fluorescent lamp
Học thuậtThân thiện
Definition
Noun: A fluorescent lamp is a type of electric light that produces visible light using fluorescence. It consists of a long glass tube containing a small amount of mercury vapor and an inert gas (like argon). The inside of the tube is coated with a phosphor powder. When electricity passes through the vapor, it emits ultraviolet (UV) light. This UV light then causes the phosphor coating to glow, or fluoresce, producing visible light.
Usage
A fluorescent lamp is a common, energy-efficient source of lighting for indoor spaces. - It is typically used in offices, schools, supermarkets, and other commercial or institutional buildings. - It is often installed in ceiling fixtures or as long, tubular bulbs.
Examples
Advanced Usage
- Compact Fluorescent Lamp (CFL): A common variant where the tube is folded or twisted into a compact shape to fit into standard light bulb sockets, serving as a direct replacement for incandescent bulbs.
- She screwed the compact fluorescent lamp into the desk lamp.
Variants and Related Words
- Fluorescent lighting (n): The system or overall effect of using fluorescent lamps.
- The store's bright fluorescent lighting made everything look clear.
- Fluorescent tube (n): Another term for the standard, long tubular form of a fluorescent lamp.
- He needed to change the fluorescent tube in the kitchen.
Synonyms
- Fluorescent light
- Fluorescent tube
- Strip light (common in British English)
Antonyms
- Incandescent lamp/bulb: A lamp that produces light by heating a filament until it glows.
- LED lamp: A lamp that uses light-emitting diodes (LEDs) as the source of illumination.
Noun
- lamp consisting of a tube coated on the inside with a fluorescent material; mercury vapor in the tube emits ultraviolet radiation that is converted to visible radiation by the fluorescent material