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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 ...
Madura English–Sinhala Dictionary (Sinhala: මධුර ඉංග්රීසි–සිංහල ...
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Science fiction (sometimes shortened to sci-fi or abbreviated SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel universes, and extraterrestrial life.
"A science fiction story is a story built around human beings, with a human problem, and a human solution, which would not have happened at all without its scientific content." [13] Basil Davenport. 1955. "Science fiction is fiction based upon some imagined development of science, or upon the extrapolation of a tendency in society." [14] Edmund ...
While science fiction is a unique genre of fiction unto itself, it is also sometimes used as an umbrella term for a variety of distinct non-realistic or speculative fiction genres, most particularly fantasy. Conversely, speculative fiction is sometimes used as the umbrella term for SF, fantasy, Magic realism, horror, etc.
Snow Crash is a science fiction novel by the American writer Neal Stephenson, published in 1992.Like many of Stephenson's novels, its themes include history, linguistics, anthropology, archaeology, religion, computer science, politics, cryptography, memetics, and philosophy.
The Malloy Hoverbike, an early hoverbike, undergoing tethered hover testing in 2010. A hoverbike (or hovercycle) is a vehicle that can hover, resembling a flying motorbike, having at least two propulsive portions—one in front of and one behind the driver.