What is tungsten lighting?

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Tungsten lighting is a term used by photographers to distinguish from fluorescent lighting or strobe lighting. Tungsten is a type of incandescent lighting using a bulb with a filament made of the metal tungsten, as opposed to, say, carbon or platinum. Unless you have switched to compact fluorescents, most of the lighting in your home is tungsten. In still photography, tungsten lighting gave studio photographers greater flexibility than the classic north sky light. Tungsten lights reigned supreme for many years in commercial studios until the introduction of strobes (or speed lights) and some workers still prefer tungsten for its controllability (what you see is what you get). For television and cinematography tungsten is essential.

Tungsten lamps specifically for photographic purposes are made to very tight tolerances since most photography or cinematography today is done in color. For photography, tungsten lamps are produced in two types, having very specific "color temperatures:" type B lamps, the most common, have a color temperature of 3200 degrees Kelvin (3200°K); type A lamps had a color temperature of 3400°K and were matched to Kodachrome Type A (ASA/ISO 40). This material is now discontinued and so far as I know there are no other Type A still stocks on the market.

Without getting too tediously technical we should try briefly to explain "color temperature:" The higher the color temperature, the bluer the light. The lower the color temperature, the more yellow to red the light. Noon daylight (sun shining, no cloud cover) in the area of the globe between the tropics is considered for practical purposes to have a color temperature of 5000 degrees Kelvin (5000°K). "Daylight" color films, or your default setting on your digital camera, are balanced for ±5000°K. Electronic flashes ("strobes" or "speed lights" or the little strobe on your camera) have a nominal color temperature equal to noon daylight. All other light sources have different color temperatures and theoretically require some sort of compensation to render "true" color, either by filtering the film or the light or by changing the film or settings on the camera. If you are using studio quality tungsten lighting, you should also use a type-B incandescent balanced film, or set your digital camera for either AUTO or incandescent. In practice, plain household tungsten lighting (color temperature around 2800°K) will yield a perfectly acceptable photograph with a type-B film or with your digital camera set on auto or incandescent.

Most 3200°K studio lamps used today are tungsten halogen. Halogen lamps have quartz envelopes and are filled with a halogen gas such as iodine or bromine. The gas combines with the evaporated tungsten from the filament during use and helps some of the tungsten plate back onto the filament when it cools, lengthening the life of the lamp. The quartz envelope does not darken over the life of the lamp, so the color temperature does not significantly change, nor does its brilliance.
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What is Tungsten?

Tungsten (pronounced /tʌŋstən/), also known as wolfram (/wlfrəm/), is a chemical element with thechemical symbol W and atomic number 74. Tungsten is one of theheaviest materials after gold, for the density of tungsten is 19.25 g•cm 3 (near r.t.). Tungsten is one of the Nonfe (MORE)

What are the uses for tungsten?

Tungsten has an unusually high melting point, and therefore has been used for many decades to make filaments in incandescent light bulbs.

What are facts about tungsten?

-Highest melting point of any metal -It's hypo-allergenic -Toxic to life, interferes with copper metabolism in the body

When was tungsten found?

Tungsten was found in the year 1783 by Fausto and Juan Jose(the E in Jose should have that little mark above it but I don't know how to do that). It was named Tungsten because in Swedish(an awsome language that I want to learn) the two words TUNG and STEN mean "heavy stone".

The symbol of Tungsten?

Tungsten symbol is "W" it is a metal and on the periodic Table which the atomic number is 74 I hoped this helped

Is tungsten dangerous?

Tungsten is a heavy metal and requires certain safety precautionswhen handling. It is considered an irritant to the eyes, skin, andlungs. Though it is considered less dangerous than other heavymetals, it could pose a great health hazard when interacting withother compounds. Tungsten toxicity in huma (MORE)

Can you engrave Tungsten?

Tungsten can be engraved. Hardness is measured on the MOHs hardness scale. This is a scale from 1 - 10 where 1 is the softest and 10 is the hardest. A diamond registers as a 10 on the MOHs hardness scale and tungsten carbide registers between 8.5 - 9. Jewelers use diamond tipped engraving tools to e (MORE)

Who discovered tungsten?

Tungsten was discovered by two brothers named Juan José and Fausto Elhuyar, Spanish chemists, in 1783 in samples of the mineral wolframite ((Fe, Mn)WO4). In 1781, Carl Wilhelm Scheele had suggested that it might be possible to obtain a new metal by reducing an acid made from Scheelite (calcium t (MORE)

Who invented tungsten?

Robert Mushet invented tungsten steel in 1868. No one invented Tungsten it is a naturally occurring element with the atomic number of 74. It was discovered in 1783 by the Portuguese brothers Jose and Fausto Elhuyar

How is tungsten used?

Tungsten is a chemical element and a very durable metal when formed into tungsten carbide. It has a high melting point of 6192 degrees, a hardness rating of a 9 on the Mohs Scale (10 being diamonds), and stable isotopes for longevity. Due to these characteristics, tungsten is used in light bulbs, (MORE)

Properties of tungsten?

It is a very hard metal. It is denser than lead and almost as dense as gold. It has the highest melting point of any metal

How did tungsten get its name?

Tungsten is represented by the symbol W which came from its earliername of Wolfram. Tungsten comes from Tung Sten, the Swedish wordsmeaning heavy stone.

Is tungsten a solid?

Yes, tungsten is a metal. This is from wikipedia A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite. It is remarkable for its robust physical properties, especially the fact that it has the highest melting point of all the non-alloyed metals and the secon (MORE)

What is Tungsten used for?

