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Bulk moduli, shear moduli, and elasticity are the key factors in the superhard classification process. The incompressibility of a material is quantified by the bulk modulus B, which measures the resistance of a solid to volume compression under hydrostatic stress as B = −Vdp/dV. Here V is the volume, p is pressure, and dp/dV is the partial ...
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Generically IUPAC defines a superbase as a "compound having a very high basicity, such as lithium diisopropylamide." [5] Superbases are often defined in two broad categories, organic and organometallic.
Titanium nitride (TiN) is a refractory solid exhibiting extreme hardness, thermal/electrical conductivity, and a high melting point. [46] TiN has a hardness equivalent to sapphire and carborundum (9.0 on the Mohs scale ), [ 47 ] and is often used to coat cutting tools, such as drill bits . [ 48 ]
The strategic value of tungsten came to notice in the early 20th century. British authorities acted in 1912 to free the Carrock mine from the German owned Cumbrian Mining Company and, during World War I, restrict German access elsewhere. [53] In World War II, tungsten played a more significant role in background political dealings.
Scientists at San Jose State University say that a large fire that burned at a battery plant in Monterrey County, California earlier this month has left heightened levels of heavy metals in a ...
In geometry, the Rhombicosidodecahedron is an Archimedean solid, one of thirteen convex isogonal nonprismatic solids constructed of two or more types of regular polygon faces. It has a total of 62 faces: 20 regular triangular faces, 30 square faces, 12 regular pentagonal faces, with 60 vertices , and 120 edges .
When you think of snakes, you may be most concerned about whether the snake is venomous or not. Rattlesnakes in the United States are very venomous; the Black Mamba is an extremely venomous snake ...