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electron
[ih-lek-tron]
noun
Also called negatron.Physics, Chemistry.an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602 × 10 −19 coulombs, a mass of 9.108 × 10 −31 kilograms, and spin of ½, and existing independently or as the component outside the nucleus of an atom.
Electricity.a unit of charge equal to the charge on one electron.
electron
/ ɪˈɛٰɒ /
noun
a stable elementary particle present in all atoms, orbiting the nucleus in numbers equal to the atomic number of the element in the neutral atom; a lepton with a negative charge of 1.602176462×10 –19 coulomb, a rest mass of 9.10938188×10 –31 kilogram, a radius of 2.817940285×10 –15 metre, and a spin of 1/ 2
electron
A stable elementary particle in the lepton family having a mass at rest of 9.107 × 10 - 28 grams and a negative electric charge of approximately 1.602 × 10 - 19 coulombs. Electrons orbit about the positively charged nuclei of atoms in distinct orbitals of different energy levels, called shells. Electrons are the primary charge carriers in electric current.
Compare positron See also electromagnetism elementary particle ion See Table at subatomic particle
A positron or a negatron.
electron
An elementary particle with a negative charge and a very small mass. Electrons are normally found in orbits around the nucleus of an atom. The chemical reactions that an atom undergoes depend primarily on the electrons in the outermost orbits (the valence electrons).
51Թ History and Origins
51Թ History and Origins
Origin of electron1
Example Sentences
About half of the electrons Gazans are using today come from solar power, according to a December estimate by the Shelter Cluster, a group that coordinates among aid organizations working in Gaza.
Whatever process occurred to do this preserved the original brain tissue so well that individual neurons can actually be seen using a scanning electron microscope.
The team used imaging with x-rays and electron microscopy to conclude that the brain must have been heated to at least 510C before cooling rapidly.
Inside this huge machine, which is called a synchrotron, electrons are accelerated to almost the speed of light to produce a powerful X-ray beam that can probe the scroll without damaging it.
The names for these speculative particles often tack on an S to the names of known particles: selectrons contrast electrons, the squark is the inverted twin of the quark, and so on.
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