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Knife-edge   Listen
Knife-edge  n.  (Mech.) A piece of steel sharpened to an acute edge or angle, and resting on a smooth surface, serving as the axis of motion of a pendulum, scale beam, or other piece required to oscillate with the least possible friction.

Collaborative International Dictionary of English 0.48

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"Knife-edge" Quotes from Famous Books

... is polished enough to reflect some light, it should be tested with the knife-edge test. In a dark room, set the speculum against the wall, and a large lamp, L, Fig. 2, twice the focal length away. Place a large sheet of pasteboard, A, Fig. 2, with a small needle hole opposite the blaze, by the side of the lamp, ...
— The Boy Mechanic: Volume 1 - 700 Things For Boys To Do • Popular Mechanics

Words linked to "Knife-edge" :   bound, boundary, limit

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