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40 W tungsten incandescent (120 V, general service) 1.9% 12.6 [1] 60 W tungsten incandescent (120 V, general service) 2.1% 14.5 [1] 100 W tungsten incandescent (120 V, general service) 2.6% 17.5 [1] Glass halogen 2.3% 16 Quartz halogen 3.5% 24 Photographic and projection lamps with very high filament temperatures and short lifetimes 5.1% 35 [84]
A few sizes are close enough to interchange for most purposes, such as 19 mm (close to 3 ⁄ 4 inch (19.05 mm)), 8 mm (close to 5 ⁄ 16 inch (7.94 mm)) and 4 mm (close to 5 ⁄ 32 inch (3.97 mm)). In reality, a wrench with a width across the flats of exactly 15 mm would fit too tightly to use on a bolt with a width across the flats of 15 mm.
Tungsten (also called wolfram) [14] [15] is a chemical element; it has symbol W and atomic number 74. ... (tungsten beads allow the fly to sink rapidly).
Substance Class T C (K) H C (T) Type BCS References Al: Element 1.20 0.01 I yes [1] [2] [3]Bi: Element 5.3 × 10 −4: 5.2 × 10 −6: I no [note 1] [4]Cd: Element 0.52 0.0028 I yes [2] [3]Diamond:B
Thirty-four artificial radioisotopes of tungsten have been characterized with mass numbers ranging from 156 to 194, the most stable of which are 181 W with a half-life of 121.2 days, 185 W with a half-life of 75.1 days, 188 W with a half-life of 69.4 days and 178 W with a half-life of 21.6 days.
The unit cell of beta-tungsten. Beta-tungsten (β-W) is a metastable phase of tungsten widely observed in tungsten thin films.While the commonly existing stable alpha-tungsten (α-W) has a body-centered cubic structure, β-W adopts the topologically close-packed A15 structure containing eight atoms per unit cell, [1] [2] and it irreversibly transforms to the stable α phase through thermal ...
Mesh is a measurement of particle size often used in determining the particle-size distribution of a granular material. For example, a sample from a truckload of peanuts may be placed atop a mesh with 5 mm openings. When the mesh is shaken, small broken pieces and dust pass through the mesh while whole peanuts are retained on the mesh.
Mallory metal is proprietary name [1] for an alloy of tungsten, with other metallic elements added to improve machining.. Its primary use is as a balance weight which is added to the crankshaft of an automotive engine, where the existing counterweight is not large enough to compensate for the weight of the reciprocating and rotating components attached to the crankshaft's connecting rod journals.
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