tungsten

Definitions

  • WordNet 3.6
    • n tungsten a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
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Webster's Revised Unabridged Dictionary
    • Tungsten (Chem) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18.
    • Tungsten (Min) Scheelite, or calcium tungstate.
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Century Dictionary and Cyclopedia
    • n tungsten Metallic tungsten has been obtained by means of the electric furnace in a fused state, though not quite compact, and probably not quite pure. It is of rather bright gray color, with metallic luster, specific gravity 18.7, hard, but not sufficiently so to scratch glass, of very high melting-point and softening gradually before fusion, so that it may be welded. It is little acted on by air or water at ordinary temperature, slowly attacked by hydrochloric, hydrofluoric, or sulphuric acid, rapidly by hydrochloric or hydrofluoric acid with addition of nitric acid, and when in powder burns in the air at a red heat.
    • n tungsten Chemical symbol, W; atomic weight, 183.5. A metal some of whose ores have long been known (see wolfram and scheelite), but they were supposed to be compounds of tin. That scheelite (tungstate of lime) was a compound of lime with a peculiar metallic acid was proved by Scheele and Bergman in 1781, and the composition of wolfram was also determined by the brothers D'Elhujar a few years later. Metallic tungsten, as obtained by the reduction of the trioxid, is a gray powder having a metallic luster and a specific gravity of 19.129 (Roscoe). The most interesting fact in regard to tungsten is that tungsteniferous minerals, especially wolfram, are very frequent associates of the ores of tin. (See wolfram.) Tungsten has been experimented with in various ways, as in improving the quality of steel by being added to it in small quantity; but no alloy containing tungsten has come into general use. (See tungsten steel, under steel.) A new alloy called sideraphite, containing a large percentage of iron, with some nickel, aluminium, and copper, together with 4 per cent. of tungsten, has recently been introduced; this is said to resemble silver, and to be very ductile and malleable and not easily attacked by acids. Another alloy called minargent, consisting chiefly of copper and nickel, is said sometimes to contain a small percentage of tungsten. Tungsten is chemically related to molybdenum and uranium. Certain chemically remarkable compounds of tungsten (tungstates with tungsten dioxid) have been employed as substitutes for bronze-powder.
    • n tungsten The native tungstate of lime.
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Chambers's Twentieth Century Dictionary
    • n Tungsten tung′sten a rare metal, chiefly derived from wolfram, which is a tungstate of iron and manganese, and likewise found in scheelite, which is a tungstate of lime
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Etymology

Webster's Revised Unabridged Dictionary
Sw. tungsten,cf. Dan. tungsteen, G. tungstein,); tung, heavy (akin to Dan. tung, Icel. þungr,) + sten, stone. See Stone
Chambers's Twentieth Century Dictionary
Sw.,—tung, heavy, sten, stone.

Usage

In literature:

And I'll use a tungsten filament lamp in the sending booth.
"Tom Swift and his Photo Telephone" by Victor Appleton
Perhaps you don't all know what tungsten is.
"The Riddle of the Frozen Flame" by Mary E. Hanshew
Where can tungsten, or tungsten steel, be procured, and at what price?
"Scientific American, Volume XXXVI., No. 8, February 24, 1877" by Various
Tungsten, as an alloy in steel, has been known and used for a long time.
"The Working of Steel" by Fred H. Colvin
In its place was a 100-watt tungsten lamp whose rays made the white table cloth fairly glisten.
"Electricity for the farm" by Frederick Irving Anderson
He'll rue this adventure, or they call me Tungsten for nothing!
"The Pagan Madonna" by Harold MacGrath
The end of the war created a possible tungsten shortage in this country into a tungsten surplus.
"The Economic Aspect of Geology" by C. K. Leith
Tungsten, in incandescent lamps, 231.
"Common Science" by Carleton W. Washburne
One's part tungsten or I'm crazy.
"The Fifth-Dimension Tube" by William Fitzgerald Jenkins
I never even heard of tungsten!
"Shadow Mountain" by Dane Coolidge
Tungsten is found in wolframite in Boulder county.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6" by Various
Yet the Tungsten becomes old-fashioned in a year.
"The Challenge of the Country" by George Walter Fiske
She switched it on and the tungsten elements immediately began to glow.
"Syndrome" by Thomas Hoover
C. Spectral energy curve of tungsten (gas-filled) glow lamp.
"The Nature of Animal Light" by E. Newton Harvey
It consists of tungsten and oxygen, but is not an oxide since there is also iron in the partnership.
"The Romance of War Inventions" by Thomas W. Corbin
Then Ruth touched the trigger of the big tungsten lamp, and the spotlight shot the herd at about the middle of its advance wave.
"Ruth Fielding In the Saddle" by Alice B. Emerson
At Tungsten, the end of the trail, the scouts visited the district where this metal is mined.
"Girl Scouts in the Rockies" by Lillian Elizabeth Roy
Tungsten is a metal which has been finding more and more uses of late years, but the production has remained quite limited.
"The Business of Mining" by Arthur J. Hoskin
Tungsten lamps are giving good satisfaction for farm use.
"Farm Mechanics" by Herbert A. Shearer
A test for tungsten with zinc and hydrochloric acid proved negative.
"Barium, A Cause of the Loco-Weed Disease" by Albert Cornelius Crawford
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In news:

