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

Cover......Page Front_0001.djvu
Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction......Page 0004_0001.djvu
Copyright......Page 0005_0001.djvu
A Sample of Things to Come......Page 0008_0001.djvu
Contents......Page 0010_0001.djvu
Prologue......Page 0012_0001.djvu
The Mystery of Time Travel......Page 0020_0001.djvu
Machineless Time Travel Without Dreams or Drugs......Page 0027_0001.djvu
Time Travel by Machine......Page 0030_0001.djvu
H. G. Wells - Why His Time Machine Won't Work......Page 0032_0001.djvu
Traveling to the Future......Page 0035_0001.djvu
Traveling to the Past......Page 0036_0001.djvu
Who Else Might Be Interested in Time Travel......Page 0040_0001.djvu
Some Problems......Page 0043_0001.djvu
Backward in Time - Can It Really Be Done?......Page 0045_0001.djvu
The Problem of Paradoxes......Page 0048_0001.djvu
The Fictional Origins of \"Change the Past\"......Page 0053_0001.djvu
Ways to Avoid Paradoxes......Page 0055_0001.djvu
Where Are All the Time Travelers?......Page 0062_0001.djvu
Skepticism and Time Travelers......Page 0066_0001.djvu
Einstein, Godel, and the Past......Page 0072_0001.djvu
Quantum Mechanics, Black Holes, Singularities, and Time Travel......Page 0077_0001.djvu
Tipler's Time Machine......Page 0081_0001.djvu
What is Time?......Page 0084_0001.djvu
Speculations on the Reality of Time......Page 0088_0001.djvu
Has the Past Been for Ever?......Page 0093_0001.djvu
Time and Clocks......Page 0097_0001.djvu
Hyperspace and Wormholes......Page 0099_0001.djvu
Monsters in Hyperspace......Page 0104_0001.djvu
Space as the Fourth Dimension......Page 0108_0001.djvu
Time as the Fourth Dimension......Page 0115_0001.djvu
H. G. Wells on Space and Time......Page 0117_0001.djvu
Spacetime and the Fourth Dimension......Page 0120_0001.djvu
Spacetime, Omniscience, and Free Will......Page 0131_0001.djvu
The Language of Time Travel......Page 0142_0001.djvu
Does Time Have a Direction?......Page 0144_0001.djvu
Cause and Effect......Page 0146_0001.djvu
What Does \"Now\" Mean?......Page 0155_0001.djvu
Irreversibility......Page 0160_0001.djvu
Worlds in Reverse......Page 0163_0001.djvu
The Philosophy and Physics of Reversed Time......Page 0173_0001.djvu
Entropy as Time's Arrow......Page 0175_0001.djvu
Other Arrows of Time......Page 0181_0001.djvu
Multidimensional Time......Page 0183_0001.djvu
Paradoxes......Page 0186_0001.djvu
Early Science Fiction Speculations on Time-Travel Paradoxes......Page 0189_0001.djvu
Two Basic Time - Travel Paradoxes......Page 0193_0001.djvu
Can the Present Change the Past? Can the Past Be Un-Done?......Page 0195_0001.djvu
Changing vs. Affecting the Past......Page 0202_0001.djvu
Why Can't a Time Traveler Kill His Grandfather?......Page 0212_0001.djvu
Quantum Mechanics and Time Travel......Page 0220_0001.djvu
Causal Loops......Page 0224_0001.djvu
Sexual Paradoxes......Page 0233_0001.djvu
Maxwell's Equations and Advanced Effects......Page 0236_0001.djvu
Communication with the Past......Page 0239_0001.djvu
Wheeler and Feynman and Their Bilking Paradox......Page 0243_0001.djvu
Absorber Theory and Signaling to the Past......Page 0246_0001.djvu
Tachyonic Signals, Spooky Actions, and the Bell Antitelephone......Page 0250_0001.djvu
Epilogue......Page 0260_0001.djvu
Notes and References......Page 0268_0001.djvu
1 What Time Is Now?......Page 0306_0001.djvu
2 Time Dilation via the Photon Clock......Page 0312_0001.djvu
3 The Lorentz Transformation......Page 0316_0001.djvu
4 Spacetime Diagrams, Light Cones, Metrics, and Invariant Intervals......Page 0324_0001.djvu
5 Proper Time, Curved World Lines, and the Twin Paradox......Page 0336_0001.djvu
6 A High-Speed Rocket Is A One-Way Time Machine to the Future......Page 0342_0001.djvu
7 Superluminal Speeds and Backward Time Travel......Page 0348_0001.djvu
8 Backward Time Travel According to Godel and Tipler......Page 0356_0001.djvu
9 The Wormhole Time Machine......Page 0360_0001.djvu
Bibliography......Page 0372_0001.djvu
Index......Page 0422_0001.djvu