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Pinwheel 1
Pinwheel may refer to: * Pinwheel (toy), a spinning children's toy * Pinwheel (cryptography), a device for producing a short pseudo-random sequence of bits * Pinwheel (shogi), an opening in the game shogi or Japanese chess * Pinwheel (TV channel), a channel which would later turn into Nickelodeon * ''Pinwheel'' (TV series), a children's show on Nickelodeon that ran from 1977 to 1984 * Pinwheel calculator (part of), a type of early mechanical arithmetic machine * ''Tabernaemontana divaricata'', also known as pinwheel flower * Pinwheel tilings, aperiodic tilings of the plane whose tiles appear in infinitely many orientations * Catherine wheel (firework), a form of pyrotechnic display device also known as a pinwheel * ''Coenocharopa elegans'', also known as the elegant pinwheel snail, a land snail found in Queensland, Australia * "Pinwheels", a poem by Patti Smith from her 1978 book ''Babel'' * Pinwheel USY, part of United Synagogue Youth covering the Pacific Northwest * Wartenberg wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel (toy)
A pinwheel is a simple child's toy made of a wheel of paper or plastic curls attached at its axle to a stick by a pin. It is designed to spin when blown upon by a person or by the wind. It is a predecessor to more complex whirligigs. History During the nineteenth century in the United States, any wind-driven toy held aloft by a running child was characterized as a whirligig, including pinwheels. Pinwheels provided many children with numerous minutes of enjoyment and amusement. Armenian immigrant toy manufacturers Michael J. Sielaff and Ethan Norof, invented the modern version of the pinwheel, originally titled "wind wheel," in 1919 in Boston, Massachusetts. Daniel Dubay owned a toy store in Stoneham, Massachusetts, sold the wind wheel along with two other toys which he invented. A pinwheel plugged into a wall is called a "fan" See also * List of toys References External links Pioneering DataHow to Make a Pinwheelat wikiHow wikiHow is an online wiki-style publication fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel (cryptography)
In cryptography, a pinwheel was a device for producing a short pseudorandom sequence of bits (determined by the machine's initial settings), as a component in a cipher machine. A pinwheel consisted of a rotating wheel with a certain number of positions on its periphery. Each position had a "pin", "cam" or "lug" which could be either "set" or "unset". As the wheel rotated, each of these pins would in turn affect other parts of the machine, producing a series of "on" or "off" pulses which would repeat after one full rotation of the wheel. If the machine contained more than one wheel, usually their periods would be relatively prime to maximize the combined period. Pinwheels might be turned through a purely mechanical action (as in the M-209) or electromechanically (as in the Lorenz SZ 40/42). Development The Swedish engineer Boris Caesar Wilhelm Hagelin is credited with having invented the first pinwheel device in 1925. He developed the machine while employed by Emanuel Nobel to ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel (shogi)
In shogi, the Pinwheel (風車 ''kazaguruma'') is an uncommon opening with the rook on the bottom rank 9 enabling it to switch between a Ranging Rook and Static Rook attack. The pinwheel name comes from the way the king is able to rotate around the gold positioned on the 58 square as if it were a wheel. Against Static Rook Anaguma Example of development from Habu (1992). 1. P-76 P-84 2. S-68 P-34 3. P-66 S-62 4. R-58 K-42 5. K-48 K-32 6. K-38 B-33 7. P-56 P-54 8. S-48 8... K-22 9. S-66 S-53 10. P-46 L-12 11. P-36 K-11 12. S-47 S-32 13. G-48 P-85 14. B-77 G-52 15. N-37 P-44 16. P-55 16... Px55 17. Rx55 P*54 18. R-59 G-43 19. P-16 P-14 20. P-26 G-31 21. G-78 P-74 22. B-68 P-94 23. P-96 R-72 24. G-77 P-75 25. Px75 Rx75 26. P*76 R-72 Game example A similar position occurs in a 1991 game between Yasuharu Ōyama (Black) and Michio Ariyoshi (White). Itō's Pinwheel variations Bibliography * 羽生 abu 善治 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel (TV Channel)
Nickelodeon (often shortened to Nick) is an American pay television channel which launched on April 1, 1979, as the first cable channel for children. It is run by Paramount Global through its networks division's Kids and Family Group. Its programming is primarily aimed at children aged 2–17, along with a broader family audience through its program blocks. The channel began life as a test broadcast on December 1, 1977 as part of QUBE, an early cable television system broadcast locally in Columbus, Ohio. The channel, now named Nickelodeon, launched to a new countrywide audience on April 1, 1979, with ''Pinwheel'' as its inaugural program. The network was initially commercial-free and remained without advertising until 1984. Throughout history, Nickelodeon has introduced several sister channels and programming blocks. Nick Jr. is a preschool morning block launched on January 4, 1988. Nicktoons, based on the flagship brand, launched as a separate sister channel in 2002. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel (TV Series)
