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quanta

 

pl., quantum

physics A packet of radiation possessing energy equal to h·f joules, where h is the Planck constant and f the frequency of the radiation, = (h·f160.2177~) × 1021 eV. For light, sometimes also photon.

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Science Dictionary: quanta
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(kwahn-tuh)

sing. quantum

In physics, discrete bundles in which radiation and other forms of energy occur. For example, in the Bohr atom, light is sent out in quanta called photons. (See quantum mechanics.)

 
 

 

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Measures and Units. A Dictionary of Weights, Measures, and Units. Copyright © Donald Fenna 2002, 2004. All rights reserved.  Read more
Science Dictionary. 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. All rights reserved.  Read more