| The New Dictionary of Cultural Literacy, Third Edition. 2002. |
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| quantum leap |
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| In physics, the movement of an electron from one orbit in an atom to another, sending out or taking on a photon in the process. (See Bohr atom.) | 1 |
| ‡ Informally, a “quantum leap” may be any great, sudden, or discontinuous change. | 2 |
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| | | The New Dictionary of Cultural Literacy, Third Edition. Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
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