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  2. Tachyon - Wikipedia

    en.wikipedia.org/wiki/Tachyon

    Spacetime diagram showing that moving faster than light implies time travel in the context of special relativity. A spaceship departs from Earth from A to C slower than light. At B, Earth emits a tachyon, which travels faster than light but forward in time in Earth's reference frame. It reaches the spaceship at C.

  3. Faster-than-light - Wikipedia

    en.wikipedia.org/wiki/Faster-than-light

    Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light in vacuum (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.

  4. Faster than the speed of light (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Faster_than_the_speed_of...

    Faster-than-light travel and communication Superluminal motion, faster-than-light motion; Superluminal communication, faster-than-light communication; FTL: Faster Than Light, a 2012 indie roguelike video game; Faster Than the Speed of Light: The Story of a Scientific Speculation, a book by João Magueijo "Faster Than the Speed of Light", a song ...

  5. Superluminal communication - Wikipedia

    en.wikipedia.org/wiki/Superluminal_communication

    The limitations of phase velocity beyond the speed of light later led him to develop his Dirac communicator. Larry Niven used hyperwave in his Known Space series as the term for a faster-than-light method of communication. Unlike the hyperdrive that moved ships at a finite superluminal speed, hyperwave was essentially instantaneous.

  6. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    Another quantum effect that predicts the occurrence of faster-than-light speeds is called the Hartman effect: under certain conditions the time needed for a virtual particle to tunnel through a barrier is constant, regardless of the thickness of the barrier. [50] [51] This could result in a virtual particle crossing a large gap faster than ...

  7. The best sunrise alarm clocks of 2025 - AOL

    www.aol.com/lifestyle/best-sunrise-alarm-clocks...

    Sunrise alarm clocks may have different features but all work in a similar way: a light fixture in the device turns on and slowly begins brightening over the course of an interval of time until ...

  8. 10 weird things that can kill you almost instantly - AOL

    www.aol.com/news/2016-03-13-10-weird-things-that...

    When that happens, the fish immediately release venom into whatever disturbed it. Effects are fast acting and can include heart stoppage, seizures, and paralysis. Number 8.Cleaning the toilet. No ...

  9. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!