upright block of Carrara marble via a cantilevered arching arm made of stainless steel.

4. Knob-and-tube wiring - Wikipedia

   en.wikipedia.org/wiki/Knob-and-tube_wiring

   Knob-and-tube wiring (sometimes abbreviated K&T) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 to the 1930s.

5. Blacklight - Wikipedia

   en.wikipedia.org/wiki/Blacklight

   A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ultraviolet light and very little visible light. [ 1 ] [ 2 ] [ 3 ] One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV ...

6. Balanced-arm lamp - Wikipedia

   en.wikipedia.org/wiki/Balanced-arm_lamp

   A balanced-arm lamp has a base, a stand or body, (in most cases) two connected arms (in many cases fitted with springs), and a lamp-head. The lamp can be moved into almost any position, and the balancing device will maintain the position until moved again. The same overall mechanism can be employed in other devices with similar requirements ...

7. Anglepoise lamp - Wikipedia

   en.wikipedia.org/wiki/Anglepoise_lamp

   Close-up of the springs on an Anglepoise 90 lamp. A key feature of the Anglepoise design and patent is the placement of all springs (either three or four) near the base. [13] The design was extensively copied by other companies, usually in simplified form, and is still in use. Some derivatives use a heavy balance weight instead of the springs.