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Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction


Marcelo
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Greetings,

 

Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction

 

Paul J. Nahin.

 

Question: Do you read and have any commentaries on this book or any texts about or of this book, which you could to share with me/us? Is it really a good book? I don't read it yet...;P

 

Sorry for my bad English, please... I do not speak/write your language very well...

 

Hugs :),

 

Marcelo.

 

------------

 

Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction

 

Paul J. Nahin P. J. Nahin

 

Format: Hardcover, 2nd ed., 628pp.

 

ABOUT THIS ITEM

 

From The Publisher

 

"Time Machines" takes readers on an exhilarating journey through the intriguing theories of scientists and the far-flung imaginations of writers. It explores the ideas of time travel from the first account in English literature to the latest theories of physicists such as Kip Thorne and Igor Novikov. 75 illus.

 

FROM THE BOOK

 

Table of Contents

 

A Sample of Things to Come

 

Foreword

 

What's New in the Second Edition

 

Prologue to the First Edition

 

Acknowledgments to the First Edition

 

Ch. 1 An Overview of Time Travel 1

 

The Mystery of Time Travel 1

 

Machineless Time Travel Without Dreams or Drugs 13

 

Time Travel by Machine 18

 

H. G. Wells - Why His Time Machine Won't Work 22

 

Traveling to the Future 25

 

Traveling to the Past 30

 

Who Else Might Be Interested in Time Travel 35

 

Some Problems 40

 

Backward in Time - Can It Really Be Done? 43

 

The Problem of Paradoxes 47

 

The Fictional Origins of "Change the Past" 54

 

Ways to Avoid Paradoxes 57

 

Where Are All the Time Travelers? 66

 

Skepticism and Time Travelers 72

 

Einstein, Godel, and the Past 79

 

Quantum Mechanics, Black Holes, Singularities, and Time Travel 85

 

Tipler's Time Machine 92

 

Ch. 2 On the Nature of Time, Spacetime, and the Fourth Dimension 97

 

What Is Time? 98

 

Speculations on the Reality of Time 102

 

Has the Past Been for Ever? 109

 

Time and Clocks 115

 

Hyperspace and Wormholes 117

 

Monsters in Hyperspace 125

 

Space as the Fourth Dimension 130

 

Time as the Fourth Dimension 140

 

H. G. Wells on Space and Time 143

 

Spacetime and the Fourth Dimension 148

 

Spacetime, Omniscience, and Free Will 161

 

Does the Future Already Exist? Is the Past Still Around? 170

 

Ch. 3 The Arrows of Time 179

 

The Language of Time Travel 180

 

Does Time Have a Direction? 181

 

Cause and Effect 185

 

Backward Causation 191

 

What Does "Now" Mean? 198

 

Irreversibility 205

 

Worlds in Reverse 208

 

The Philosophy and Physics of Reversed Time 220

 

Entropy as Time's Arrow 227

 

Other Arrows of Time 236

 

Multidimensional Time 240

 

Ch. 4 Time Travel Paradoxes and (Some of) Their Explanations 245

 

Paradoxes 246

 

Early Science Fiction Speculations on Time Travel Paradoxes 251

 

Two Basic Time Travel Paradoxes 256

 

Can the Present Change the Past? Can the Past Be Un-Done? 259

 

Changing the Past vs. Affecting It 269

 

Why Can't a Time Traveler Kill His Grandfather? 285

 

Quantum Mechanics and Time Travel 294

 

Causal Loops 304

 

Sexual Paradoxes 319

 

Maxwell's Equations and Advanced Effects 323

 

Communication with the Past 327

 

Wheeler and Feynman and Their Bilking Paradox 332

 

Absorber Theory and Signaling to the Past 336

 

Tachyonic Signals, Spooky Actions, and the Bell Antitelephone 342

 

Epilogue 355

 

Notes and References 367

 

Tech Notes

 

1 What Time Is Now? 415

 

2 Time Dilation via the Photon Clock 423

 

3 The Lorentz Transformation 429

 

4 Spacetime Diagrams, Light Cones, Metrics, and Invariant Intervals 439

 

5 Proper Time, Curved World Lines, and the Twin Paradox 459

 

6 A High-Speed Rocket Is a One-Way Time Machine to the Future 467

 

7 Superluminal Speeds, Backward Time Travel, and Warp Drives, or Faster-Than-Light Into the Past 475

 

8 Backward Time Travel According to Godel and Tipler 489

 

9 Wormhole Time Machines 497

 

10 "Solving" the Einstein Gravitational Field Equations, Unphysical Mass-Energy, and the Cosmic String Time Machine 527

 

11 Time and Gravity 537

 

Glossary of Important Terms and Concepts 545

 

Bibliography 557

 

Bibliographic Adieu 618

 

Index

 

 

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To hear a pre-recorded "live interview" with Mr. Gibbs, (available in Real Player, or Win98 Media Player format)...Please visit the following address:] http://216.216.113.77/topics.html

 

6/27/00 - Tue/Wed

 

Guest: Steve Gibbs

 

Has build a time machine he calls the Hyper Dimensional Resonator.

 

------------------

 

"Everything you know,...is Wrong!

 

soon we shall all discover the truth."

 

p)'i4q4

 

 

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