Fluorescent Lamps
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Fluorescent Lamps
Fluorescent lamps are a type of gas-discharge lamp that produces visible light by the excitation of mercury vapor atoms in a sealed glass tube. They were first developed in the early 20th century and have since become a popular source of lighting in residential, commercial, and industrial settings. The basic design of a fluorescent lamp consists of a long, narrow glass tube that is coated on the inside with a phosphorescent material. The tube is filled with a low-pressure mixture of mercury vapor and an inert gas, such as argon or neon. When an electric current is passed through the gas, it ionizes the mercury vapor, causing it to emit ultraviolet (UV) light. The UV light strikes the phosphorescent coating on the inside of the tube, causing it to fluoresce and emit visible light. Fluorescent lamps are known for their high efficiency and long life compared to traditional incandescent bulbs. They can produce up to four times as much light per watt of energy consumed, and they can last up to 10 times longer. They are also available in a wide range of sizes and shapes, making them suitable for a variety of applications. However, fluorescent lamps do have some drawbacks. They can produce a harsh, flickering light that can be unpleasant for some people, and they contain small amounts of toxic mercury, which can be harmful if the lamp is broken or improperly disposed of. Despite these drawbacks, fluorescent lamps remain a popular choice for lighting in many settings. They are commonly used in offices, schools, and other commercial buildings, as well as in homes. They are also used in specialized applications, such as in aquariums and horticulture, where their high efficiency and spectral characteristics make them well-suited for growing plants and aquatic organisms.
gas-discharge lamp, mercury vapor, phosphorescent, efficiency, long life
CITATION : "Brandon Murphy. 'Fluorescent Lamps.' Design+Encyclopedia. https://design-encyclopedia.com/define/fluorescent-lamps?E=412754 (Accessed on October 14, 2026)"
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