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2. Halogen lamp - Wikipedia

   en.wikipedia.org/wiki/Halogen_lamp

   A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine. The combination of the halogen gas and the tungsten ...

3. Mogul lamp - Wikipedia

   en.wikipedia.org/wiki/Mogul_lamp

   Mogul lamp. A mogul lamp or six way lamp is a floor lamp which has a large center light bulb surrounded by three (or four) smaller bulbs that may be candelabra -style or standard medium-base bulbs, each mounted base-down. This entire setting is typically covered, at least partially, by a large cylindrical (or bell-shaped) fabric shade which is ...

4. Torchère - Wikipedia

   en.wikipedia.org/wiki/Torchère

   Today, torchère lamps use fluorescent, halogen, or LED light bulbs. Adjusting the pulse-width modulation in the electronic ballast can allow the fluorescent torchères to be dimmed. Halogen torchères usually came with a simple switch. Some more expensive models have a TRIAC dimmer circuit built into the stem. Early lamps with 300W bulbs ...

5. Luminous efficacy - Wikipedia

   en.wikipedia.org/wiki/Luminous_efficacy

   Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt in the International System of Units (SI). Depending on context, the power can be either the radiant flux of the source's output, or it can be the total power (electric power, chemical energy ...

6. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   The EU confirmed that there was no reason to delay the ban on mains voltage directional halogen lamps, as all four of the criteria had been sufficiently met. [67] The directive EC 1194/2012 relates to mains voltage directional halogen lamps; many common halogen reflector lamps such as D-rated GU10 bulbs are affected. [68]

7. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.