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Egg Of Columbus (mechanical Puzzle)
The names Egg of Columbus and Columbus Egg have been used for several mechanical toys and puzzles inspired on the legend of Egg of Columbus, Columbus balancing an egg on its end to drive a point. Typically, these puzzles are egg (food), egg-shaped objects with internal mechanism (technology), mechanisms that make the egg stand up, once the user discovers the secret. Mechanisms typically used in such toys include moving weights, mercury (element), mercury flowing in sealed tubes or compartments, and steel balls rolling on grooves and pits. History A Columbus Egg puzzle using a rolling ball was described in an 1893 book. The Montgomery Ward catalog of 1894 includes a "Columbus Egg" toy. There are at least 18 United States patents for such devices, starting from 1891. The Germany, German company Pussycat (toy manufacturer), Pussycat sells a Columbus Egg that can be balanced by holding it upright for 25 seconds, then quickly inverting it. The egg will then stand on its pointed end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puzzle
A puzzle is a game, problem, or toy that tests a person's ingenuity or knowledge. In a puzzle, the solver is expected to put pieces together ( or take them apart) in a logical way, in order to find the solution of the puzzle. There are different genres of puzzles, such as crossword puzzles, word-search puzzles, number puzzles, relational puzzles, and logic puzzles. The academic study of puzzles is called enigmatology. Puzzles are often created to be a form of entertainment but they can also arise from serious mathematical or logical problems. In such cases, their solution may be a significant contribution to mathematical research. Etymology The ''Oxford English Dictionary'' dates the word ''puzzle'' (as a verb) to the 16th century. Its earliest use documented in the ''OED'' was in a book titled ''The Voyage of Robert Dudley...to the West Indies, 1594–95, narrated by Capt. Wyatt, by himself, and by Abram Kendall, master'' (published circa 1595). The word later came to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total population of over 84 million in an area of , making it the most populous member state of the European Union. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The Capital of Germany, nation's capital and List of cities in Germany by population, most populous city is Berlin and its main financial centre is Frankfurt; the largest urban area is the Ruhr. Settlement in the territory of modern Germany began in the Lower Paleolithic, with various tribes inhabiting it from the Neolithic onward, chiefly the Celts. Various Germanic peoples, Germanic tribes have inhabited the northern parts of modern Germany since classical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Puzzles
A mechanical puzzle is a puzzle presented as a set of mechanically interlinked pieces in which the solution is to manipulate the whole object or parts of it. While puzzles of this type have been in use by humanity as early as the 3rd century BC, one of the most well-known mechanical puzzles of modern day is the Rubik's Cube, invented by the Hungarian architect Ernő Rubik in 1974. The puzzles are typically designed for a single player, where the goal is for the player to discover the principle of the object, rather than accidentally coming up with the right solution through trial and error. With this in mind, they are often used as an intelligence test or in problem solving training. History The oldest known mechanical puzzle comes from Greece and appeared in the 3rd century BC. The game consists of a square divided into 14 parts, and the aim was to create different shapes from these pieces. This is not easy to do. (see Ostomachion loculus Archimedius) In Iran "puzzle-lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tesla's Egg Of Columbus
Tesla's Egg of Columbus was a device exhibited in the Westinghouse Electric display at the 1893 Chicago World's Columbian Exposition to explain the rotating magnetic field that drove the new alternating current induction motors designed by inventor Nikola Tesla by using that magnetic field to spin a copper egg on end. Origins At the 1893 World's Columbian Exposition Westinghouse Electric (who had a large space in the "Electricity Building" devoted to their electrical exhibits) asked Tesla to participate and gave his devices their own exhibit space. The display demonstrated a series of electrical effects related to alternating current, AC generators, and displayed many types of induction motors and explained the rotating magnetic field that drove them. With the fair celebrating the 400th anniversary of Christopher Columbus's arrival in the New World, the "Egg of Columbus" exhibit, building on the apocryphal 15th century story of the " Egg of Columbus" (where the explorer sto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superegg
