Paradoxes of Time Travel

Paradoxes of Time Travel PDF Author: Ryan Wasserman
Publisher: Oxford University Press
ISBN: 0198793332
Category : Philosophy
Languages : en
Pages : 261

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Book Description
Ryan Wasserman explores a range of fascinating puzzles raised by the possibility of time travel, with entertaining examples from physics, science fiction, and popular culture, and he draws out their implications for our understanding of time, tense, freedom, fatalism, causation, counterfactuals, laws of nature, persistence, change, and mereology.

Paradoxes of Time Travel

Paradoxes of Time Travel PDF Author: Ryan Wasserman
Publisher: Oxford University Press
ISBN: 0198793332
Category : Philosophy
Languages : en
Pages : 261

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Book Description
Ryan Wasserman explores a range of fascinating puzzles raised by the possibility of time travel, with entertaining examples from physics, science fiction, and popular culture, and he draws out their implications for our understanding of time, tense, freedom, fatalism, causation, counterfactuals, laws of nature, persistence, change, and mereology.

Time Travel and Warp Drives

Time Travel and Warp Drives PDF Author: Allen Everett
Publisher: University of Chicago Press
ISBN: 0226224988
Category : Space and time
Languages : en
Pages : 282

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Book Description
Presents the current understanding of the nature of time and space, and an approachable explanation of Einstein's theory of special relativity; then goes on to connect these to possible time travel along with the accompanying paradoxes involved.

A Time Traveler's Theory of Relativity

A Time Traveler's Theory of Relativity PDF Author: Nicole Valentine
Publisher: Carolrhoda Books ®
ISBN: 1541564472
Category : Juvenile Fiction
Languages : en
Pages : 267

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Book Description
He believes in science, but only magic can help his mom. Twelve-year-old Finn is used to people in his family disappearing. His twin sister, Faith, drowned when they were three years old. A few months ago, his mom abandoned him and his dad with no explanation. Finn clings to the concrete facts in his physics books—and to his best friend, Gabi—to ward off his sadness. But then his grandmother tells him a secret: the women in their family are Travelers, able to move back and forth in time. Finn's mom is trapped somewhere in the timeline, and she's left Finn a portal to find her. But to succeed, he'll have to put his trust in something bigger than logic. "This is an incredible book, no matter which time universe you're in. I couldn't put it down. One of my favorite debut novels of the year."—Erin Entrada Kelly, New York Times bestselling author and 2018 Newbery Medal winner

Time Travel and Other Mathematical Bewilderments

Time Travel and Other Mathematical Bewilderments PDF Author: Martin Gardner
Publisher: American Mathematical Soc.
ISBN: 1470463652
Category : Mathematics
Languages : en
Pages : 297

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Book Description
Martin Gardner's Mathematical Games columns in Scientific American inspired and entertained several generations of mathematicians and scientists. Gardner in his crystal-clear prose illuminated corners of mathematics, especially recreational mathematics, that most people had no idea existed. His playful spirit and inquisitive nature invite the reader into an exploration of beautiful mathematical ideas along with him. These columns were both a revelation and a gift when he wrote them; no one--before Gardner--had written about mathematics like this. They continue to be a marvel. This is the original 1988 edition and contains columns published from 1974-1976.

How Physics Makes Us Free

How Physics Makes Us Free PDF Author: J. T. Ismael
Publisher: Oxford University Press
ISBN: 0190269456
Category : Philosophy
Languages : en
Pages : 289

