Yamaha-frame bike with scuba tank makes Dyson shortlist

(Phys.org)—Look what an Australian designer would like us to roll with in a no-emissions future: A motorcycle powered by nothing but air. Adding to a growing portfolio of ideas centered around compressed-air engines, this ...

Ford concept E-Bike has smartphone built in

(PhysOrg.com) -- Ford Motor Company has been showing of its concept E-Bike at the Frankfort auto show. Though the company says it’s isn’t likely to actually sell the bike, it does offer some striking features. For ...

Toyota comissions a Prius bike

(PhysOrg.com) -- The Toyota Prius is coming up on its 10-year anniversary and in order to celebrate the company has chosen an unusual route; they have commissioned the creation of a bicycle. The bike, which is being created ...

Bamboo bikes are export success for Ghana

The sight of tall, green bamboo stalks swaying above the dusty lands of his west African country led Ibrahim Djan Nyampong to an unusual conclusion: bicycles.

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Bicycle

A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist.

Bicycles were introduced in the 19th century and now number about one billion worldwide, twice as many as automobiles. They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for such uses as children's toys, adult fitness, military and police applications, courier services and bicycle racing.

The basic shape and configuration of a typical upright bicycle has changed little since the first chain-driven model was developed around 1885. However, many details have been improved, especially since the advent of modern materials and computer-aided design. These have allowed for a proliferation of specialized designs for particular types of cycling.

The invention of the bicycle has had an enormous impact on society, both in terms of culture and of advancing modern industrial methods. Several components that eventually played a key role in the development of the automobile were originally invented for the bicycle, including ball bearings, pneumatic tires, chain-driven sprockets, and spoke-tensioned wheels.

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