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A plate showing the uniform of a U.S. Army first sergeant, circa 1858, influenced by the French army. The military uniforms of the Union Army in the American Civil War were widely varied and, due to limitations on supply of wool and other materials, based on availability and cost of materials. [1]
Hexaferrum and epsilon iron (ε-Fe) are synonyms for the hexagonal close-packed (HCP) phase of iron that is stable only at extremely high pressure. A 1964 study at the University of Rochester mixed 99.8% pure α-iron powder with sodium chloride , and pressed a 0.5-mm diameter pellet between the flat faces of two diamond anvils.
Current Service Dress uniforms worn by senior general officers and the Chief Master Sergeant of the Air Force. The current U.S. Air Force Service Dress Uniform, which was initially adopted in 1994 and made mandatory on 1 October 1999, consists of a three-button coat with silver-colored buttons featuring a design known as "Hap Arnold wings", matching trousers (women may choose to wear a ...
A UNS number only defines a specific chemical composition, it does not provided full material specification. Requirements such as material properties (yield strength, ultimate strength, hardness, etc.), heat treatment, form (rolled, cast, forged, flanges, tubes, bars, etc.), purpose (high temperature, boilers and pressure vessels, etc.) and testing methods are all specified in the material or ...
A service stripe is an embroidered diagonal stripe worn on the sleeve(s) of some military and paramilitary uniforms. In the case of the United States military, service stripes are authorized for wear by enlisted personnel on the lower part of the sleeve of a uniform to denote length of service.
The [α/Fe] versus [Fe/H] diagram is a type of graph commonly used in stellar and galactic astrophysics. It shows the logarithmic ratio number densities of diagnostic elements in stellar atmospheres compared to the solar value. The x-axis represents the abundance of iron (Fe) vs. hydrogen (H), that is, [Fe/H].
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Cornerback Dré Bly seen in 2007 with numbers visible on the front and shoulders of his uniform. In American football, uniform numbers are displayed on both the front and back of the jersey, and in many cases the sleeves, shoulder pad, or occasionally helmets. The numbers on the front and back are very large, covering most of the jersey.