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Elongated Coin
An elongated coin (also known as a pressed penny or smashed penny) is a coin that has been flattened or stretched, and embossed with a new design. Such coins are often used as commemorative or souvenir tokens, and it is common to find coin elongation machines in tourism hubs, such as museums, amusement parks, and natural or man-made landmarks. The collecting of elongated coins is a branch of numismatics. Elongated coins are also categorized as exonumia. History The first elongated coins in the United States were created at the World's Columbian Exposition, held in 1893 in Chicago, Illinois. Several designs were issued to commemorate the fair, and are available in the elongated coin collecting community today. The earliest elongated coin designer on record is Charles Damm, who created the design for the elongated coins available at the 1901 Pan-American Exposition in Buffalo, New York. The production of elongated coins can be divided into three general classes, each of whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elongated Coin Kansas City EC Meet 2010
Elongation may refer to: * Elongation (astronomy) * Elongation (geometry) * Elongation (plasma physics) * Part of Transcription (biology)#Elongation, transcription of DNA into RNA of all types, including mRNA, tRNA, rRNA, etc. * Part of translation (biology) of mRNA into proteins * Anatomical terms of location#Elongated organisms, Elongated organisms * Elongation (mechanics), linear deformation See also * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling Mill
In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is known as cold rolling. In terms of usage, hot rolling processes more tonnage than any other manufacturing process, and cold rolling processes the most tonnage out of all cold working processes... Roll stands holding pairs of rolls are grouped together into rolling mills that can quickly process metal, typically steel, into products such as structural steel (I-beams, angle stock, channel stock), bar stock, and rails. Most steel mill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Title 18 Of The United States Code
Title 18 of the United States Code is the main criminal code of the federal government of the United States. The Title deals with federal crimes and criminal procedure. In its coverage, Title 18 is similar to most U.S. state criminal codes, typically referred to by names such as Penal Code, Criminal Code, or Crimes Code. Typical of state criminal codes is the California Penal Code. Many U.S. state criminal codes, unlike the federal Title 18, are based on the Model Penal Code promulgated by the American Law Institute. Title 18 consists of five parts. Four of these, Parts I through IV, concern crimes, criminal procedure, prisons and prisoners, and juvenile delinquency, respectively, and were included in the original title when it was enacted in 1948. The fifth part, concerning witness immunity, was not included in the original title but was added in 1970. Part I—Crimes The odd-numbered chapters (i.e. chapters 1 through 117) were all included in the original Title 18. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east. Europe shares the landmass of Eurasia with Asia, and of Afro-Eurasia with both Africa and Asia. Europe is commonly considered to be Boundaries between the continents#Asia and Europe, separated from Asia by the Drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea, and the waterway of the Bosporus, Bosporus Strait. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Black Sea with its outlets, the Bosporus and Dardanelles." Europe covers approx. , or 2% of Earth#Surface, Earth's surface (6.8% of Earth's land area), making it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic Ocean, South Atlantic and Indian Ocean; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; to the east and northeast by Mozambique and Eswatini; and it encloses Lesotho. Covering an area of , the country has Demographics of South Africa, a population of over 64 million people. Pretoria is the administrative capital, while Cape Town, as the seat of Parliament of South Africa, Parliament, is the legislative capital, and Bloemfontein is regarded as the judicial capital. The largest, most populous city is Johannesburg, followed by Cape Town and Durban. Cradle of Humankind, Archaeological findings suggest that various hominid species existed in South Africa about 2.5 million years ago, and modern humans inhabited the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel (United States Coin)
A nickel is a five-cent (currency), cent coin struck by the United States Mint. Composed of cupronickel (75% copper and 25% nickel), the piece has been issued since 1866. Its diameter is 0.835 inches (21.21 mm) and its thickness is 0.077 inches (1.95 mm). The silver half dime, equal to five cents, was issued from 1792 to 1873 before today's cupronickel version. The American Civil War caused economic hardship, driving gold and silver from circulation; in response, in place of low-value coins, the government at first issued paper currency. In 1865, Congress abolished the five-cent fractional currency note after Spencer M. Clark, head of the Currency Bureau (today the Bureau of Engraving and Printing), placed his own portrait on the denomination. After the successful introduction of two-cent piece (United States coin), two-cent and three-cent nickel, three-cent pieces without precious metal, Congress also authorized a five-cent piece consisting of base metal; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dime (United States Coin)