In geometry, a superegg is a solid of revolution obtained by rotating an elongated superellipse with exponent greater than 2 around its longest axis. It is a special case of superellipsoid. Unlike an elongated ellipsoid, an elongated superegg can stand upright on a flat surface, or on top of another superegg. This is due to its curvature being zero at the tips. The shape was popularized by Danish poet and scientist Piet Hein (1905–1996). Supereggs of various materials, including brass, were sold as novelties or " executive toys" in the 1960s. Mathematical description The superegg is a superellipsoid whose horizontal cross-sections are circles. It is defined by the inequality :\left, \frac\^p + \left, \frac\^p \leq 1 \, , where ''R'' is the horizontal radius at the "equator" (the widest part as defined by the circles), and ''h'' is one half of the height. The exponent ''p'' determines the degree of flattening at the tips and equator. Hein's choice was ''p'' = 2.5 (the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg Of Li Chun
Egg balancing is a traditional Chinese practice of standing eggs on their ends that has also been popularized in the United States. Although the irregular shape of eggs makes this somewhat difficult, eggshells typically have many textural variations such that the vast majority can be balanced on their broad ends with minimal effort. Folklore holds that eggs can be balanced in this way only at a particular time of year: the lunar new year in China, the Dragon Boat Festival in Taiwan, or the vernal equinox in the United States. It is also said that eggs can be balanced on the heads of nails at the equator. In reality, eggs will balance anywhere at any time of year, and the practice has no connection to the gravitational force of the moon or sun. History Lichun egg Egg balancing has been connected with Lichun, the solar term beginning ''Chinese'' spring () on February 4 or 5 when the sun is at the celestial longitude of 315°. On this day, fresh chicken eggs were balanced on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg Of Columbus (tangram Puzzle)
The Egg of Columbus (''Ei des Columbus'' in German) is a dissection puzzle consisting of a flat egg-like shape divided into 9 or 10 pieces by straight cuts. The goal of the puzzle is to rearrange the pieces to form other specific shapes, such as animals (see below). The earliest known examples were produced by German toy manufacturer Richter. Production was ceased in 1963, but renewed at the start of the 21st century.Put-Together - Ei Des Columbus aka Egg of Columbus accessed 2008-10-11 Because the two pieces coloured turquoise in these diagrams lack , some shapes in which both pieces have the same |
Pussycat (toy Manufacturer)
Pussycat(s) or Pussy Cat(s) may refer to: * Cat, a domestic feline pet Music Bands * Pussycat (band), a Dutch country and pop group * The Pussycats, a 1960s Norwegian rock band * The Pussycats, a group signed to Kama Sutra Records Albums * ''Pussycat'' (album), by Juliana Hatfield, 2017 * '' Pussy Cats'', by Harry Nilsson, 1974 * '' "Pussy Cats" Starring the Walkmen'', a cover of the 1974 album by the Walkmen, 2006 Songs * "Pussy Cat", a song by the Ames Brothers, 1958 * "Pussycat", a song by Missy Elliott from '' Under Construction'' * "Pussycat" (Wyclef Jean song), 2002 Other uses * Philip Gudthaykudthay (died 2022), an Australian artist, known as Pussycat * Pussycat, one of Catwoman's minions, played by Lesley Gore, on the 1967 TV series ''Batman'' * Pussycat, a robot in the TV series ''Robot Wars'' * Pussycat (comics), a 1960s fictional character in a comic * " Pussy Cat Pussy Cat", an English nursery rhyme * Pussycat Theaters, a chain of adult movie theaters in Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an sufficiency of disclosure, enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg Of Columbus
An egg of Columbus or Columbus's egg ( ) refers to a seemingly impossible task that becomes easy once understood. The expression refers to an apocryphal story, dating from at least the 16th century, in which it is said that Christopher Columbus, having been told that finding a new trade route was inevitable and no great accomplishment, challenges his critics to make an egg stand on its tip. After his challengers give up, Columbus does it himself by tapping the egg on the table to flatten its tip. The story is often alluded to when discussing creativity. The term has also been used as the trade name of a tangram puzzle and several mechanical puzzles. Source of the story The Columbus egg story may have originated with Italian historian and traveler Girolamo Benzoni. In his book ''History of the New World'', published in 1565, he wrote: The factual accuracy of this story is called into question by its similarity to another tale published fifteen years earlier (while Benzoni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montgomery Ward
Montgomery Ward is the name of two successive U.S. retail corporations. The original Montgomery Ward & Co. was a mail-order business and later a department store chain that operated between 1872 and 2001; its common nickname was "Monkey Wards". The current Montgomery Ward Inc. is an online shopping and mail-order catalog retailer that started several years after the original Montgomery Ward shut down. Original Montgomery Ward (1872–2001) Company origins Aaron Montgomery Ward started his business in Chicago; conflicting reports place his first office either in a single room at 825 North Clark Street or in a loft above a livery stable on Kinzie Street, between Rush and State Streets. In 1883, the company's catalog had grown to 240 pages and 10,000 items. In 1896, Ward encountered its first serious competition in the mail order business, when Richard Warren Sears introduced his first general catalog. In 1900, Ward had total sales of $8.7 million, compared to $10 million for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
