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AnonTechie writes:

For many decades, a fantasy among space enthusiasts has been to invent a device that produces a net thrust in one direction, without any need for reaction mass. Of course, a reaction-less space drive of this type is impossible. Or is it ? By Charles Platt

In October of this year, at the laboratory of Dr. James Woodward in California State University at Fullerton (above), I watched a very small-scale experiment that was surprisingly persuasive. Unlike all the "free energy" scams that you see online, Woodward's device does not violate basic physical laws (it does not produce more energy than it consumes, and does not violate Newton's third law). Nor is Woodward withholding any information about his methods. He has written a book, published by Springer, that explains in relentless detail exactly how his equipment works--assuming that it does, indeed, work. He published his theory in Foundations of Physics Letters, vol. 3, no. 5, 1990, and he even managed to get a US patent -- number 5,280,864, issued January 25, 1994.

http://boingboing.net/2014/11/24/the-quest-for-a-reactionless-s.html