From H.G. Wells to Isaac Asimov to Ursula K. Le Guin, time travel has long been a favorite topic and plot device in tales of science fiction and fantasy. But as any true SF fan knows, astounding stories about traversing alternate universes and swimming the tides of time demand plausible science. That’s just what Paul J. Nahin’s guide provides. An engineer, physicist, and published science fiction writer, Nahin is uniquely qualified to explain the ins and outs of how to spin such complex theories as worm holes, singularity, and relativity into scientifically sound fiction. First published in 1997, this fast-paced book discusses the common and not-so-common time-travel devices science fiction writers have used over the years, assesses which would theoretically work and which would not, and provides scientific insight inventive authors can use to find their own way forward or backward in time. From hyperspace and faster-than-light travel to causal loops and the uncertainty principle and beyond, Nahin’s equation-free romp across time will help writers send their characters to the past or future in an entertaining, logical, and scientific way. If you ever wanted to set up the latest and greatest grandfather paradox—or just wanted to know if the time-bending events in the latest pulp you read could ever happen—then this book is for you.

Welcome, intrepid temporal explorers, to the world's first and only field manual/survival guide to time travel!DON'T LEAVE THIS TIME PERIOD WITHOUT IT! Humans from H. G. Wells to Albert Einstein to Bill & Ted have been fascinated by time travel-some say drawn to it like moths to a flame. But in order to travel safely and effectively, newbie travelers need to know the dos and don'ts. Think of this handy little book as the only thing standing between you and an unimaginably horrible death-or being trapped forever in another time or alternate reality. You get: Essential time travel knowledge: Choosing the right time machine, from DeLoreans to hot tubs to phone booths-and beyond What to say-and what NOT to say-to your doppelganger Understanding black holes and Stephen Hawking's term "spaghettification" (no, it's not a method of food preperation; yes, it is a horrifically painful way to meet your end) The connection between Einstein's General Theory of Relativity, traversing wormholes and the 88 mph speed requirement The possible consequences of creating a time paradox-including, but not limited to, the implosion of the universe Survival tips for nearly any sticky time travel situation: How to befriend a dinosaur and subsequently fight other dinosaurs with that dinosaur Instructions to build your very own Rube Goldberg Time Machine Crusading-for fun and profit Tips on battling cowboys, pirates, ninjas, samurai, Nazis, Vikings, robots and space marines How to operate a microwave oven Enjoying the servitude of robots and tips for living underground when they inevitably rise up against us

Image that we have discovered the joys of Time Travel. This book will guide the first time traveler on his/her trip back into the past, giving useful tips and information so your journey won't end badly, because the past can be a very dangerous place to visit. There is information on settling permanently in the past and how to avoid all the strange paradoxes you will encounter along the way. It's a must have book for anyone contemplating the simple joy of TIME TRAVEL

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.

Can you really change the past? And if so, is it dangerous to do so? Should you be worried about the so-called Grandfather Paradox? What about the Butterfly Effect? What do time travellers really need to know? All these questions and more are answered, with examples from popular movies. "M.J." is an avid writer and gamer, co-creator of Multiverser: The Game, and well known for his web site Temporal Anomalies in Popular Time Travel Movies; some of his writings have been translated into French and German. He can be found on Facebook and other social media platforms, and through MJYoung.net, the Christian Gamers Guild, and Patreon. If you've ever watched a time travel film and thought to yourself, "Hey, that's not how it would work!" then this book is for you. While most time travel stories will simply have a character say a few lines of technobabble to handwave away plot holes or logical gaps, in The Essential Guide to Time Travel, Mark Joseph Young explains the leading time travel theories in a logical concise way, then picks apart some of our most loved and cherished time travel films to show how they either make sense or don't (hint, they usually don't). But he doesn't stop there. Young uses the replacement theory to rationalize what had to have happened across multiple unseen timelines in order for what we see on screen to have happened. His analyses also plausibly solve paradoxes that the stories themselves create, thereby saving the universe! The knowledge contained in this book will make you enjoy the time travel genre in new, mind-blowing ways. You'll never just "watch" another time travel movie ever again.

-- By GURPS system designer Steve Jackson, and World Fantasy Award winner John M. Ford. -- Winner of the Origins Award for Best Roleplaying Supplement.

From the ancient humanoids of four billion B.C. to the Kelvan Invasion of the 123rd century, all time stands open for you. All Our Yesterdays is the complete guide to time travel in the world of Star Trek roleplaying. It covers everything from instrumentalities like the Guardian of Forever and the atavachron to techniques such as the slingshot effect and Borg temporal vortices to the rifts in spacetime which snare unwary travelers. Overlays and organizational details make members of the Department of Temporal Investigations, the 29th century Federation Timefleet, and other transtemporal characters ready to play.

The Time Traveler's Guide examines the writing of time travel stories and historical fiction. Books always transport us to other places, especially stories involving time travel or those set in different historical eras. The book examines the definition of time travel and historical fiction, the creation of time machines, methods and devices, selecting historical eras and settings, and creating characters and crafting dialogue. The book also explores common issues with time travel stories, and the importance of research, plausibility, description, and plot, along with writing about time travel into the future, alternate history, and parallel universes. The Time Traveler's Guide is an excellent resource for those writing time travel or historical fiction stories for both children and adults. "This is a unique book, overall, and I recommend it to writers and those interested in methods of time travel in general." "The Time Traveler's Guide is a great resource for any writer wanting to improve their craft."

"Beginning in Israel, Mae E. Sander explores the interaction of ancient Jews and Romans in locations such as Jerusalem, Masada, and the Galilee. Through studying their monuments, technology, and wars, the author explains why the Jews nearly disappeared from their original land by dispersing throughout Europe, North Africa, and the Middle East.".

"Step back in time and discover the sights, sounds and smells of London through the ages in this enthralling journey into the capital's rich, teeming and occasionally hazardous past. [The author is] your guide to six extraordinary periods in London's history -- the age of Shakespeare, medieval city life, the plague, coffee houses, the reign of Victoria and the post-Blitz recovery." --Book flap.