electro-, electr-, electri-
(Greek > Latin: electric, electricity; from amber, resembling amber, generated from amber which when rubbed vigorously [as by friction], produced the effect of static electricity)
Electronics in our lives consists of numerous tools
Equipment which we use everyday relies on electronics to function including calculators, car controls, cameras, washing machines, medical scanners, mobile telephones, radar systems, computers; as well as many other applications or devices which are listed in this unit.
2. The group or system of electrons revolving around the nucleus of an atom; a cloud-like group of electrons.
3. In a vacuum tube, the area between the electrodes that contains a great number of relatively stationary electrons.
2. An alloy of two metals in which a progressive change in composition is accompanied by a progression of phases, differing in crystal structure.
2. The orbital arrangement of an atom's electrons.
Negatively charged electrons are attracted to a positively charged nucleus to form an atom or an ion.3. The arrangement of electrons in an atom, molecule, or other physical structure; such as, a crystal.
4. The specific distribution of electrons in atomic orbitals of atoms or or ions.
2. A microwave amplifier tube where electron bunching is produced by an electron beam projected parallel to a magnetic field and is also influenced by a transverse electric field produced by a signal generator.
2. A method of coupling electrical energy from one circuit to another through the electron stream in a vacuum tube.
3. A process of coupling or linking two circuits inside an electron tube, used primarily with multigrid tubes.
The electron stream passing between electrodes in one circuit transfers energy to electrodes in the other circuit.
2. An electrode supplying current of charged heavy ions that uses microwave power to heat electrons to energies of tens of kilovolts in two magnetic mirror confinement chambers in a series.
Ions formed in the first chamber drift into the second chamber, where they become charged.
2. A wave in a plasma that moves parallel to the magnetic field produced by currents outside the plasma at frequencies less than that of the electron cyclotron resonance, and which is circularly polarized, rotating in the same sense as electrons in the plasma; responsible for whistlers.
A whistler is defined as an effect that occurs when a plasma disturbance, caused by a lightning discharge, travels out along lines of magnetic force of the earth's field and is reflected back to its origin from a magnetic point on the earth's surface.
2. The quantum mechanical probability density for an electron.
2. A device or tool in which conduction is principally by electrons moving through a vacuum, gas, or semiconductor; such as, in a crystal diode, electron tube, transistor, or selenium rectifier.
Electron diffraction refers to the bending of electromagnetic waves as they pass around corners or through holes smaller than the wavelengths of the waves themselves.
The occurrence or the technique of producing electron diffractions through the incidence of electrons on matter.
The bending of an electron stream which occurs when the electron diffraction travels through a medium; such as, very thin metal foil.
2. An instrument related to the electron microscope, in which a beam of electrons strikes the sample, showing crystal pattern and other physical attributes on the resulting diffraction pattern: An electron diffractograph is used for chemical analysis, atomic structure determination, etc.
2. A function that produces the number of electrons per unit volume of phase space.
2. A chemical element that donates electrons to another compound.
It is a reducing agent which, because of its donating electrons, is itself oxidized in the process.
It may be caused by an electric field, light, heat, or impact chemical disintegration.2. A liberation of electrons from a substance into a vacuum.
Since all substances consist of atoms and since all atoms contain electrons, any substance may emit electrons; usually, however, the term refers to the emission of electrons from the surface of a solid.3. The freeing of electrons into space from the surface of a body under the influence of heat, light, impact, chemical disintegration, or a potential difference.