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Book Description
In 1687 Isaac Newton ushered in a new scientific era in which laws of nature could be used to predict the movements of matter with almost perfect precision. Newton's physics also posed a profound challenge to our self-understanding, however, for the very same laws that keep airplanes in the air and rivers flowing downhill tell us that it is in principle possible to predict what each of us will do every second of our entire lives, given the early conditions of the universe. Can it really be that even while you toss and turn late at night in the throes of an important decision and it seems like the scales of fate hang in the balance, that your decision is a foregone conclusion? Can it really be that everything you have done and everything you ever will do is determined by facts that were in place long before you were born? This problem is one of the staples of philosophical discussion. It is discussed by everyone from freshman in their first philosophy class, to theoretical physicists in bars after conferences. And yet there is no topic that remains more unsettling, and less well understood. If you want to get behind the façade, past the bare statement of determinism, and really try to understand what physics is telling us in its own terms, read this book. The problem of free will raises all kinds of questions. What does it mean to make a decision, and what does it mean to say that our actions are determined? What are laws of nature? What are causes? What sorts of things are we, when viewed through the lenses of physics, and how do we fit into the natural order? Ismael provides a deeply informed account of what physics tells us about ourselves. The result is a vision that is abstract, alien, illuminating, and-Ismael argues-affirmative of most of what we all believe about our own freedom. Written in a jargon-free style, How Physics Makes Us Free provides an accessible and innovative take on a central question of human existence.

Time Travel in Einstein's Universe

Time Travel in Einstein's Universe PDF Author: J. Richard Gott
Publisher: HMH
ISBN: 0547526571
Category : Science
Languages : en
Pages : 307

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Book Description
A Princeton astrophysicist explores whether journeying to the past or future is scientifically possible in this “intriguing” volume (Neil deGrasse Tyson). It was H. G. Wells who coined the term “time machine”—but the concept of time travel, both forward and backward, has always provoked fascination and yearning. It has mostly been dismissed as an impossibility in the world of physics; yet theories posited by Einstein, and advanced by scientists including Stephen Hawking and Kip Thorne, suggest that the phenomenon could actually occur. Building on these ideas, J. Richard Gott, a professor who has written on the subject for Scientific American, Time, and other publications, describes how travel to the future is not only possible but has already happened—and contemplates whether travel to the past is also conceivable. This look at the surprising facts behind the science fiction of time travel “deserves the attention of anyone wanting wider intellectual horizons” (Booklist). “Impressively clear language. Practical tips for chrononauts on their options for travel and the contingencies to prepare for make everything sound bizarrely plausible. Gott clearly enjoys his subject and his excitement and humor are contagious; this book is a delight to read.” —Publishers Weekly

How to Build a Time Machine

How to Build a Time Machine PDF Author: Paul Davies
Publisher: Penguin UK
ISBN: 014193042X
Category : Science
Languages : en
Pages : 143

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Book Description
Inspired at an impressionable age by the work of science fiction writers H.G.Wells and Arthur C Clarke, Paul Davies has thought long and hard about ways to travel in time. Here, the best-selling popular science writer finally reveals how it can be done - without breaking the laws of physics and without causing any earth-shattering paradoxes. Since time is money, time travel is a costly business. But with the help of a handy black hole, or better a wormhole, and a bit of luck, Davies's guide illustrates how this new mode of travel could yet be a viable option. "An entertaining tour around a fascinating topic, conducted by a world-class physicist" - SUNDAY TELEGRAPH

The Best Time Travel Stories of the 20th Century

The Best Time Travel Stories of the 20th Century PDF Author: Harry Turtledove
Publisher: Del Rey
ISBN: 0345481909
Category : Fiction
Languages : en
Pages : 450

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Book Description
LEAP INTO THE FUTURE, AND SHOOT BACK TO THE PAST H. G. Wells’s seminal short story “The Time Machine,” published in 1895, provided the springboard for modern science fiction’s time travel explosion. Responding to their own fascination with the subject, the greatest visionary writers of the twentieth century penned some of their finest stories. Here are eighteen of the most exciting tales ever told, including “Time’s Arrow” In Arthur C. Clarke’s classic, two brilliant physicists finally crack the mystery of time travel—with appalling consequences. “Death Ship” Richard Matheson, author of Somewhere in Time, unveils a chilling scenario concerning three astronauts who stumble upon the conundrum of past and future. “Yesterday was Monday” If all the world’s a stage, Theodore Sturgeon’s compelling tale follows the odyssey of an ordinary joe who winds up backstage. “Rainbird” R.A. Lafferty reflects on what might have been in this brainteaser about an inventor so brilliant that he invents himself right out of existence. “Timetipping” What if everyone time-traveled except you? Jack Dann provides some surprising answers in this literary gem. . . . as well as stories by Poul Anderson • L. Sprague de Camp • Joe Haldeman • John Kessel • Nancy Kress • Henry Kuttner • Ursula K. Le Guin • Larry Niven • Charles Sheffield • Robert Silverberg • Connie Willis By turns frightening, puzzling, and fantastic, these stories engage us in situations that may one day break free of the bonds of fantasy . . . to enter the realm of the future: our future. Note: "A Sound of Thunder" by Ray Bradbury and "I'm Scared" by Jack Finney are not included in this edition.

