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"The whole problem of energy sources is going to be solved by little solutions, not by some big new piece of technology that does everything. We got into this crisis by believing that we had one big piece of technology that would do everything (oil)."
- Gregory Benford

Gravity Planer  
  Device that creates a gravity field.  

"...That's one of the most primitive spacecraft I've ever seen." He moved his claw about on the screen, pointing as he talked.

"The outer shell is an iron alloy. The rotating ring is a method of imitating gravity by using centripetal force. So they don't have the gravity planer. In fact they're probably using a reaction drive."

The Captain's catlike earls went up. "But we're lightyears from the nearest star!"

"They must have a better reaction drive than we ever developed. We had the gravity planer before we needed one that good."

From The Warriors, by Larry Niven.
Published by Worlds of If in 1966
Additional resources -

Read this excerpt from Brigands of the Moon (1930), by Ray Cummings, describing artificial gravity.

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Additional resources:
  More Ideas and Technology from The Warriors
  More Ideas and Technology by Larry Niven
  Tech news articles related to The Warriors
  Tech news articles related to works by Larry Niven

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