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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. By the early 21st century there were more ...
Video of a recreational cycling ride in Alabama In many countries, the most commonly used vehicle for road transport is a utility bicycle . These have frames with relaxed geometry, protecting the rider from shocks of the road and easing steering at low speeds.
Age of the Earth – Aluminum cycle – Arsenic cycle – Boron cycle – Bromine cycle – Cadmium cycle – Calcium cycle – Carbonate–silicate cycle – Chlorine cycle – Chromium cycle – Climate change – Copper cycle – Cycle of erosion – Dynamic topography – Dynamic topography – Earthquake cycle – Fluorine cycle – Glaciation – Gold cycle – Iodine cycle – Iron ...
MPEG-4 Part 14, or MP4, is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats , it allows streaming over the Internet .
Charge cycle, charging and discharging a rechargeable battery; Thermodynamic cycle, a sequence of processes that transfer heat and work into and out of a system; Wave cycle, the repeatable part of a periodic wave; Cyclic, a primary flight control for helicopters; Cyclic compound; Cycle in cycle per second, which is a unit of frequency (rate of ...
A wooden balance bike. A balance bike (or run bike) is a bicycle without pedals that learners propel by pushing their feet against the ground. [1] By allowing children to focus on developing their sense of balance and coordination before introducing pedalling, balance bikes enable independent riding more quickly than training wheels.
This mountain bicycle features oversized tires, a full-suspension frame, two disc brakes and handlebars oriented perpendicular to the bike's axis. A time trial racing bicycle A Half Wheeler trailer bike at the Golden Gate Bridge Working bicycle in Amsterdam, Netherlands A BMX bike, an example of a bicycle designed for sport A racing upright bicycle A recumbent bicycle Diagram of a bicycle A ...
Aleksandr Vlasov riding a Specialized S-WORKS road bike. Road cycling is the most widespread form of cycling in which cyclists ride on paved roadways. [1] It includes recreational, racing, commuting, and utility cycling.