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dirac's constant in Science

Dirac's constant

[dĭ-răks]
  1. A physical constant often used in quantum mechanics in place of Planck's constant, equal to h, where h equals Planck's constant. Its symbol is ℏ. Also called h-bar
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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