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2. Banker's lamp - Wikipedia

   en.wikipedia.org/wiki/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.

3. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord. Manually operated on/off switches may be substituted by dimmer switches that allow controlling the brightness of lamps as well as turning them on or off, time-controlled switches, occupancy-sensing switches, and remotely controlled ...

4. Gooseneck lamp - Wikipedia

   en.wikipedia.org/wiki/Gooseneck_lamp

   A gooseneck lamp. A gooseneck lamp is a type of light fixture in which a lamp or lightbulb is attached to a flexible, adjustable shaft known as a "gooseneck" to allow the user to position the light source without moving the fixture or item to be illuminated. [1]

5. Balanced-arm lamp - Wikipedia

   en.wikipedia.org/wiki/Balanced-arm_lamp

   The lamp designed by Edouard-Wilfrid Buquet in 1927 works in this way. The lamp is in the collection of the Museum of Modern Art. The two axes have a different angle, and this has some advantages. Lamp-cap x fore-Arm = Arm x Small weight (Lamp-cap + Small weight) x upper-arm = Arm x Big weight.

6. 3-way lamp - Wikipedia

   en.wikipedia.org/wiki/3-way_lamp

   A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...

7. Luminous intensity - Wikipedia

   en.wikipedia.org/wiki/Luminous_intensity

   Germany, Austria, and Scandinavia used the Hefnerkerze, a unit based on the output of a Hefner lamp. [4] In 1881, Jules Violle proposed the Violle as a unit of luminous intensity, and it was notable as the first unit of light intensity that did not depend on the properties of a particular lamp. All of these units were superseded by the ...