Invaders From The Infinite by John W. Campbell:
Science Fiction Inventions, Technology and Ideas
This book is the third volume of John Campbell's Arcot-Morey-Wade series, which tell the story of three young scientists who invent the technologies needed to save the Earth (and most of the universe by the time the series is over). This is space opera on a grand scale; the confidence that rational men can solve any problem boils off every page.
Instantaneous movement over vast distances, points many light-years apart.
A means of providing propulsion for a spacecraft.
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