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Ammonia borane (also systematically named ammoniotrihydroborate [citation needed]), also called borazane, is the chemical compound with the formula H 3 NBH 3.The colourless or white solid is the simplest molecular boron-nitrogen-hydride compound.
Lead-alloy bullets used with gunpowder firearms were unsatisfactory at the bullet velocities available from rifles loaded with nitrocellulose propellants such as cordite.By the late 19th century, lead-alloy bullets were being enclosed within a jacket of stronger mild steel or copper alloyed with nickel or zinc to reliably impart stabilizing rotation in rifled barrels.
The Gepárd anti-materiel rifles ("gepárd" meaning cheetah in Hungarian) are a family of Hungarian weapons manufactured by Sero International Kft. designed to destroy unarmored and lightly armored targets.
From left to right 9.3×62mm, .30-06 Springfield, 7.92×57mm Mauser, 6.5×55mm and .308 Winchester cartridges Size comparison of some 6.5 mm cartridges, left to right: .264 Winchester Magnum, 6.5×55mm, 6.5×52mm Carcano, .260 Remington, 6.5mm Creedmoor, and 6.5mm Grendel
Type: Semi-automatic pistol: Place of origin: Czech Republic: Service history; Used by: Czech police: Production history; Designed: 1999: Manufacturer: Česká zbrojovka
Ruger SP101 .22lr, 8 shots, 4 1⁄5 inch barrel. The Ruger SP101 is a series of double-action revolvers produced by the American company Sturm, Ruger & Co. The SP101 is a small frame and all-steel-construction carry revolver, with a five-shot (.38 Special, .357 Magnum, and 9×19mm Parabellum); six-shot (.327 Federal Magnum, and .32 H&R Magnum); or eight-shot cylinder.
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Measurement of natural variations in the abundances of stable isotopes of the same element is normally referred to as stable isotope analysis. This field is of interest because the differences in mass between different isotopes leads to isotope fractionation, causing measurable effects on the isotopic composition of samples, characteristic of their biological or physical history.