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.

The idea of time travel is one that never gets old. It has enthralled the imaginative, the serious, and the scientific for centuries. Your readers will learn the science behind the fantasy of time travel, the theories behind such an ability, and the inventions that are trying to get us to the past, and beyond.

Its' Really About Time provides a clear and complete explanation of why it will someday be possible to travel years, decades or even centuries in the future, a direct consequence of Einstein's Special Theory of Relativity. The book is aimed at intellectually curious people and requires no previous science or mathematics training.

We are now accustomed to conceive of science as an instrumental activity, producing numbers, measurements and graphs by means of sophisticated devices. This book investigates the historical process that gave rise to this instrumental culture. The contributors trace the displacement of instruments across the globe, the spread of practices or precision and the circulation and appropriation of skills and knowledge. Through comparative and contextual approaches, the volume confronts the tension between the local and the global, examining the process of the universalization of science. Bringing together case studies ranging from the seventeenth to the twentieth centuries, contributors discuss French, German and British initiatives, as well as the knowledge and techniques of travellers in countries such as India, Africa, South East Asia and the Americas. Students and researchers interested in the history of science in both Western and non-Western cultures will find this book a valuable and thought-provoking read.

This book explores the idea of time travel from the first account in English literature to the latest theories of physicists such as Kip Thorne and Igor Novikov. This very readable work covers a variety of topics including: the history of time travel in fiction; the fundamental scientific concepts of time, spacetime, and the fourth dimension; the speculations of Einstein, Richard Feynman, Kurt Goedel, and others; time travel paradoxes, and much more.

Most engrossing account of out-of-body experiences since Monroe's Journeys Out of the Body. Detailed instructions to launch you on your own spiritual adventures.