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2. Light fixture - Wikipedia

   en.wikipedia.org/wiki/Light_fixture

   Light fixture - Wikipedia ... Light fixture

3. Betty lamp - Wikipedia

   en.wikipedia.org/wiki/Betty_lamp

   The Betty lamp is a lamp thought to be of German, Austrian, or Hungarian origin. It came into use in the 18th century. They were commonly made of iron or brass and were most often used in the home or workshop. These lamps burned fish oil or fat trimmings and had wicks of twisted cloth. The Betty lamp differs from earlier oil/grease lamps in ...

4. Lava lamp - Wikipedia

   en.wikipedia.org/wiki/Lava_lamp

   The underlying fluid mechanics phenomenon in lava lamps is a form of Rayleigh–Taylor instability. The bulb is normally 25 to 40 watts. It generally takes 45–60 minutes for the wax to warm up enough to form freely rising blobs, when operating the lamp at standard room temperature, and as long as 2 to 3 hours if the room is cooler.

5. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   Light switch - Wikipedia ... Light switch

6. Multiway switching - Wikipedia

   en.wikipedia.org/wiki/Multiway_switching

   Electrical installations. 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

   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.