Bohr atom


Also found in: Encyclopedia.

Bohr at·om

(bōr),
a concept or model of the atom in which the negatively charged electrons move in circular or elliptic orbits around the positively charged nucleus, energy being emitted or absorbed when electrons change from one orbit to another.
Farlex Partner Medical Dictionary © Farlex 2012

Bohr at·om

(bōr at'ŏm)
A concept or model of the atom in which the negatively charged electrons move in circular or elliptic orbits around the positively charged nucleus, energy being emitted or absorbed when electrons change from one orbit to another.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Bohr,

Niels H.D., Danish physicist and Nobel laureate, 1885-1962.
Bohr atom - a concept or model of the atom in which the negatively charged electrons move in circular or elliptical orbits around the positively charged nucleus, energy being emitted or absorbed when electrons change from one orbit to another.
Bohr magneton - the net magnetic moment of one unpaired electron; used in electron spin resonance spectrometry for detection and estimation of free radicals. Synonym(s): electron magneton
Bohr theory - that spectrum lines are produced by the quantized emission of radiant energy when electrons drop from an orbit of a higher to one of a lower energy level, or by absorption of radiation when an electron rises from a lower to a higher energy level.
Medical Eponyms © Farlex 2012
References in periodicals archive ?
Greenberger Gravitational Bohr Atom. As far as we know, Greenberger [6] was the first to foresee the existence of mass-dependent interference effects related to a particle bound in an external gravitational field.
Here we are particularly interested in analyzing Greenberger gravitational Bohr atom, which from the classical point of view consists of a small mass m bound to a very much larger mass M by the potential V(r) = -GMm/r, in the limit where all recoil effects may be neglected.
In fact, the WEP, as we have already mentioned, is a pure local statement, while Greenberger gravitational Bohr atom is an object extended in space.
According to calculations based on predictions of this discrete fractal paradigm, the value of the gravitational Bohr atom is actually on the order of 2[pi][a.sub.0], where [a.sub.0] is the standard Bohr radius.
Two semiclassical examples that violate the CEP but not the WEP in an external gravitational field were discussed from a theoretical point of view: Greenberger gravitational Bohr atom and the deflection at the tree level of different quantum particles owed to an external weak higher-order gravitational field.
After an analysis of the optimistic overtones built into images of the double helix, Myers compares these to an earlier scientific "icon": the Bohr atom logo, two intersecting ovals enclosing a circle.
The Greek understanding of atoms was replaced by Newtonian atoms, which in turn was replaced by Bohr atoms, which are presently interpreted as quantum atoms.