The dime, in United States usage, is a ten- cent coin, one tenth of a United States dollar, labeled formally as "one dime". The denomination was first authorized by the Coinage Act of 1792. The dime is the smallest in diameter and is the thinnest of all U.S. coins currently minted for circulation, being in diameter and in thickness. The obverse of the current dime depicts the profile of President Franklin D. Roosevelt and the reverse has an olive branch, a torch, and an oak branch, from left to right respectively. The word ''dime'' comes from the Old French ''disme'' (Modern French">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... ''disme'' (Modern French dîme), meaning "tithe" or "tenth part", from the Latin ''decima [pars]''. The dime is currently the only United States coin in general circulation that is not denominated in terms of dollars or cent (United States coin), cents. , the dime co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter (United States Coin)
The quarter, formally known as the quarter dollar, is a coin in the United States valued at 25 cents, representing one-quarter of a United States dollar, dollar. Adorning its obverse is the profile of George Washington, while its reverse design has undergone frequent changes since 1998. Since its initial production in 1796, the quarter dollar has held a significant place in American numismatics, with consistent production since 1831. It has a diameter of 0.955 inch (24.26 mm) and a thickness of 0.069 inch (1.75 mm). Its current version is composed of two layers of cupronickel (75% copper, 25% nickel) clad on a core of pure copper. With the cupronickel layers comprising 1/3 of total weight, the coin's overall composition is therefore 8.33% nickel, 91.67% copper. Its weight is 0.1823 troy oz. or 0.2000 Avoirdupois system, avoirdupois oz. (5.670 grams). Designs before 1932 The choice of a quarter-dollar as a denomination, as opposed to the or the 20-cent piece that is m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penny (United States Coin)
The penny, officially known as the cent, is a coin in the United States representing one-hundredth of a dollar. It has been the lowest face-value physical unit of U.S. currency since the abolition of the half-cent in 1857 (the abstract mill, which has never been minted, equal to a tenth of a cent, continues to see limited use in the fields of taxation and finance). The U.S. Mint's official name for the coin is " cent" and the U.S. Treasury's official name is "one cent piece". The colloquial term ''penny'' derives from the British coin of the same name, which occupies a similar place in the British system. ''Pennies'' is the plural form (not to be confused with ''pence'', which refers to the unit of currency). The first U.S. cent was produced in 1787, and the cent has been issued primarily as a copper or copper-plated coin throughout its history. In 1792, Congress established the US Mint, which began producing coins. In the same year, the Coinage Act of 1792 mand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary Tool
A die grinder or rotary tool is a handheld power tool and multitool used for grinding (abrasive cutting), grinding, sanding, honing (metalworking), honing, polishing, or machining material (typically metal, but also plastic or wood). All such tools are conceptually similar, with no bright dividing line between die grinders and rotary tools, although the ''die grinder'' name tends to be used for pneumatically driven heavy-duty versions whereas the ''rotary tool'' name tends to be used for electric lighter-duty versions. Flexible shaft drive versions also exist. The ''die grinder'' name comes from one of their earliest and archetypal applications, tool and die maker, tool and die work, where they were used to create the precise contours of die (manufacturing), dies or moldmaker, molds. Especially before the advent of widespread numerical control, CNC usage, they were heavily relied upon for contouring via manual skill comparable to a sculpture, sculptor's. CNC now provides much of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantograph
A pantograph (, from their original use for copying writing) is a Linkage (mechanical), mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen. If a line drawing is traced by the first point, an identical, enlarged, or miniaturized copy will be drawn by a pen fixed to the other. Using the same principle, different kinds of pantographs are used for other forms of duplication in areas such as sculpting, Mint (facility), minting, engraving, and Milling (machining), milling. History The ancient Greek engineer Hero of Alexandria described pantographs in his work ''Mechanics''. In 1603, Christoph Scheiner used a pantograph to copy and scale diagrams, and wrote about the invention over 27 years later, in ''"Pantographice seu Ars delineandi res quaslibet per parallelogrammum lineare seu cavum"'' (Rome 1631). One arm of the pantograph contained a small pointer, while the oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
