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The Si (111) structure, by comparison, exhibits a much more complex reconstruction. Cleavage along the (111) surface at low temperatures results in another 2×1 reconstruction, differing from the (100) surface by forming long π-bonded chains in the first and second surface layers. However, when heated above 400 °C, this structure converts ...
X-ray diffraction (XRD) is still the most used method for structural analysis of chemical compounds. Yet, with increasing detail on the relation of K β {\displaystyle K_{\beta }} -line spectra and the surrounding chemical environment of the ionized metal atom, measurements of the so-called valence-to-core (V2C) energy region become ...
Anti-tank rocket launcher: M20 Super Bazooka: 3.5 in (88.9 mm) caliber warhead United States: Military aid from the United States in 1960s and main man portable anti tank weapon used until 1990s RPG-2: Anti-tank rocket launcher: BA-103: 40 mm barrel 82mm warhead Soviet Union: Received from Israel in 1980s and used extensively in 1980s and 90s
The 111th Tank Division was a Tank division of the Soviet Union's Red Army and after 1946, the Soviet Army. The division was formed in the summer of 1941 in the Soviet Far East from the tank regiment of a motorized division that had been reorganized into a motor rifle division, and had thus lost its tank regiment.
Remote controlled model of Centurion tank. Military vehicle modelers build a wide variety of models. Tanks and other armored fighting vehicles are the most popular subjects at model contests. Modelers also build ordnance, military trucks, tractors, half-tracks, artillery, and lighter vehicles such as jeeps and motorcycles.
Three-dimensional X-ray diffraction (3DXRD) is a microscopy technique using hard X-rays (with energy in the 30-100 keV range) to investigate the internal structure of polycrystalline materials in three dimensions.
A powder X-ray diffractometer in motion. X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions.
VA-111 Shkval – Original variant; GOLIS autonomous inertial guidance. "Shkval 2" – Current variant; believed to have additional guidance systems, possibly via the use of vectored thrust, and with a much longer range. A less capable version currently being exported to foreign naval forces. The export version is referred to as "Shkval-E".