Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A stable elementary particle in the lepton class having a negative electric charge of 1 elementary unit (about 1.602 × 10−19 coulombs) and a mass of about 9.11 × 10−28 grams. Electrons are found in shells orbiting the nuclei of atoms and can also move freely through space as cathode rays in a cathode-ray tube or as beta particles emitted by radioactive nuclei, or flow in a current through a conducting material impelled by an electric potential difference.
from The Century Dictionary.
- noun Same as
electrum . - noun In phys. chew., the definite charge of electricity which is associated with a univalent ion. Sometimes called an atom of electricity. See
electricity . - noun According to a recent hypothesis, a minute particle detached from an atom of a gas by certain agencies, as when the gas is carrying an electric current.
from the GNU version of the Collaborative International Dictionary of English.
- noun archaic Amber; also, the alloy of gold and silver, called
electrum . - noun (Physics & Chem.) one of the fundamental subatomic particles, having a negative charge and about one thousandth the mass of a hydrogen atom. The electron carries (or is) a natural unit of negative electricity, equal to 3.4 x 10-10 electrostatic units, and is classed by physicists as a
lepton . Its mass is practically constant at the lesser speeds, but increases due to relativistic effects as the velocity approaches that of light. Electrons are all of one kind, so far as is known. Thus far, no structure has been detected within an electron, and it is probably one of the ultimate composite constituents of all matter. An atom or group of atoms from which an electron has been detached has a positive charge and is called acation . Electrons are projected from the cathode of vacuum tubes (including television picture tubes) ascathode rays and from radioactive substances as thebeta rays . Previously also referred to ascorpuscle , an obsolete term. The motion of electrons through metallic conductors is observed as an electric current. A particle identical to the electron in mass and most other respects, but having a positive instead of a negative charge, is called apositron , orantielectron
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics The
subatomic particle having a negative charge and orbiting thenucleus ; the flow of electrons in aconductor constituteselectricity . - noun chemistry, obsolete
Alloys ofmagnesium and other metals, likealuminum orzinc , that were manufactured by the German company Chemische Fabrik Griesheim-Elektron.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an elementary particle with negative charge
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The proton and the neutron have a diameter of 10-15m (a femtometre or a millionth of a millionth of a millimetre) and the electron is at least 1,000 times smaller.
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Its resolving power could be considered theoretically unlimited, since the electron is a pointlike particle, However, according to quantum mechanics, every particle has wave characteristics which introduce an uncertainty into the determination of its position.
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It had been known since long that the electron is a small magnet.
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These are through quantum mechanistic lan - w h o a u t h o r s the "Master Pro - d o w n into more subtle units of sub-units of a super-electron. guage codes. grams" for the Creator Gods. space which we call the electron 28 Man's sub-electrons are con - 35 These codes work through Hence, our Son universe is a Light and sub-electron spaces; these are densations of mesons and fractional multiple manifestations of s u b - fabric made u p of many conscious - interconnected by wormholes.charges. electrons within both physical and
Recently Uploaded Slideshows czaragon 2009
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Sometimes an electron from a high-energy level drops to a lower energy level.
A nice blog review of Lost in Translation ewillett 2010
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Sometimes an electron from a high-energy level drops to a lower energy level.
The laser at 50 ewillett 2010
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Shortly after the virus isolation, my co-workers and I were able to show that it was not immunologically related to HTLV, and in electron microscopy, it was very different from HTLV viral particles.
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A theoretical model for the appearance of an electron is just that.
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The spin of an electron is a well-known example (it can only have projections +1/2 or − 1/2 on any direction in space).
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An electron is as point-like an object as can be: it has no internal structure as far as we know, except possibly on the Planck scale (for which you need string theory and that's again quantum mechanics).
chained_bear commented on the word electron
Used as a misspelling of "election."
May 6, 2009