| slovo | definícia |
tungsten
(encz) | tungsten,wolfram n: W Zdeněk Brož |
Tungsten
(gcide) | Tungsten \Tung"sten\ (t[u^]ng"st[e^]n), n. [Sw. tungsten (cf.
Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung,
Icel. [thorn]ungr) + sten stone. See Stone.]
1. (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.
[1913 Webster]
2. (Min.) Scheelite, or calcium tungstate. [Obs.]
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Tungsten ocher, or Tungstic ocher (Min.), tungstite.
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tungsten
(wn) | tungsten
n 1: 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 [syn: tungsten,
wolfram, W, atomic number 74] |
tungsten
(elements) | tungsten
Symbol: W
Atomic number: 74
Atomic weight: 183.85
White or grey metallic transition element, formerly called wolfram.
Forms a protective oxide in air and can be oxidized at high temperature.
First isolated by Jose and Fausto de Elhuyer in 1783.
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| | podobné slovo | definícia |
chrome-tungsten steel
(encz) | chrome-tungsten steel, n: |
iron manganese tungsten
(encz) | iron manganese tungsten, n: |
tungsten
(encz) | tungsten,wolfram n: W Zdeněk Brož |
tungsten steel
(encz) | tungsten steel, n: |
Tungsten lamp
(gcide) | Tungsten lamp \Tung"sten lamp\
An electric glow lamp having filaments of metallic tungsten,
and contained in a glass bulb which is evacuated or has an
inert gas, to avoid oxidation of the tungsten; a common form
of light bulb. Such lamps, owing to the refractory nature of
the metal, may be maintained at a very high temperature and
require an expenditure of only about 1.25 watts per candle
power, depending on the total wattage and the design of the
bulb. By mid-20th century tungsten lamps became the most
common type of incandescent (as contrasted with fluorescent)
lamp; thus the phrase
incandescent lamp or
incandescent light typically refers to a tungsten lamp.
[Webster 1913 Suppl. +PJC] |
Tungsten ocher
(gcide) | Tungsten \Tung"sten\ (t[u^]ng"st[e^]n), n. [Sw. tungsten (cf.
Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung,
Icel. [thorn]ungr) + sten stone. See Stone.]
1. (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.
[1913 Webster]
2. (Min.) Scheelite, or calcium tungstate. [Obs.]
[1913 Webster]
Tungsten ocher, or Tungstic ocher (Min.), tungstite.
[1913 Webster] |
Tungsten steel
(gcide) | Steel \Steel\ (st[=e]l), n. [AS. st[=e]l, st[=y]l, st[=y]le;
akin to D. staal, G. stahl, OHG. stahal, Icel. st[=a]l, Dan.
staal, Sw. st[*a]l, Old Prussian stakla.]
1. (Metal) A variety of iron intermediate in composition and
properties between wrought iron and cast iron (containing
between one half of one per cent and one and a half per
cent of carbon), and consisting of an alloy of iron with
an iron carbide. Steel, unlike wrought iron, can be
tempered, and retains magnetism. Its malleability
decreases, and fusibility increases, with an increase in
carbon.
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2. An instrument or implement made of steel; as:
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(a) A weapon, as a sword, dagger, etc. "Brave Macbeth . .
. with his brandished steel." --Shak.
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While doubting thus he stood,
Received the steel bathed in his brother's
blood. --Dryden.
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(b) An instrument of steel (usually a round rod) for
sharpening knives.
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(c) A piece of steel for striking sparks from flint.
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3. Fig.: Anything of extreme hardness; that which is
characterized by sternness or rigor. "Heads of steel."
--Johnson. "Manhood's heart of steel." --Byron.
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4. (Med.) A chalybeate medicine. --Dunglison.
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Note: Steel is often used in the formation of compounds,
generally of obvious meaning; as, steel-clad,
steel-girt, steel-hearted, steel-plated, steel-pointed,
etc.
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Bessemer steel (Metal.) See in the Vocabulary.
Blister steel. (Metal.) See under Blister.
Cast steel (Metal.), a fine variety of steel, originally
made by smelting blister or cementation steel; hence,
ordinarily, steel of any process of production when
remelted and cast.
Chrome steel, Chromium steel (Metal.), a hard, tenacious
variety containing a little chromium, and somewhat
resembling tungsten steel.
Mild steel (Metal.), a kind of steel having a lower
proportion of carbon than ordinary steel, rendering it
softer and more malleable.
Puddled steel (Metal.), a variety of steel produced from
cast iron by the puddling process.
Steel duck (Zool.), the goosander, or merganser. [Prov.
Eng.]
Steel mill.
(a) (Firearms) See Wheel lock, under Wheel.
(b) A mill which has steel grinding surfaces.
(c) A mill where steel is manufactured.
Steel trap, a trap for catching wild animals. It consists
of two iron jaws, which close by means of a powerful steel
spring when the animal disturbs the catch, or tongue, by
which they are kept open.
Steel wine, wine, usually sherry, in which steel filings
have been placed for a considerable time, -- used as a
medicine.
Tincture of steel (Med.), an alcoholic solution of the
chloride of iron.
Tungsten steel (Metal.), a variety of steel containing a
small amount of tungsten, and noted for its tenacity and
hardness, as well as for its malleability and tempering
qualities. It is also noted for its magnetic properties.
[1913 Webster]Tungsten steel \Tungsten steel\ (Metal.)
A steel containing a small amount of tungsten, noted for
tenacity and hardness, even under a considerable degree of
heat. Magnets made of it are said to be highly permanent. It
often contains manganese.
[Webster 1913 Suppl.] |
Tungstenic
(gcide) | Tungstenic \Tung*sten"ic\ (t[u^]ng*st[e^]n"[i^]k), a.
Of or pertaining to tungsten; containing tungsten; as,
tungstenic ores. [R.]
[1913 Webster] |
chrome-tungsten steel
(wn) | chrome-tungsten steel
n 1: a steel alloy made with chromium and tungsten |
iron manganese tungsten
(wn) | iron manganese tungsten
n 1: a mineral consisting of iron and manganese tungstate in
crystalline form; the principal ore of tungsten; found in
quartz veins associated with granitic rocks [syn:
wolframite, iron manganese tungsten] |
tungsten
(wn) | tungsten
n 1: 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 [syn: tungsten,
wolfram, W, atomic number 74] |
tungsten steel
(wn) | tungsten steel
n 1: a very hard heat-resistant steel containing tungsten [syn:
tungsten steel, wolfram steel] |
tungsten
(elements) | tungsten
Symbol: W
Atomic number: 74
Atomic weight: 183.85
White or grey metallic transition element, formerly called wolfram.
Forms a protective oxide in air and can be oxidized at high temperature.
First isolated by Jose and Fausto de Elhuyer in 1783.
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