Begin Adventure / How to Break the Light Barrier by A.D. 2079 (third edition)

Begin Adventure / How to Break the Light Barrier by A.D. 2079 (third edition) PDF Author: Homer B. Tilton
Publisher: Infinite Study
ISBN: 1599731096
Category : Science
Languages : en
Pages : 147

Get Book

Book Description
In 1905 Einstein found from relativity that there is an absolute lightbarrier. He reiterated his ¿finden¿ in 1916, writing, ¿¿We conclude that in thetheory of relativity the velocity c plays the part of limiting velocity, which canneither be reached nor exceeded by any real body.¿ Poincaré and Lorentz didnot share Einstein¿s view of relativity in that regard. Nor, later, did Fermi andTeller it seems. There were others who hesitated to come forward. Then in a1921 lecture and a 1922 look, ¿sidelights on Relativity,¿ Einstein wrote (pp. 35-6), ¿Poincaré is right. The idea of the measuring-rod and the idea of the clockco-ordinated with it in the theory of relativity do not find their exactcorrespondence in the real world.¿Thus the light barrier was questioned by the same man who erected it, andthe last theoretical obstacle to practical star travel was mortally wounded butfew noticed. There is still a conditional light barrier, but no longer one that isimpenetrable. It became clear that the second postulate of special relativity doesnot equate to an absolute light barrier as many continue to believe even to thisday; some highly-regarded scientists continue to subscribe to this faulty logic:¿I believe that special relativity is correct and consequently exceeding thespeed of light [by] (just accelerating more and more) is impossible,¿¿Don Lincoln, Fermilab, email dated 3 Feb. 2005.Such statements reflect a misunderstanding of the second postulate. The key isthat the second postulate applies to photons but not to rocketships; rocketshipsare not macrophotons as Sachs pointed out.In the September 1971 issue of the journal ¿Physics Today¿ MendelSachs wrote about Einstein¿s 1921-22 ¿change of mind¿ as he referred to it,again in 1985, 1993 and at other times; but Sachs¿ writings were scorned byother scientists. It was as if others wanted there to be a truly impenetrable lightbarrier perhaps because it seemed to hold open the exciting promise of timetravel. The first author became aware of Sachs¿ writings in 2004 and the twoexchanged views for a time as reported here.This book presents a hard-science case for practical star travel. The firstsix chapters lay it all out in a logical and factual manner consistent with thetheory of relativity. Chapters 7 & 8 outline a ¿Grand Experiment¿ designed toprobe the light barrier. Chapters 7-9 give future-fiction accounts of possiblescenarios of Humanity¿s first hesitant steps to the stars. Chapter 10 presents aseparate argument questioning the idea of an absolute light barrier.

Begin Adventure / How to Break the Light Barrier by A.D. 2079 (third edition)

Begin Adventure / How to Break the Light Barrier by A.D. 2079 (third edition) PDF Author: Homer B. Tilton
Publisher: Infinite Study
ISBN: 1599731096
Category : Science
Languages : en
Pages : 147

Get Book

Book Description
In 1905 Einstein found from relativity that there is an absolute lightbarrier. He reiterated his ¿finden¿ in 1916, writing, ¿¿We conclude that in thetheory of relativity the velocity c plays the part of limiting velocity, which canneither be reached nor exceeded by any real body.¿ Poincaré and Lorentz didnot share Einstein¿s view of relativity in that regard. Nor, later, did Fermi andTeller it seems. There were others who hesitated to come forward. Then in a1921 lecture and a 1922 look, ¿sidelights on Relativity,¿ Einstein wrote (pp. 35-6), ¿Poincaré is right. The idea of the measuring-rod and the idea of the clockco-ordinated with it in the theory of relativity do not find their exactcorrespondence in the real world.¿Thus the light barrier was questioned by the same man who erected it, andthe last theoretical obstacle to practical star travel was mortally wounded butfew noticed. There is still a conditional light barrier, but no longer one that isimpenetrable. It became clear that the second postulate of special relativity doesnot equate to an absolute light barrier as many continue to believe even to thisday; some highly-regarded scientists continue to subscribe to this faulty logic:¿I believe that special relativity is correct and consequently exceeding thespeed of light [by] (just accelerating more and more) is impossible,¿¿Don Lincoln, Fermilab, email dated 3 Feb. 2005.Such statements reflect a misunderstanding of the second postulate. The key isthat the second postulate applies to photons but not to rocketships; rocketshipsare not macrophotons as Sachs pointed out.In the September 1971 issue of the journal ¿Physics Today¿ MendelSachs wrote about Einstein¿s 1921-22 ¿change of mind¿ as he referred to it,again in 1985, 1993 and at other times; but Sachs¿ writings were scorned byother scientists. It was as if others wanted there to be a truly impenetrable lightbarrier perhaps because it seemed to hold open the exciting promise of timetravel. The first author became aware of Sachs¿ writings in 2004 and the twoexchanged views for a time as reported here.This book presents a hard-science case for practical star travel. The firstsix chapters lay it all out in a logical and factual manner consistent with thetheory of relativity. Chapters 7 & 8 outline a ¿Grand Experiment¿ designed toprobe the light barrier. Chapters 7-9 give future-fiction accounts of possiblescenarios of Humanity¿s first hesitant steps to the stars. Chapter 10 presents aseparate argument questioning the idea of an absolute light barrier.

