Internet Policy Discussion with Useful Examples


3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

lepton \lepton\ n. (Physics) an elementary particle that participates in weak interactions but does not participate in the strong interaction; it has a baryon number of 0. Some known leptons are the {electron}, the {negative muon}, the {tau-minus particle}, and the neutrinos associated with each of these particles. [WordNet 1.5 +PJC]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Electron \E*lec"tron\, noun [NL., fr. Gr. 'h'lektron. See {Electric}.]

1. Amber; also, the alloy of gold and silver, called {electrum}. [archaic]

2. (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 a {cation}. Electrons are projected from the cathode of vacuum tubes (including television picture tubes) as {cathode rays} and from radioactive substances as the {beta rays}. Previously also referred to as {corpuscle}, 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 a {positron}, or {antielectron} [Webster 1913 Suppl. +PJC] Electro-negative

From WordNet (r) 3.0 (2006) [wn]:



1: an elementary particle with negative charge [syn: {electron}, {negatron}]

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Tuesday, March 3, 2015 6:46:03 PM Coordinated Universal Time (UTC)