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"What has allowed so many Psychopathic Personalities to rise so high in corporations and government, is that they are so decisive. Unlike normal people, they are never filled with doubts, for the simple reason that they cannot care what happens next."
- Kurt Vonnegut, Jr.

Negative Safety-Field  
  A paragravity-based shield for space craft.  

"Only the particles with freak velocities can touch us," Drake went on. "We have a negative safety-field, that will stop everything under ten kilometers a second, and deflect a good deal of the rest."

The ugly face of Biggs showed a stubborn disbelief, and he tried to explain: "You can feel the peegee [paragravity] field, here in the ship, that holds you against the deck and keeps you from being space-sick? Well, there's a similar field around the hull, pushing away - you couldn't hit us with a rifle from fifty meters."

Technovelgy from Collision Orbit, by Jack Williamson.
Published by Astounding in 1942
Additional resources -

Compare to the force field from Islands of Space (1931) by John W. Campbell and the Langston field from Niven and Pournelle's 1974 classic The Mote in God's Eye.

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Additional resources:
  More Ideas and Technology from Collision Orbit
  More Ideas and Technology by Jack Williamson
  Tech news articles related to Collision Orbit
  Tech news articles related to works by Jack Williamson

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