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Nellieger
I am studying psychology
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PHYSICS
Lighting Technology
Fluorescent Lamp
Mercury vapor’s invisible glow revolutionized energy-efficient lighting decades before LEDs.
5 days ago
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What is the primary mechanism by which fluorescent lamps produce visible light?
Electric current heats a filament that emits visible light directly.
Electricity directly excites the phosphor coating to emit light without UV involvement.
Ultraviolet light from excited mercury vapor causes a phosphor coating to fluoresce.
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Nellieger
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PHYSICS
Lighting Technology
Fluorescent Lamp
Mercury vapor inside fluorescent lamps creates invisible ultraviolet light that powers their glow
9 days ago
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What is the primary mechanism by which fluorescent lamps produce visible light more efficiently than incandescent bulbs?
Heating a filament until it glows produces visible light more efficiently.
Ultraviolet light excites a phosphor coating inside the lamp, producing visible fluorescence.
Fluorescent lamps generate visible light directly from mercury vapor without any coating.
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Stevek113
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PHYSICS
Lighting Technology
Fluorescent Lamp
Fluorescent lamps convert invisible ultraviolet light into visible glow using phosphor coatings
5 Feb 2026
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What is the primary mechanism by which fluorescent lamps produce visible light?
Electric current heats a filament that glows to produce visible light.
Electric current directly excites phosphor particles to emit visible light without ultraviolet emission.
Electric current excites mercury vapor to emit ultraviolet light, which then causes a phosphor coating to fluoresce visible light.
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Nellieger
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PHYSICS
Optics and Lighting
Fluorescent Lamp
Fluorescent lamps use mercury vapor and phosphor coatings to efficiently produce visible light
1 Feb 2026
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What role does the phosphor coating inside a fluorescent lamp play in producing visible light?
It fluoresces by converting ultraviolet light emitted by mercury vapor into visible light.
It generates ultraviolet light directly when electric current passes through it.
It acts as a conductor to maintain the electric current inside the lamp.
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Stevek113
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PHYSICS
Lighting Technology
Fluorescent Lamp
Fluorescent lamps use mercury vapor and phosphor coatings to efficiently produce visible light
21 Jan 2026
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What role does the phosphor coating inside a fluorescent lamp play in producing visible light?
It converts ultraviolet light emitted by excited mercury vapor into visible light through fluorescence.
It emits ultraviolet light directly when excited by the electric current.
It generates heat that causes the gas inside the lamp to glow visibly.
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