Quantum Physics of Time Travel

Quantum Physics of Time Travel PDF Author: Joseph Gabriel
Publisher: Cosmology Science Publishers
ISBN: 9781938024221
Category : Science
Languages : en
Pages : 234

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Book Description
Table of Contents 1: The Time Machine of Past Present and Future 2: Time Is Relative: Future, Past, Present Overlap and Exist Simultaneously 3: Time Dilation And The Contraction of Space Time 4: Twins, Time Travel, Gravity And Aging 5: Time Travel And Aging: Clocks, Gravity, Altitude, Longitude & Longevity 6: Acceleration, Light Speed, Time Travel, G-Forces And Fuel 7: The Curvature of Space-Time: Gravity and the Bending of Light and Time 8: The Circle of Time: In A Rotating Universe The Future Leads to the Past 9: Time Travel Through Black Holes in the Fabric of Space-Time 10: Microscopic Time Travel At the Speed of Light 11: "Worm Holes" In Extreme Curvatures of Space Time 12: Worm Holes, Negative Energy, Casimir Force And The Einstein-Rosen Bridge 13: Black Holes And Gravitational Sling Shots 14. The Time Traveler in Miniature: Negative Mass and Energy 15: Tachyons, Negative Energy, The Circle of Time: From the Future to the Past 16. Duality: The Past And Future In Parallel 17: The Mirror of Time: Red Shift, Blue Shifts and Duality 18. Into the Past: Duality, Anti-Matter and Conservation of Energy 19: Quantum Entanglement And Causality: The Future Effects the Past 20: Light, Wave Functions and the Uncertainty Principle: Changing the Future and the Past 21: Paradoxes of Time Travel and the Multiple Worlds of Quantum Physics 22. Epilogue: A Journey Though The Many Worlds of Time 23: References

A Time Travel Dialogue

A Time Travel Dialogue PDF Author: John W. Carroll
Publisher: Open Book Publishers
ISBN: 178374037X
Category : Science
Languages : en
Pages : 98

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Book Description
Is time travel just a confusing plot device deployed by science fiction authors and Hollywood filmmakers to amaze and amuse? Or might empirical data prompt a scientific hypothesis of time travel? Structured on a fascinating dialogue involving a distinguished physicist, Dr. Rufus, a physics graduate student and a computer scientist this book probes an experimentally supported hypothesis of backwards time travel – and in so doing addresses key metaphysical issues, such as causation, identity over time and free will. The setting is the Jefferson National Laboratory during a period of five days in 2010. Dr. Rufus’s experimental search for the psi-lepton and the resulting intractable data spurs the discussion on time travel. She and her two colleagues are pushed by their observations to address the grandfather paradox and other puzzles about backwards causation, with attention also given to causal loops, multi-dimensional time, and the prospect that only the present exists. Sensible solutions to the main puzzles emerge, ultimately advancing the case for time travel really being possible. A Time Travel Dialogue addresses the possibility of time travel, approaching familiar paradoxes in a rigorous, engaging, and fun manner. It follows in the long philosophical tradition of using dialogue to present philosophical ideas and arguments, but is ground breaking in its use of the dialogue format to introduce readers to the metaphysics of time travel, and is also distinctive in its use of lab results to drive philosophical analysis. The discussion of data that might decide whether time is one-dimensional (one timeline) or multi-dimensional (branching time) is especially novel.