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Necking (architecture)
Necking can refer to: * Making out, a term for heavy kissing of the neck or petting of that area * Necking (engineering), the process by which a ductile material deforms under tension forming a thin ''neck'' * Necking (electronics), thinning of traces in PCB layouts * Necking, a behavior of giraffes * Necking up or necking down, methods of modifying a firearm cartridge to make a wildcat cartridge A wildcat cartridge, often shortened to wildcat, is a custom cartridge for which ammunition and/or firearms are not mass-produced. These cartridges are often created in order to optimize a certain performance characteristic (such as the power, s ... or a new production cartridge (e.g. the US .60 caliber T17 round being shortened and necked up to create the 20×102 mm M61 Vulcan cannon cartridge) See also * Neck (other) * Rubbernecking {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Making Out
Making out is a term of American origin dating back to at least 1949, and is used to refer to kissing, including extended French kissing or heavy kissing of the neck (called ''necking''), or to acts of non-penetrative sex such as heavy petting. Equivalent terms in other dialects include the British English getting off and the Hiberno-English shifting. When performed in a stationary vehicle, it has been euphemistically referred to as ''parking'', coinciding with American car culture. History The sexual connotations of the phrase "make out" appear to have developed in the 1930s and '40s from the phrase's other meaning: "to succeed". Originally, it meant "to seduce" or "to have sexual intercourse". "Petting" ("making out" or foreplay) was popularized in the 1920s, as youth culture challenged earlier Victorian era strictures on sexuality with the rise in popularity of "petting parties". At these parties, promiscuity became more commonplace, breaking from the traditions of monog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necking (engineering)
Necking, in engineering or materials science, is a mode of tensile deformation where relatively large amounts of strain localize disproportionately in a small region of the material. The resulting prominent decrease in local cross-sectional area provides the basis for the name "neck". Because the local strains in the neck are large, necking is often closely associated with yielding, a form of plastic deformation associated with ductile materials, often metals or polymers. Once necking has begun, the neck becomes the exclusive location of yielding in the material, as the reduced area gives the neck the largest local stress. Formation Necking results from an instability during tensile deformation when the cross-sectional area of the sample decreases by a greater proportion than the material strain hardens.Armand Considèrepublished the basic criterion for necking in 1885, in the context of the stability of large scale structures such as bridges. Three concepts provide the frame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necking (electronics)
In printed circuit boards, teardrops are typically drop-shaped features at the junction of vias (''teardrop vias'') or contact pads (''teardrop pads'') and traces (''teardrop traces''). The main purpose of teardrops is to enhance structural integrity in presence of thermal or mechanical stresses, for example due to vibration or flexing. Structural integrity may be compromised, e.g., by misalignment during drilling, so that too much copper may be removed by the drill hole in the area where a trace connects to the pad or via. An extra advantage is the enlarging of manufacturing tolerances, making manufacturing easier and cheaper. While a typical shape of a teardrop is straight-line tapering, they may be concave. This type of teardrop is also called ''filleting'' or ''straight''. To produce a ''snowman''-shaped teardrop, a secondary pad of smaller size is added at the junction overlapping with the primary pad (hence the nickname). Necking For similar reasons, a technique call ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giraffe
The giraffe is a large African hoofed mammal belonging to the genus ''Giraffa''. It is the tallest living terrestrial animal and the largest ruminant on Earth. Traditionally, giraffes were thought to be one species, ''Giraffa camelopardalis'', with nine subspecies. Most recently, researchers proposed dividing them into up to eight extant species due to new research into their mitochondrial and nuclear DNA, as well as morphological measurements. Seven other extinct species of ''Giraffa'' are known from the fossil record. The giraffe's chief distinguishing characteristics are its extremely long neck and legs, its horn-like ossicones, and its spotted coat patterns. It is classified under the family Giraffidae, along with its closest extant relative, the okapi. Its scattered range extends from Chad in the north to South Africa in the south, and from Niger in the west to Somalia in the east. Giraffes usually inhabit savannahs and woodlands. Their food source is leaves, frui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildcat Cartridge
A wildcat cartridge, often shortened to wildcat, is a custom cartridge for which ammunition and/or firearms are not mass-produced. These cartridges are often created in order to optimize a certain performance characteristic (such as the power, size, or efficiency) of an existing commercial cartridge. Developing and using wildcat cartridges does not generally serve a purpose in military or law enforcement; it is more a hobby for serious shooting, hunting, gunsmithing, and handloading enthusiasts, particularly in the United States. There are potentially endless varieties of wildcat cartridge: one source of gunsmithing equipment has a library of over 6,000 different wildcat cartridges for which they produce equipment such as chamber reamers. Development of a wildcat Often, wildcats are commercially sold rounds that have been modified in some way to alter the cartridge's performance. Barrels for the caliber are originally manufactured by gunsmiths specializing in barrel making. Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MG 151 Cannon
The MG 151 (MG 151/15) was a German 15 mm aircraft-mounted autocannon produced by Waffenfabrik Mauser during World War II. Its 20mm variant, the 20 mm MG 151/20 cannon, was widely used on German Luftwaffe Fighter aircraft, fighters, night fighters, fighter-bombers, bombers and ground-attack aircraft. Salvaged guns saw post-war use by other nations. Development and wartime history (MG 151/20) The pre-war German doctrine for arming single-engine fighter aircraft mirrored that of the French. This doctrine favoured a powerful autocannon mounted between the cylinder banks of a V engine and firing through the propeller hub, known as a ''moteur-canon'' in French (from its first use with the Hispano-Suiza 8#Variants, Hispano-Suiza HS.8C engine in World War I, on the SPAD S.XII) and by the cognate ''Motorkanone'' in German by the 1930s. The weapon preferred by the French in this role was the most powerful 20mm Oerlikon of the time, namely the Oerlikon 20 mm cannon, FFS model, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M61 Vulcan
The M61 Vulcan is a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires rounds at an extremely high rate (typically 6,000 rounds per minute). The M61 and its derivatives have been the principal cannon armament of United States military fixed-wing aircraft for over sixty years. The M61 was originally produced by General Electric. After several mergers and acquisitions, it is currently produced by General Dynamics. Development At the end of World War II, the United States Army Air Forces began to consider new directions for future military aircraft guns. The higher speeds of jet-powered fighter aircraft meant that achieving an effective number of hits would be extremely difficult without a much higher volume of fire. While captured German designs (principally the Mauser MG 213C) showed the potential of the single-barrel revolver cannon, the practical rate of fire of such a design was still lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neck (other)
The neck is the body part between the head and torso of many animals. Neck may also refer to: Other uses in anatomy Bones * Femur neck, part of the femur bone * Surgical neck of the humerus * Anatomical neck of humerus * Neck of the malleus, part of the ear * Neck of a rib * Neck of the scapula * Neck of the talus Organs * Neck of the gallbladder * Neck of the pancreas * Neck of the urinary bladder Arts and entertainment * Neck (band), a British Celtic punk band * ''Neck'' (film), a 2010 Japanese film * Neck (music), part of certain string instruments and woodwind instruments * "Neck" (short story), by Roald Dahl * ''Necks'' (EP), by Thunderbirds Are Now!, 2005 * The Necks, an Australian jazz trio Places * Neck, Netherlands * Neck City, Missouri, United States Other uses * Necking (engineering), tensile deformation forming a neck * Neck (Chinese constellation), in Chinese astronomy * Neck (water spirit), in Germanic mythology and folklore * Volcanic neck or plug, a volca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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