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Silver Bullet
In folklore, a bullet cast from silver is often one of the few weapons that are effective against a werewolf or witch. The term ''silver bullet'' is also a metaphor for a simple, seemingly magical, solution to a difficult problem: for example, penicillin circa 1930 was a "silver bullet" that allowed doctors to treat and successfully cure many bacterial infections. In folklore Some authors asserted that the idea of the werewolf's supposed vulnerability to silver dates back to the Beast of Gévaudan, a man-eating animal killed by the hunter Jean Chastel in the year 1767. However, the allegations of Chastel purportedly using a gun loaded with silver bullets are derived from a distorted detail based primarily on Henri Pourrat's ''Histoire fidèle de la bête en Gévaudan'' (1946). In this novel, the French writer imagines that the beast was shot thanks to fictitious medals of the Virgin Mary, worn by Jean Chastel in his hat and then melted down to make bullets. An account of a Jämt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Bullet (rotated)
In folklore, a bullet cast from silver is often one of the few weapons that are effective against a werewolf or witch. The term ''silver bullet'' is also a metaphor for a simple, seemingly magical, solution to a difficult problem: for example, penicillin circa 1930 was a "silver bullet" that allowed doctors to treat and successfully cure many bacterial infections. In folklore Some authors asserted that the idea of the werewolf's supposed vulnerability to silver dates back to the Beast of Gévaudan, a man-eating animal killed by the hunter Jean Chastel in the year 1767. However, the allegations of Chastel purportedly using a gun loaded with silver bullets are derived from a distorted detail based primarily on Henri Pourrat's ''Histoire fidèle de la bête en Gévaudan'' (1946). In this novel, the French writer imagines that the beast was shot thanks to fictitious medals of the Virgin Mary, worn by Jean Chastel in his hat and then melted down to make bullets. An account of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lone Ranger
The Lone Ranger is a fictional masked former Texas Ranger who fought outlaws in the American Old West with his Native American friend Tonto. The character has been called an enduring icon of American culture. He first appeared in 1933 in a radio show on WXYZ (Detroit), conceived either by station owner George W. Trendle or by Fran Striker, the show's writer. Test episodes aired earlier on radio station WEBR in Buffalo. The radio series proved to be a hit, and spawned a series of books (largely written by Striker), an equally popular television show that ran from 1949 to 1957, comic books, and several films. The title character was played on the radio show by Earle Graser for some 1,300 episodes, but two others preceded him, according to ''The New York Times'': "a man named Deeds, who lasted only a few weeks; a George Stenius ctually George Seaton according to the ''Los Angeles Times''">George_Seaton.html" ;"title="ctually George Seaton">ctually George Seaton accordi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golden Hammer
The law of the instrument, law of the hammer, Maslow's hammer (or gavel), or golden hammer is a cognitive bias that involves an over-reliance on a familiar tool. Abraham Maslow wrote in 1966, "If the only tool you have is a hammer, it is tempting to treat everything as if it were a nail." The concept is attributed both to Maslow and to Abraham Kaplan, although the hammer and nail line may not be original to either of them. History The English expression "a Birmingham screwdriver", meaning a hammer, refers to the practice of using the one tool for all purposes, and predates both Kaplan and Maslow by at least a century. In 1868, a London periodical, '' Once a Week'', contained this observation: "Give a boy a hammer and chisel; show him how to use them; at once he begins to hack the doorposts, to take off the corners of shutter and window frames, until you teach him a better use for them, and how to keep his activity within bounds." The first recorded statement of the concept was A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M1 Garand
The M1 Garand or M1 rifleOfficially designated as U.S. rifle, caliber .30, M1, later simply called Rifle, Caliber .30, M1, also called US Rifle, Cal. .30, M1 is a semi-automatic rifle that was the service rifle of the U.S Army during World War II and the Korean War. The rifle is chambered for the .30-06 Springfield cartridge and is named after its Canadian Americans, Canadian-American designer, John Garand. It was the first standard-issue autoloading rifle for the United States. By most accounts, the M1 rifle performed well. General George S. Patton called it "the greatest battle implement ever devised". The M1 replaced the bolt-action M1903 Springfield as the U.S.' service rifle in 1936, and was itself replaced by the selective fire, selective-fire M14 rifle on March 26, 1958. Pronunciation Sources differ on the pronunciation of the M1 Garand. Some, such as General Julian Hatcher, Julian Hatcher's ''The Book of the Garand'' (1948), give , identical to the pronunciation of Joh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
45LC
