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A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe.
History of the bicycle. 1886 Swift Safety Bicycle. Vehicles that have two wheels and require balancing by the rider date back to the early 19th century. The first means of transport making use of two wheels arranged consecutively, and thus the archetype of the bicycle, was the German draisine dating back to 1817.
Cycling. European city bike. Children riding a bike in Ghana. Cycling, [1] also known as bicycling[2] or biking, [3] is the activity of riding a bicycle or other type of cycle. It encompasses the use of human-powered vehicles such as balance bikes, unicycles, tricycles, and quadricycles.
A lugged steel bicycle has a frame made of steel. An aluminium bicycle has a frame made of aluminium alloys. A plastic bicycle was an attempt in the early 1980s to introduce a bicycle made entirely out of plastic materials instead of metal. A wooden bicycle has a frame made out of wood.
The main members of the Brazilian imperial family in 1875 The family of Finnish statesman J. K. Paasikivi (right) in 1906. The system emphasizes the nuclear family. Members of the nuclear family use highly descriptive kinship terms, identifying directly only the husband, wife, mother, father, son, daughter, brother, and sister.
Dutch woman cycling with two young children, using a two-wheeled box-bike. The following outline is provided as an overview of and topical guide to cycling: . Cycling, also called bicycling or biking, is the activity of using / riding bicycles, (at least partially) human-powered, wheeled vehicles (typically by foot pedalling), [1] for purposes including transport, recreation, social ...
Program of cycling races, August 1871, Mons, Belgium. The first documented cycling race was a 1,200 metre race held on May 31, 1868, at the Park of Saint-Cloud, Paris. It was won by expatriate Englishman James Moore who rode a bicycle with solid rubber tires. [3] The first cycle race covering a distance between two cities was Paris–Rouen ...
The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle and a paired rear triangle. This is known as the diamond frame. [1] Frames are required to be strong, stiff and light, which they do by combining different materials and shapes.