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.
Units in the system are usually characterized by the prefix stat-, as statampere, statvolt, etc.2. A centimeter-gram-second system of electric and magnetic units in which the unit of charge is that charge which exerts a force of one dyne on another unit charge when separated from it by a distance of one centimeter in a vacuum.
Other units are derived from this definition by assigning unit coefficients in equations relating electric and magnetic quantities.
2. A concept that in a stable ionic structure, the valence of each anion, with changed sign, equals the sum of the strengths of its electrostatic bonds to the adjacent cations or atoms or groups of atoms with one or more positive or negative electric charges.
2. A voltmeter which works by measuring the force exerted between stationary electric charges which is usually graduated in volts or kilovolts.
3. A voltmeter in which the voltage to be measured is applied between fixed and movable metal vanes.
The resulting electrostatic force deflects or turns the movable vane against the tension of a spring.
2. The study of electric fields produced by stationary source charges or, more precisely, a constant charge density at each point.
3. A branch of physics dealing with electric charges at rest and with objects charged with electricity and constant-intensity electric fields.
2. The process of recording and reproducing visible patterns with the formation and utilization of inactive electrostatic charge patterns.
3. A generic term covering all processes involving the forming and use of electrostatic charged patterns for recording and reproducing images.
This field of recording and reproducing images is divided into electrophotography and electrography.
2. A very sensitive, electrically operated instrument used to record sounds of the heart.
This is an instrument which gives doctors a high-fidelity record of heart sounds so faint they can't be heard by human ears even with the aid of a physician's stethoscope.
In the latter case, the stimulation is used experimentally to facilitate and to hasten the healing of fractures.2. The application of electric current to stimulate bone or muscle tissue for therapeutic purposes; such as, the facilitation of muscle activation and muscle strengthening.
2. A depth recording obtained from electrodes inserted into the corpus striatum (a mass of striped gray and white nervous tissue in each hemisphere of the brain).
2. A form of elastic deformation of a dielectric induced by an electric field, associated with those components of strain that are independent of reversal of field direction, in contrast to the piezoelectric effect.
3. The change in dimensions which occurs in some dielectric materials when they are placed in an electric field.
4. An activity similar to piezoelectricity, but electrostrictive ceramics expand according to the square of the voltage whereas piezoelectric materials expand linearly.
Electrostrictive materials present less hysteresis (delayed response) than piezoelectric materials, but they are difficult to use at very low voltages.