It features a tungsten-carbide ball.
Electroless Nickel on Tungsten .
Can one apply electroless nickel over a tungsten metal matrix.
Starck and Jiangxi Expand Tungsten Business in China.
How to add an insert to tungsten weights.
With the addition of 2 percent lanthanated and zirconiated, Weldcraft now offers seven types of premium tungsten electrodes.
Weldcraft has expanded its premium tungsten electrode offering to include 2 percent lanthanated and zirconiated tungsten electrodes.
With the recent influx of tungsten in bass fishing, weights are becoming noticed.
The benefits of tungsten .
Starck Canada recently announced an agreement for a significant repayable loan, through Ontario's Advanced Manufacturing Investment Strategy (AMIS) program, to expand its tungsten facility in Sarnia.
Tips for Improving Gas- Tungsten -Arc-Welding Productivity.
Robotic Gas Tungsten Arc Welding.
Identifying, selecting, and preparing tungsten electrodes.
VersaMail Built for Tungsten Speed.
LED becomes industry standard beating tungsten.
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In science:

The target material is tungsten because of its high fusion point (3695K).
Intense Source of Slow Positrons
Moving a long strip of 50 µm thick tungsten in the target plane is a preferred solution to increase the beam current above 2.3 mA.
Intense Source of Slow Positrons
The light is absorbed by the superconducting electrons in a small sample of tungsten.
Methods for Producing Optical Coherent State Superpositions
The tungsten sample is voltage biased on the edge of the superconducting-to-normal transition, so a small increase in the electrons’ temperature creates a large change in the tungsten’s resistance.
Methods for Producing Optical Coherent State Superpositions
Technical description The CASTOR detector is a ˇCerenkov-effect based calorimeter with tungsten (W) absorber and quartz (Q) as sensitive material.
First performance studies of a prototype for the CASTOR forward calorimeter at the CMS experiment
An incident high-energy particle will shower in the tungsten volume and produce relativistic charged particles that will emit ˇCerenkov light in the quartz plane.
First performance studies of a prototype for the CASTOR forward calorimeter at the CMS experiment
Each tungsten absorber layer is followed by a number of quartz planes.
First performance studies of a prototype for the CASTOR forward calorimeter at the CMS experiment
We have presented a comparative study of the performances of the first prototype of the CASTOR quartz-tungsten calorimeter of the CMS experiment using different detector con figurations.
First performance studies of a prototype for the CASTOR forward calorimeter at the CMS experiment
The CASTOR (Centauro And Strange Object Research) detector is a quartz-tungsten sampling calorimeter, which has been proposed for the study of the very forward rapidity region in heavy ion and proton-proton collisions in the multi-TeV range at the LHC .
Performance Studies of Prototype II for the CASTOR forward Calorimeter at the CMS Experiment
The CASTOR detector is a ˇCerenkov-effect based calorimeter with tungsten absorber and quartz plates as active material.
Performance Studies of Prototype II for the CASTOR forward Calorimeter at the CMS Experiment
We have presented a detailed performance study of the energetic and spatial responses of a second prototype of the CASTOR quartz-tungsten calorimeter of the CMS experiment.
Performance Studies of Prototype II for the CASTOR forward Calorimeter at the CMS Experiment
The ECAL prototype consisted of 30 layers of tungsten, the first ten of thickness 1.4 mm, the next ten of 2.8 mm and the last ten of 4.2 mm, comprising 24 radiation lengths in total at normal incidence.
Response of the CALICE Si-W Electromagnetic Calorimeter Physics Prototype to Electrons
Each tungsten sheet has the same thickness in a given module.
Response of the CALICE Si-W Electromagnetic Calorimeter Physics Prototype to Electrons
The mechanical structure consists of tungsten plates wrapped in carbon fiber, creating 15 alveolas into which so-called slabs are inserted.
CALICE Si/W electromagnetic Calorimeter
Key words: Electromagnetic calorimeter, tungsten scintillating fiber.
A Tungsten / Scintillating Fiber Electromagnetic Calorimeter Prototype for a High-Rate Muon g-2 Experiment
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