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  2. Tipler cylinder - Wikipedia

    en.wikipedia.org/wiki/Tipler_cylinder

    A Tipler cylinder, also called a Tipler time machine, is a hypothetical object theorized to be a potential mode of time travel —although results have shown that a Tipler cylinder could only allow time travel if its length were infinite or with the existence of negative energy.

  3. 6 Things to Know to Get the Most Out of Your Mammogram ...

    www.aol.com/6-things-know-most-mammogram...

    Outside of your travel time and perhaps filling out some paperwork and waiting at the facility, the actual mammogram doesn't take much time — "if you follow directions," Dr. Pero jokes.

  4. A Switch in Time - Wikipedia

    en.wikipedia.org/wiki/A_Switch_in_Time

    A Switch in Time [6] [7] is a 1988 Canadian science-fiction comedy film written and directed by Paul Donovan, starring Tom McCamus, Lori Paton, Jacques Lussier and David Hemblen. It follows Norman, Umberto and Erica, a trio of accidental time travelers who attempt to rebuild their life in early Christian times during the Roman Empire 's ...

  5. Quantum mechanics of time travel - Wikipedia

    en.wikipedia.org/wiki/Quantum_mechanics_of_time...

    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][4] In the 1980s, Igor Novikov proposed the self-consistency principle. [5] According to this principle, any changes made by ...

  6. Synchronicity (film) - Wikipedia

    en.wikipedia.org/wiki/Synchronicity_(film)

    Running time. 100 minutes. Country. United States. Language. English. Synchronicity is a 2015 American science fiction film written, directed, and edited by Jacob Gentry. It stars Chad McKnight, A. J. Bowen, Brianne Davis, Scott Poythress, and Michael Ironside. McKnight plays a physicist who invents a time machine and becomes suspicious that ...

  7. The 35 Best Books About Time Travel - AOL

    www.aol.com/lifestyle/35-best-books-time-travel...

    Mistaken for a lady's maid, Kendra is forced to quickly adapt to the period as she figures out how to get back to her own timeline. There are five books in the Kendra Donovan series, so if you ...

  8. Time travel - Wikipedia

    en.wikipedia.org/wiki/Time_travel

    The first page of The Time Machine published by Heinemann. Time travel is the hypothetical activity of traveling into the past or future. 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.

  9. Chronology protection conjecture - Wikipedia

    en.wikipedia.org/wiki/Chronology_protection...

    Chronology protection conjecture. The chronology protection conjecture is a hypothesis first proposed by Stephen Hawking that laws of physics beyond those of standard general relativity prevent time travel on all but microscopic scales—even when the latter theory states that it should be possible (such as in scenarios where faster than light ...

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