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Time travel is a widely recognized concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a hypothetical device known as a time machine. The idea of a time machine was popularized by H. G. Wells 's 1895 novel The Time Machine. [ 1]
Time travel in fiction. Time travel is a common theme in fiction, mainly since the late 19th century, and has been depicted in a variety of media, such as literature, television, film, and advertisements. [ 1][ 2] The concept of time travel by mechanical means was popularized in H. G. Wells ' 1895 story, The Time Machine. [ 3][ 4] In general ...
The Time Machine is an 1895 dystopian post-apocalyptic science fiction novella by H. G. Wells about a Victorian scientist known as the Time Traveller who travels approximately 800,806 years into the future. The work is generally credited with the popularization of the concept of time travel by using a vehicle or device to travel purposely and ...
Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers. Dav Pilkey. George Beard and Harold Hutchins, two fourth graders, use a homemade time machine to travel 65 million years into the past. They also travel to 206,784 years in the past and 30 years in the future.
Quantum mechanics of time travel. The theoretical study of time travel generally follows the laws of general relativity. Quantum mechanics requires physicists to solve equations describing how probabilities behave along closed timelike curves (CTCs), theoretical loops in spacetime that might make it possible to travel through time. [ 1][ 2][ 3 ...
Faster-than-light ( superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light ( c ). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster.
Time dilation. Time dilation is the difference in elapsed time as measured by two clocks, either because of a relative velocity between them ( special relativity ), or a difference in gravitational potential between their locations ( general relativity ). When unspecified, "time dilation" usually refers to the effect due to velocity.
A Brief History of Time: From the Big Bang to Black Holes is a book on theoretical cosmology by the physicist Stephen Hawking. It was first published in 1988. Hawking wrote the book for readers who had no prior knowledge of physics. In A Brief History of Time, Hawking writes in non-technical terms about the structure, origin, development and ...