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2. Light fixture - Wikipedia

   en.wikipedia.org/wiki/Light_fixture

   All light fixtures have a fixture body and one or more lamps. The lamps may be in sockets for easy replacement—or, in the case of some LED fixtures, hard-wired in place. Fixtures may also have a switch to control the light, either attached to the lamp body or attached to the power cable.

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. Category:Light fixtures - Wikipedia

   en.wikipedia.org/wiki/Category:Light_fixtures

   Note: The vernacular word "lamp" is often used casually when meaning a light fixture—luminaire: including a table lamp, hanging lamp, porch lamp, desk lamp, wall lamp, floor lamp, and numerous others; and in their components’ names such as lamp shade, lamp cord, and lamp switch.

5. Lightbulb socket - Wikipedia

   en.wikipedia.org/wiki/Lightbulb_socket

   A socket with a built-in switch is far more likely to fail in normal use as the switch parts wear out. Insulation failures are usually caused by impacts or by difficulty inserting or removing a lamp. Sockets used outdoors or in damp areas often suffer from corrosion which can cause the lamp to "stick" in the socket and attempts to change a lamp ...

6. Multiway switching - Wikipedia

   en.wikipedia.org/wiki/Multiway_switching

   In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location.A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.

7. 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 ...