filament lamp definition
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- (ĭn′kən-dĕs′ənt) A lamp that produces light by heating up a filament of wire inside a bulb with an electric current. Because the filament, usually made of tungsten, would burn from the heat, the bulb is filled with a nonreactive gas, such as argon, which protects the wire from burning. Compare fluorescent lamp.
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Light and ColorIncandescent and Halogen Technology A tungsten wire filament is placed inside a glass bulb, an electric current is passed through the filament, and resistance in the filament causes it to heat and “incandesce” or glow. Most modern lamps feature a coiled filament that improves efficacy and reduces heat loss.
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What is a Salt Lamp? Top 10 facts about the world. A salt lamp is simply a chunk of mined salt that has been hollowed out to allow room for a lightbulb or tiny candle. The light glows through the medium of the salt crystal, which can range in color from a dark salmon pink to a pale orange. Salt crystals for salt lamps are mined in Russia and central Europe as well as in the Himalayas. Salt lamps make attractive accent lights.
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About Fluorescence Fluorescence is a process distinct from incandescence, which refers to emission of light from an object heated to such high temperatures that it glows. The glowing filament in a conventional light bulb, and glowing embers in a fireplace, are examples of incandescence.
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- How it Works. The halogen lamp has a tungsten filament similar to the standard incandescent lamp, however the lamp is much smaller for the same wattage, and contains a halogen gas in the bulb. The halogen is important in that is stops the blackening and slows the thinning of the tungsten filament.
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- Light fixture. A light fixture (US English), light fitting (UK English), or luminaire is an electrical device used to create artificial light by use of an electric lamp. All light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement.
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Microfilament noun, plural: microfilaments A thin, helical, single-stranded filament of the cytoskeleton found in the cytoplasm of eukaryotic cells, composed of actin subunits, and functions primarily in maintaining the structural integrity of a cell and cell movements.
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Screen backlight lamp A backlight lamp (also know as backlight bulb, screen backlight, CCFL tube or bulb) is the main and only source of light in a laptop LCD screen. A typical laptop LCD screen has only one backlight lamp installed.
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Oil lamp An oil lamp is an object used to produce light continuously for a period of time using an oil-based fuel source. The use of oil lamps began thousands of years ago and is continued to this day, although not commonly anymore.
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- Define filament. filament synonyms, filament pronunciation, filament translation, English dictionary definition of filament. n. 1. A fine or very thin thread or fiber: filaments of cloth; filaments of flax. 2. A slender or threadlike structure or part, especially: a.
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Hypertensive Retinopathy Hypertensive retinopathy is retinal vascular damage caused by hypertension. Signs usually develop late in the disease. Funduscopic examination shows arteriolar constriction, arteriovenous nicking, vascular wall changes, flame-shaped hemorrhages, cotton-wool spots, yellow hard exudates, and optic disk edema.
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Kerosene lamp Kerosene lamp. A kerosene lamp (usually called a paraffin lamp in some countries) is a type of lighting device that uses kerosene (paraffin) as a fuel. Kerosene lamps have a wick or mantle as light source, protected by a glass chimney or globe; lamps may be used on a table, or hand-held lanterns may be used for portable lighting.
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Electrical filament In a light bulb there is a small thin wire with two bigger wires holding it up. This wire is called a filament. The filament is the part of the light bulb that produces light. Filaments in incandescent light bulbs are made of tungsten. When electric current goes through the filament, the filament glows. It may also be known as the electron emitting element in a vacuum tube.
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Incandescent light bulb Incandescent light bulbs consist of an air-tight glass enclosure (the envelope, or bulb) with a filament of tungsten wire inside the bulb, through which an electric current is passed. Contact wires and a base with two (or more) conductors provide electrical connections to the filament.
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filament (in a light bulb or other incandescent lamp) the threadlike conductor, often of tungsten, in the bulb that is heated to incandescence by the passage of current. 7. Electronics. the heating element (sometimes also acting as a cathode) of a vacuum tube, resembling the filament in an incandescent bulb.
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- Lamps with a CCT rating below3200 K usually are considered “warm” sourc-es, whereas those with a CCT above 4000 Kusually are considered “cool” in appearance.efficacy The ratio of light output (lumens)of a lamp to input power (watts).halophosphates The class of phosphorscommonly used in fluorescent lamps. T8 lamp (on the right inthe figure below) is eight-eighths of an inch,or one inch (2.54 cm), in diameter. Both T12and T8 lamps use the medium bi-pin base,which allows T8 lamps to fit into the same luminaires as T12 lamps of the same length.
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- dictionary definitions for Twitter language,Sms Speak,txt msgs, txt messages, texting, Text sms phrases, SMS lingo, Tweat, Txt messaging language ikraar has the following 2 definition(s) + add your definition promise promise is used in India accept love accept love is used in Arabic Insurance Urdu
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Lampshade Glossary of Terms Fitter - The metal structure that attaches the shade to the lamp base. The most common type is the Spider Fitter which resembles a spoked wheel and connects to a harp with a finial. A Clip-On Fitter features metal loops allowing the shade to attach on top of the bulb.
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Energy-Saving Lamps & Health A fluorescent lamp generates light from collisions in a hot gas (‘plasma’) of free accelerated electrons with atoms– typically mercury – in which electrons are bumped up to higher energy levels and then fall back while emitting at two UV emission lines (254 nm and 185 nm).
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- A complete lighting unit consisting of a lamp (or lamps), ballast (or ballasts) as required together with the parts designed to distribute the light, position and protect the lamps and connect them to the power supply.
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- Ceiling light fixtures. A light fixture (US English), light fitting (UK English), or luminaire is an electrical device used to create artificial light by use of an electric lamp. All light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement.
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Lamps Components of a luminaire, such as reflectors and diffusers, absorb some of the light from the lamps(s). A highly efficient luminaire emits most of the light that the lamp(s) emits. Lux (LX) - The metric unit of measure for illuminance of a surface. One lux is equal to one lumen per square meter.
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- One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV, so the lamp has a dim violet glow when operating. Blacklight lamps which have this filter have a lighting industry designation that includes the letters BLB.
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- The lamp contains blobs of coloured wax inside a glass vessel filled with clear or translucent liquid; the wax rises and falls as its density changes due to heating from an incandescent light bulb underneath the vessel. The appearance of the wax is suggestive of pāhoehoe lava, hence the name.
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LED lamp An LED lamp is an electric light or light bulb for use in lighting fixtures that produces light using light-emitting diodes. LED lamps have a lifespan and electrical efficiency which are several times greater than incandescent lamps, and are significantly more efficient than most fluorescent lamps, with some chips able to emit more than 300 lumens per watt. The LED lamp market is projected to grow by more than twelve-fold over the next decade, from $2 billion in the beginning of 2014 to $25 bill
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Sodium-vapor lamp A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light. There are two varieties of such lamps: low pressure and high pressure.