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Bohr atom
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To Bohr atom
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Bohr atom
is always a great word to know.
So is half-life. Does it mean:
| the reciprocal of the bulk modulus, equal to the ratio of the fractional change in volume to the stress applied to a body |
| the time required for one half the atoms of a given amount of a radioactive substance to disintegrate |
American Heritage
Cultural Dictionary
Bohr atom [(bawr)]The simplest modern picture of the structure of the atom, according to which electrons move in orbits around the nucleus. The electron's orbits can exist only at certain well-defined distances from the nucleus. When an electron changes orbits, it does so in a sudden quantum leap. The energy difference between the initial and final orbit is emitted by the atom in bundles of electromagnetic radiation called photons.
Note: The Bohr atom is named after the twentieth-century Danish physicist Niels Bohr.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