The .45 Colt (11.43×33mmR), is a rimmed, straight-walled, handgun cartridge dating to 1872. It was originally a black-powder revolver round developed for the Colt Single Action Army revolver. This cartridge was adopted by the U.S. Army in 1873 and served as an official US military handgun cartridge for 14 years. History The .45 Colt was a joint development between Colt's Patent Firearms Manufacturing Company, of Hartford, Connecticut, and the Union Metallic Cartridge Company of Bridgeport, Conn. Colt began work on the revolver in 1871, and submitted a sample to the U.S. Army in late 1872. The revolver was accepted for purchase in 1873. The cartridge is an inside lubricated type. The rebated heel type bullet design of its predecessor, the .44 Colt (.452–.454" diameter bullet), was eliminated, since it was an outside lubricated type, which would pick up dirt and grit during handling. The .45 Colt replaced the .50 caliber Model 1871 Remington single shot pistol and the vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MythBusters
''MythBusters'' is a science entertainment television program, developed by Peter Rees and produced by Australia's Beyond Television Productions. The series premiered on the Discovery Channel on January 23, 2003. It was broadcast internationally by many television networks and other Discovery channels worldwide. The show's original hosts, special effects experts Adam Savage and Jamie Hyneman, used elements of the scientific method to test the validity of rumors, myths, movie scenes, adages, Internet videos, and news stories. The show was one of the most popular on Discovery Channel, being preceded only by ''How It's Made'' and ''Daily Planet'', both in Canada. Filmed in San Francisco and edited in Artarmon, New South Wales, ''MythBusters'' aired 282 total episodes before its cancellation at the end of the 2016 season in March. Planning and some experimentation took place at Hyneman's workshops in San Francisco; experiments requiring more space or special accommodations we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rifling
In firearms, rifling is machining helical grooves into the internal (bore) surface of a gun's barrel for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting to stabilize the projectile longitudinally by conservation of angular momentum, improving its aerodynamic stability and accuracy over smoothbore designs. Rifling is characterized by its twist rate, which indicates the distance the rifling takes to complete one full revolution, such as "1 turn in 10 inches" (1:10 inches), "1 turn in 254 mm" ("1:254 mm" or "1:25.4 cm)", or the like. Normally, an experienced shooter can infer the units of measurement from the numbers alone. A shorter distance indicates a faster twist, meaning that for a given velocity the projectile will rotate at a higher spin rate. The combination of length, weight, and shape of a projectile determines the twist rate needed to gyroscopically stabilize it – barrel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shear Modulus
In materials science, shear modulus or modulus of rigidity, denoted by ''G'', or sometimes ''S'' or ''μ'', is a measure of the elastic shear stiffness of a material and is defined as the ratio of shear stress to the shear strain: :G \ \stackrel\ \frac = \frac = \frac where :\tau_ = F/A \, = shear stress :F is the force which acts :A is the area on which the force acts :\gamma_ = shear strain. In engineering :=\Delta x/l = \tan \theta , elsewhere := \theta :\Delta x is the transverse displacement :l is the initial length of the area. The derived SI unit of shear modulus is the pascal (Pa), although it is usually expressed in gigapascals (GPa) or in thousand pounds per square inch (ksi). Its dimensional form is M1L−1T−2, replacing ''force'' by ''mass'' times ''acceleration''. Explanation The shear modulus is one of several quantities for measuring the stiffness of materials. All of them arise in the generalized Hooke's law: * Young's modulus ''E'' describes the mat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mohs Scale Of Mineral Hardness
The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. The scale was introduced in 1812 by the German geologist and mineralogist Friedrich Mohs, in his book ''"Versuch einer Elementar-Methode zur naturhistorischen Bestimmung und Erkennung der Fossilien"''; it is one of several definitions of hardness in materials science, some of which are more quantitative. The method of comparing hardness by observing which minerals can scratch others is of great antiquity, having been mentioned by Theophrastus in his treatise ''On Stones'', , followed by Pliny the Elder in his ''Naturalis Historia'', . The Mohs scale is useful for identification of minerals in the field, but is not an accurate predictor of how well materials endure in an industrial setting – ''toughness''. Minerals The Mohs scale of mineral hardness is based on the ability ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malleable
Ductility is a mechanical property commonly described as a material's amenability to drawing (e.g. into wire). In materials science, ductility is defined by the degree to which a material can sustain plastic deformation under tensile stress before failure. Ductility is an important consideration in engineering and manufacturing. It defines a material's suitability for certain manufacturing operations (such as cold working) and its capacity to absorb mechanical overload.. Some metals that are generally described as ductile include gold and copper. However, not all metals experience ductile failure as some can be characterized with brittle failure like cast iron. Polymers generally can be viewed as ductile materials as they typically allow for plastic deformation. Malleability, a similar mechanical property, is characterized by a material's ability to deform plastically without failure under compressive stress. Historically, materials were considered malleable if they were am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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