Wheel

A wheel is a circular component that is intended to rotate on an axle bearing. The wheel is one of the main components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a ship's wheel, steering wheel, potter's wheel and flywheel.

Common examples are found in transport applications. A wheel greatly reduces friction by facilitating motion by rolling together with the use of axles. In order for wheels to rotate, a moment needs to be applied to the wheel about its axis, either by way of gravity, or by the application of another external force or torque.

Etymology

The English word wheel comes from the Old English word hweol, hweogol, from Proto-Germanic *hwehwlan, *hwegwlan, from Proto-Indo-European *k^wek^wlo-, an extended form of the root *k^wel- "to revolve, move around". Cognates within Indo-European include Icelandic hjól "wheel, tyre", Greek κύκλος kúklos, and Sanskrit chakra, the latter both meaning "circle" or "wheel".

Wheels (disambiguation)

Wheels is the plural of wheel.

Wheels or WHEELS can also refer to:

Arts and entertainment

Music

Songs

Other

Transportation-related

Cake (band)

Cake (stylized CAKE) is an American alternative rock band from Sacramento, California. Consisting of singer John McCrea, trumpeter Vince DiFiore, guitarist Xan McCurdy, bassist Gabe Nelson and drummer Paulo Baldi, the band has been noted for McCrea's sarcastic lyrics and deadpan voice, DiFiore's trumpet parts, and their wide-ranging musical influences, including country music, Mariachi, rock, funk, Iranian folk music and hip hop.

Cake was formed in 1991 by McCrea, DiFiore, Greg Brown, Frank French and Sean McFessel, who soon left and was replaced by Nelson. Following the self-release of its debut album, Motorcade of Generosity, the band was signed to Capricorn Records in 1995 and released its first single, "Rock 'n' Roll Lifestyle", which hit number 35 on the Modern Rock Tracks music chart and was featured on MTV's 120 Minutes; French and Nelson then left the band, and were replaced by Todd Roper and Victor Damiani. Cake's second album, 1996's Fashion Nugget, went platinum on the strength of its lead single, "The Distance". Following a tour of Europe and the United States, both Brown and Damiani announced they were leaving Cake, which led to speculation about the band's future; McCrea eventually recruited Xan McCurdy to take over on guitar, and persuaded Nelson to return.

Poly(hydridocarbyne)

Poly(hydridocarbyne) (PHC) is one of a class of carbon-based random network polymers primarily composed of tetrahedrally hybridized carbon atoms, each having one hydride substituent, exhibiting the generic formula [HC]n. PHC is made from bromoform, a liquid halocarbon that is commercially manufactured from methane. At room temperature, poly(hydridocarbyne) is a dark brown powder. It can be easily dissolved in a number of solvents (tetrahydrofuran, ether, toluene etc.), forming a colloidal suspension that is clear and non-viscous, which may then be deposited as a film or coating on various substrates. Upon thermolysis in argon at atmospheric pressure and temperatures of 110 °C to 1000 °C, decomposition of poly(hydridocarbyne) results in hexagonal diamond (Lonsdaleite).

More recently poly(hydridocarbyne) has been synthesized by a much simpler method using electrolysis of chloroform (May 2008) and hexachloroethane (June 2009).

The novelty of PHC (and its related polymer poly(methylsilyne)) is that the polymer may be readily fabricated into various forms (e.g. films, fibers, plates) and then thermolized into a final hexagonal diamond ceramic.

Poly Property

Poly Property Group Co., Limited (SEHK: 119), is a property developer in China, with its major businesses include property development, investment and management. It mainly develops mid to high-end residential and commercial properties in the cities along Yangtze River Delta and Pearl River Delta as well as the second-tier provincial capitals. Its chairman is He Ping, the son-in-law of the late Deng Xiaoping.

Poly (Hong Kong) Investments was established in 1973, originally a shipping company called Haikang Investment Limited. In 1993, China Poly Group Corporation acquired 55% stake in the company and converted its business from shipping to conglomerate. In 2005, Haiking Investment was renamed to Poly (Hong Kong) Investments.

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Polymorphic Systems (computers)

PolyMorphic Systems was a manufacturer of microcomputer boards and systems based on the S-100 bus. Their products included the Poly-88 and the System 8813. The company was incorporated in California in 1976 as Interactive Products Corporation d/b/a PolyMorphic Systems. It was initially based in Goleta, then Santa Barbara, California.

S-100 boards

PolyMorphic Systems' first products were several interface boards based on the then-popular S-100 bus. These were compatible with other microcomputers such as the Altair 8800 and IMSAI 8080. The first was an A/D and D/A converter board. This was followed by a video terminal interface (VTI) card which became the primary display device for their systems. Later board-level products included CPU, RAM, and disk controller cards.

Poly-88

With the release of their CPU card, PolyMorphic began selling complete systems. Their first was the Poly-88, housed in a 5-slot S100 chassis, with additional side-mounted S-100 connectors for the purpose of joining chassis together. This unit earned the nickname "orange toaster" due to its orange metal cover, and the fact that the S-100 cards generated noticeable heat. The Poly-88 was available in kit form, or assembled. It was originally called the Micro-Altair, but after objections from MITS, manufacturers of the Altair, the name was changed.