Tungsten is mainly used as light bulb filaments. Other uses of it include model rocket igniters, bullets, and also in rocket engine nozzles, because of it's ability to stand high temperatures. Tungsten is also used in a Tungsten-Carbide alloy which is extremely hard and useful in the tips of cutt (MORE)

What is the origin of Tungsten?

Tungsten occurs naturally on Earth. It is expected to have been produced by the same supernovae that produced our other heavy elements.. It was first identified by Johan Gottschalk Wallerius in 1747.. There are mines in Europe and China that produce most of it. A few mines in North and South Ameri (MORE)

What is the formula for tungsten?

Tungsten is an element, so there is no 'formula'. Its chemical abbreviation is 'W'. Why 'W'? It turns out that the older name for tungsten is 'Wolfram', hence 'W'.

Who discover tungsten?

Tungsten was discovered many years ago by a man called micheal chesser. he was very unpopular till his discovery of it was produced and now he is one of the richest men in the world !

What is the strength of tungsten?

To measure the strength of tungsten, you would use the MOHs scale. This is used to measure hardness on a scale from 1 to 10. Diamonds are the hardest substance on earth and they are a solid 10 on the scale. Tungsten 8.5 - 9.0 Titanium - 6 Palladium - 5 Platinum 4 - 4.5 Gold 2.5 - 3 Source: (MORE)

Why tungsten emit light when heated?

when a current pass through a conductor it will heat it and raise its temperature, electrons will starts vibrating the conductor's atoms. Bound electrons in the vibrating atoms may be boosted temporarily to a higher energy level. When they fall back to their normal levels, the electrons release the (MORE)

Why is tungsten name tungsten?

Tungsten's name originates from the Sweedish words "tung sten" (meaning "heavy stone"), but is also called "wolfram" in German, from wolframite, the rock that it is found in.

Is a Fresnel light the same as a Tungsten light and if so how?

No. A Tungsten light is an incandescent lamp with its filament made from tungsten. Strictly speaking there is no such thing as a Fresnel light. There is a Fresnel lens , which is a lens whose surface has concentric ridges rather than a smooth surface like a normal lens. Although fairly useless for (MORE)

What is special about tungsten?

Tungsten, also known as wolfram, is an element with the symbol W and atomic number 74. Tungsten is as known as one of the heaviest materials except gold for the density of tungsten is 19.25  g•cm −3 . Tungsten is a typical element of transition element Group VI and shows oxidation (MORE)

Why is Tungsten used to make the filament of a light bulb?

Tungsten is used because it has the highest melting point of all the metallic elements. It melts at 3410 degrees Celsius. When current passes through the filament it heats it up. When the filament reaches a certain temperature it starts to give off light, that's how you get a light bulb.

How does tungsten help the light bulb work?

An electric current passes through a very thin filament of tungsten, which to some degree resists the current and heats up until it glows brightly. Other substances could be used, but tungsten has the advantage of having an extremely high melting point and staying strong at high temperatures.

Can you melt Tungsten?

Yes, it is possible to melt tungsten. But it require extremely high temperatures. Tungsten melts at 3695 K (or if you prefer other units, 3422 °C, or 6192 °F)

What is pure tungsten?

As a high performance material, pure tungsten has high melting temperature, high density, low vapor pressure, low thermal expansion combined with good thermal conductivity, sufficient electrical resistance and high modulus of elasticity.

Why is the filament of a light bulb made from tungsten?

Edison tried many different materials to invent a light bulb that works. After 1,000 failures he finally found tungsten worked best. Because of the heat, out of all the metals, tungsten has the highest melting point. . Correction: Edison arrived at carbon, not tungsten. Tungsten was first used i (MORE)

Why was tungsten called tungsten?

Tungsten was originally called wolfram, from the German wolframite. It was changed later to tungsten, from the Swedish words tung sten, or heavy stone.

How is resistance used to create light in a tungsten light bulb?

Electricity creates heat when flowing through a resistor such as the filament in a tungsten light bulb, and, since the heat can not be readily conducted away in the near vacuum inside a light bulb, the heat eventually raises the temperature of the filament to a value that leads to radiation of light (MORE)

How malleable is tungsten?

It is as hard as a rock, configured with tight, small spaced molecules. When heated, much more malleable than in its solid state.

Is tungsten tougher that tungsten carbide?

No. Tungsten is an element, where as tungsten carbide is an alloy, or a mixture of elements (tungsten, nickel, tantalum, niobium, titanium, and chromium). Tungsten carbide is much easier to work into styles and designs, but does not change the hardness of the metal.

What is the direncence between a light bulb and a tungsten light bulb?

Common old-fashioned light bulbs are of the incandescent type(including halogen) with a tungsten filament glowing at about 3000degrees C emitting black-body radiation (light and heat). Tungstenis used because it has the highest melting-point of all metals. The other type of bulb is fluorescent, of (MORE)

Is an electric current that flows through a tungsten wire in a light bulb creating a glow an example of the 1st or 2nd law of thermodynamics?

It really shows both but the relationship to the 1 st law is a lot more obvious. The light coming from the glowing wire is an example of energy. By the first law, that energy must have come from somewhere - in this case the electricity passing through the wire with some of that energy being conver (MORE)

How is tungsten matched to day light?

Daylight's colour temperature is approx. 6000 degrees Kelvin, whereas tungsten light tends to be around 3200 degrees K. In other words, much redder. This can be compensated for by using Tungsten-balanced colour film, or the appropriate compensation filter for film, or your white balance for digital (MORE)

What is tungsten alloy?

An alloy that contains tungsten. An alloy is a mix of metals (or of a metal and other elements); tungsten, also known as wolfram, is a metallic element.

What is the texture for tungsten?

Texture is not a word one usually associates with a metal, but itfeels like any other metal, smooth and cold, or gritty if it'spowdered.