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 use of intense beams of electrons to implode small pellets of deuterium and tritium so that they reach the temperature and density required for initiating a fusion reaction.
It consists of an emitting cathode and an anode, with an aperture for passage of some of the electrons.
Usually the beam is made to strike a fluorescent screen so the deflection can be observed.
2. A source of multiple charged heavy ions which uses an intense electron beam with energies of five to ten kiloelectronvolts to successively ionize injected gas.
The resulting laser output beam moves correspondingly, to provide high-speed scanning for data retrieval and imaging applications.
The beam can be electronically blanked, unblanked, or modulated with analog video signals for the projection of picture or other graphic data.
2. The practice of scanning a beam of electrons in a patterned fashion across a surface covered with a film called the resist, exposing the resist, and of selectively removing either exposed or non-exposed regions of the resist called, "developing".
3. Lithography in which the radiation-sensitive film or resist is placed in the vacuum chamber of a scanning-beam electron microscope and exposed by an electron beam under digital computer control.
After exposure, the film is removed from the vacuum chamber for conventional development and other production processes.
2. A machining process which takes place in a vacuum.
Heat is produced by a focused and controlled electron beam at a sufficiently high temperature to volatilize and so to remove metal in a specified manner.
Drilling and cutting are examples of specific applications.
2. An instrument which measures the intensity and direction of magnetic forces by the immersion of an electron beam into the magnetic field.
It's used principally for refining metals to a higher degree of purity than is possible with conventional vacuum-melting techniques.
Its chief advantage is the ability to control the temperature of the molten material and the time it remains melted because both affect the degree of volatilization of impurities.
Volatilization is the conversion of a chemical substance from a liquid or solid state to a gaseous or vapor state by the application of heat, by reducing pressure, or by a combination of these processes. It is also known as vaporization.
2. A parametric amplifier in which energy is pumped from an electrostatic field into a beam of electrons traveling down the length of the tube, and electron couplers impress the input signal at one end of the tube and translate spiraling electron motion into electric output at the other end.
2. The use of an electron beam to produce excitation for population inversion and lasing action in a semiconductor laser.
2. A recorder in which a moving electron beam is used to record signals or data on to photographic or thermoplastic film in a vacuum chamber.
3. A device that transfers computer data onto microfilm using an electron beam.
2. An electron tube whose performance depends on the formation and control of one or more electron beams.