Begin the Adventure

Begin the Adventure PDF Author: Homer B. Tilton
Publisher:
ISBN: 9781461913580
Category : SCIENCE
Languages : en
Pages : 147

Get Book

Book Description


Getting the message through: A Branch History of the U.S. Army Signal Corps

Getting the message through: A Branch History of the U.S. Army Signal Corps PDF Author: Rebecca Robbins Raines
Publisher: Government Printing Office
ISBN: 9780160872815
Category :
Languages : en
Pages : 488

Get Book

Book Description
Getting the Message Through, the companion volume to Rebecca Robbins Raines' Signal Corps, traces the evolution of the corps from the appointment of the first signal officer on the eve of the Civil War, through its stages of growth and change, to its service in Operation DESERT SHIELD/DESERT STORM. Raines highlights not only the increasingly specialized nature of warfare and the rise of sophisticated communications technology, but also such diverse missions as weather reporting and military aviation. Information dominance in the form of superior communications is considered to be sine qua non to modern warfare. As Raines ably shows, the Signal Corps--once considered by some Army officers to be of little or no military value--and the communications it provides have become integral to all aspects of military operations on modern digitized battlefields. The volume is an invaluable reference source for anyone interested in the institutional history of the branch.

Cub Scout Leader How-to Book

Cub Scout Leader How-to Book PDF Author: Boy Scouts of America
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

Get Book

Book Description


Engineering

Engineering PDF Author: Unesco
Publisher: UNESCO
ISBN: 9231041568
Category : Technology & Engineering
Languages : en
Pages : 392

Get Book

Book Description
This report reviews engineering's importance to human, economic, social and cultural development and in addressing the UN Millennium Development Goals. Engineering tends to be viewed as a national issue, but engineering knowledge, companies, conferences and journals, all demonstrate that it is as international as science. The report reviews the role of engineering in development, and covers issues including poverty reduction, sustainable development, climate change mitigation and adaptation. It presents the various fields of engineering around the world and is intended to identify issues and challenges facing engineering, promote better understanding of engineering and its role, and highlight ways of making engineering more attractive to young people, especially women.--Publisher's description.

The Leveller

The Leveller PDF Author: Julia Durango
Publisher: HarperCollins
ISBN: 0062314025
Category : Young Adult Fiction
Languages : en
Pages : 272

Get Book

Book Description
Gamers and action fans of all types will dive straight into the MEEP, a virtual-reality gaming world, thanks to Julia Durango's cinematic storytelling. A touch of romance, constant twists, and a vivid, multidimensional journey through a tricked-out virtual city will keep readers flying through to the breathtaking end. Nixy Bauer is used to her classmates being very, very unhappy to see her. After all, she's a bounty hunter in a virtual-reality gaming world—and she's frequently hired by irritated parents to pull kids out of the mazelike MEEP universe. But when the game's billionaire developer loses track of his own son in the MEEP, Nixy is in for the biggest challenge of her bounty-hunting career. Wyn Salvador isn't some lazy kid looking to escape his homework: Wyn does not want to be found. And he's left behind a suicide note. Nixy takes the job but quickly discovers that Wyn's not hiding—he's being held inside the game against his will. But who is holding him captive, and why? Nixy and Wyn attempt to fight their way out of a mind game unlike any they've encountered, and the battle brings them closer than either could have imagined. But when the whole world is virtual, how can Nixy possibly know if her feelings are real?

Deep Space Propulsion

Deep Space Propulsion PDF Author: K. F. Long
Publisher: Springer Science & Business Media
ISBN: 9781461406075
Category : Technology & Engineering
Languages : en
Pages : 367

Get Book

Book Description
The technology of the next few decades could possibly allow us to explore with robotic probes the closest stars outside our Solar System, and maybe even observe some of the recently discovered planets circling these stars. This book looks at the reasons for exploring our stellar neighbors and at the technologies we are developing to build space probes that can traverse the enormous distances between the stars. In order to reach the nearest stars, we must first develop a propulsion technology that would take our robotic probes there in a reasonable time. Such propulsion technology has radically different requirements from conventional chemical rockets, because of the enormous distances that must be crossed. Surprisingly, many propulsion schemes for interstellar travel have been suggested and await only practical engineering solutions and the political will to make them a reality. This is a result of the tremendous advances in astrophysics that have been made in recent decades and the perseverance and imagination of tenacious theoretical physicists. This book explores these different propulsion schemes – all based on current physics – and the challenges they present to physicists, engineers, and space exploration entrepreneurs. This book will be helpful to anyone who really wants to understand the principles behind and likely future course of interstellar travel and who wants to recognizes the distinctions between pure fantasy (such as Star Trek’s ‘warp drive’) and methods that are grounded in real physics and offer practical technological solutions for exploring the stars in the decades to come.

At the Heart of Katmai

At the Heart of Katmai PDF Author: Katherine Johnson Ringsmuth
Publisher: Department of Interior National Park Service
ISBN:
Category : History
Languages : en
Pages : 368

Get Book

Book Description


The Shape of Things to Come

The Shape of Things to Come PDF Author: H. G. Wells
Publisher: Read Books Ltd
ISBN: 1473345529
Category : Fiction
Languages : en
Pages : 492

Get Book

Book Description
First published in 1933, "The Shape of Things to Come" is science fiction novel written by H. G. Wells. Within it, world events between 1933 and 2106 are speculated with a single superstate representing the solution to all humanity's problems. A classic example of Wellsian prophesy, this volume is highly recommended for fans of his work and of the science fiction genre. Herbert George Wells (1866 - 1946) was a prolific English writer who wrote in a variety of genres, including the novel, politics, history, and social commentary. Today, he is perhaps best remembered for his contributions to the science fiction genre thanks to such novels as "The Time Machine" (1895), "The Invisible Man" (1897), and "The War of the Worlds" (1898). Many vintage books such as this are becoming increasingly scarce and expensive. We are republishing this book now in an affordable, modern, high-quality edition complete with a specially commissioned new biography of the author.

Books in Print Supplement

Books in Print Supplement PDF Author:
Publisher:
ISBN:
Category : American literature
Languages : en
Pages : 2576

Get Book

Book Description