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The Magical Number Seven, Plus or Minus Two. " The Magical Number Seven, Plus or Minus Two: Some Limits on Our Capacity for Processing Information " [1] is one of the most highly cited papers in psychology. [2] [3] [4] It was written by the cognitive psychologist George A. Miller of Harvard University 's Department of Psychology and published ...
The 7.62 mm caliber is a nominal caliber used for a number of different cartridges. Historically, this class of cartridge was commonly known as .30 caliber, the equivalent in Imperial and United States Customary measures. It is most commonly used in hunting cartridges.
The 7.62×25mm Tokarev cartridge (designated as the 7.62 × 25 Tokarev by the C.I.P.) is a Soviet rimless bottleneck pistol cartridge widely used in former Soviet states and in China, among other countries. The cartridge has since been replaced in most capacities by the 9×18mm Makarov in Russian service.
The 7.63×25mm Mauser (.30 Mauser Automatic) round is a bottleneck, rimless, centerfire cartridge, originally developed for the Mauser C96 service pistol. This cartridge headspaces on the shoulder of the case. It later served as the basis for the 7.62mm Tokarev cartridge commonly used in Soviet and Eastern Bloc weapons.
A power of two is a number of the form 2n where n is an integer, that is, the result of exponentiation with number two as the base and integer n as the exponent . Powers of two with non-negative exponents are integers: 20 = 1, 21 = 2, and 2n is two multiplied by itself n times.
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Thus, there are 2 (n - 1)(n - 3)/8 × 2 (n - 1)(n - 3)/8 = 2 (n - 1)(n - 3)/4 equivalent magic squares obtained by combining such interchanges. Interchanging all the same sided rows flips each quadrants of the square vertically, while interchanging all the same sided columns flips each quadrant of the square horizontally.
63 is the sum of the first six powers of 2 (2 0 + 2 1 + ... 2 5). It is the eighth highly cototient number, and the fourth centered octahedral number after 7 and 25. For five unlabeled elements, there are 63 posets.
To enable the desired precision of the SVD, new 7.62×54mmR "sniper" ammunition, designated 7N1, was designed by V. M. Sabelnikov, P. P. Sazonov and V. M. Dvorianinov in 1966 to meet the new standards. 7N1 sniper cartridges should not produce more than 1.24 MOA extreme vertical spread with 240 mm twist rate barrels and no more than 1.04 MOA ...
63) 870 mm (34.3 in) stock extended / 640 mm (25.2 in) stock folded (md. 65) The Pistol Mitralieră model 1963/1965 (abbreviated PM md. 63 or simply md. 63) is a Romanian 7.62×39mm assault rifle. Developed in the late 1950s, the PM md. 63 was a derivative of the Soviet AKM produced under license. [1]