| electron |
The negatively charged subatomic particle with charge 1.60218 x 10 -19 coulombs and rest mass 9.10939 x 10 -31 kg. Each element in the periodic table is characterized by a fixed number of electrons orbiting a much heavier nucleus. The mass of the electron is about 1/1836 that of the proton. See free electron, beta particle. Boorse, HA, and L. Motz, 1966: The World of the Atom, Vol. I, 408?26.
출처: amsglossary.allenpress.com/glossary/browse
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| electron volt |
(Abbreviated eV.) The kinetic energy acquired by an electron accelerated from rest through a potential difference of one volt (1.6 x 10 -19 J).
출처: amsglossary.allenpress.com/glossary/browse
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| electron microscope |
A microscope that uses an electron beam focused by magnetic "lenses." See scanning electron microscope; transmission electron microscope.
출처: www.fao.org/docrep/003/X3910E/X3910E08.htm
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| electron microscope |
a powerful instrument to look at atoms.
출처: library.thinkquest.org/J001539/glossary.html
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| electronic fetal monitor |
A machine that continuously records fetal heartbeat or maternal uterine contractions. It may be attached externally to a woman's abdomen by two belts or through the vagina with an electrode on the baby's scalp.
출처: www.bdid.com/termse.htm
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