Pinwheel may refer to: * Pinwheel (toy), a spinning children's toy * Pinwheel (cryptography), a device for producing a short pseudo-random sequence of bits * Pinwheel (shogi), an opening in the game shogi or Japanese chess * Pinwheel (TV channel), a channel which would later turn into Nickelodeon * ''Pinwheel'' (TV series), a children's show on Nickelodeon that ran from 1977 to 1984 * Pinwheel calculator (part of), a type of early mechanical arithmetic machine * ''Tabernaemontana divaricata'', also known as pinwheel flower * Pinwheel tilings, aperiodic tilings of the plane whose tiles appear in infinitely many orientations * Catherine wheel (firework), a form of pyrotechnic display device also known as a pinwheel * ''Coenocharopa elegans'', also known as the elegant pinwheel snail, a land snail found in Queensland, Australia * "Pinwheels", a poem by Patti Smith from her 1978 book ''Babel'' * Pinwheel USY, part of United Synagogue Youth covering the Pacific Northwest * Wartenberg wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel Calculator
A pinwheel calculator is a class of mechanical calculator described as early as 1685, and popular in the 19th and 20th century, calculating via wheels whose number of teeth were adjustable. These wheels, also called pinwheels, could be set by using a side lever which could expose anywhere from 0 to 9 teeth, and therefore when coupled to a counter they could, at each rotation, add a number from 0 to 9 to the result. By linking these wheels with carry mechanisms a new kind of calculator engine was invented. Turn the wheels one way and one performs an addition, the other way a subtraction. As part of a redesign of the arithmometer, they reduced by an order of magnitude the cost and the size of mechanical calculators on which one could easily do the four basic operations (add, subtract, multiply and divide). Pinwheel calculators became extremely popular with the success of Thomas' Arithmometer (manufactured 1850s) and Odhner Arithmometer (manufactured 1890s). History * - In "M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabernaemontana Divaricata
''Tabernaemontana divaricata'', commonly called pinwheel flower, crape jasmine, East India rosebay, and Nero's crown, is an evergreen shrub or small tree native to South Asia, Southeast Asia and China. In zones where it is not hardy it is grown as a house/glasshouse plant for its attractive flowers and foliage. The stem exudes a milky latex when broken, whence the name milk flower. Description The plant generally grows to a height of and is dichotomously branched. The large shiny leaves are deep green and about in length and in width. The waxy blossoms are found in small clusters on the stem tips. The (single) flowers have the characteristic 'pinwheel' shape also seen in other genera in the family Apocynaceae such as ''Vinca'' and ''Nerium''. Both single and double-flowered forms are cultivated, the flowers of both forms being white. The plant blooms in spring but flowers appear sporadically all year. The flowers have a pleasing fragrance. More than 66 alkaloids are found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinwheel Tiling
In geometry, pinwheel tilings are non-periodic tilings defined by Charles Radin and based on a construction due to John Conway. They are the first known non-periodic tilings to each have the property that their tiles appear in infinitely many orientations. Conway's tessellation 250px, Conway's triangle decomposition into smaller similar triangles. Let T be the right triangle with side length 1, 2 and \sqrt. Conway noticed that T can be divided in five isometric copies of its image by the dilation of factor 1/\sqrt. 250px, The increasing sequence of triangles which defines Conway's tiling of the plane. By suitably rescaling and translating/rotating, this operation can be iterated to obtain an infinite increasing sequence of growing triangles all made of isometric copies of T. The union of all these triangles yields a tiling of the whole plane by isometric copies of T. In this tiling, isometric copies of T appear in infinitely many orientations (this is due to the angles \arc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catherine Wheel (firework)
The Catherine wheel or pinwheel is a type of firework consisting either of a powder-filled spiral tube, or an angled rocket mounted with a pin through its center. When ignited, the energy of the fireworks not only create sparks and flame, but cause the wheel to quickly rotate, making the display much more spectacular. The physics of the process are those of an aeolipile. The firework is named after Saint Catherine of Alexandria who, according to Christian tradition, was condemned to death by “breaking on the wheel”. When she touched the wheel it miraculously fell to pieces. The largest Catherine wheel ever made was designed by the Lily Fireworks Factory of Mqabba, Malta. The Catherine wheel had a diameter of , and was lit on 18 June 2011, the eve of the annual feast of ''Our Lady of the Lilies''. In Malta, Catherine wheels are a traditional fixture during every village 'festa'. Some villages even hold competitions on the eve of the parish feast, while others display the va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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