| 单词 | electrical phenomenon |
| 释义 | electrical phenomenon (once / 63205 pages) n WORD FAMILY electrical phenomenon: electrical phenomena USAGE EXAMPLESThe electrical phenomenon is known to occur on Earth, but it was first observed on Mars by the Pathfinder mission in the late 1990s. National Geographic(Oct 19, 2016) Many other electrical phenomena are observed in the mountains. Longstreth, Thomas Morris, Reading the Weather(2012) The present writer would suggest the probability of its having been an electrical phenomenon. Whymper, Frederick, The Sea: Its Stirring Story of Adve...(2012) n a physical phenomenon involving electricity Hypo|Hyper amperage the strength of an electrical current measured in amperes capacitance, capacity, electrical capacityan electrical phenomenon whereby an electric charge is stored elastance, electrical elastancethe reciprocal of capacitance charge, electric chargethe quantity of unbalanced electricity in a body (either positive or negative) and construed as an excess or deficiency of electrons pyroelectricitygeneration of an electric charge on certain crystals (such as tourmaline) as a result of a change in temperature current, electric currenta flow of electricity through a conductor dielectric heatingheating of an insulator by a high-frequency electric field inductance, inductionan electrical phenomenon whereby an electromotive force (EMF) is generated in a closed circuit by a change in the flow of current electric potential, potential, potential difference, potential drop, voltagethe difference in electrical charge between two points in a circuit expressed in volts conductancea material's capacity to conduct electricity; measured as the reciprocal of electrical resistance electric resistance, electrical resistance, impedance, ohmic resistance, resistance, resistivitya material's opposition to the flow of electric current; measured in ohms reactanceopposition to the flow of electric current resulting from inductance and capacitance (rather than resistance) reluctance(physics) opposition to magnetic flux (analogous to electric resistance) skin effectthe tendency of high-frequency alternating current to distribute near the surface of a conductor distortiona change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal) electrical disturbanceelectrical signals produced by unwanted sources (atmospherics or receiver noise or unwanted transmitters) electromotive force, emf, voltagethe rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts electrostatic chargethe electric charge at rest on the surface of an insulated body (which establishes and adjacent electrostatic field) positive chargehaving a deficiency of electrons; having a higher electric potential negative chargehaving a surplus of electrons; having a lower electric potential mutual inductiongeneration of electromotive forces in each other by two adjacent circuits self-inductiongeneration of an electromotive force (EMF) in a circuit by changing the current in that circuit; usually measured in henries juiceelectric current evoked potentialthe electrical response of the central nervous system produced by an external stimulus resting potentialthe potential difference between the two sides of the membrane of a nerve cell when the cell is not conducting an impulse ohmagethe ohmic resistance of a conductor amplitude distortion, nonlinear distortiondistortion that occurs when the output signal does not have a linear relation to the input signal thermionic currentan electric current produced between two electrodes as a result of electrons emitted by thermionic emission physical phenomenon a natural phenomenon involving the physical properties of matter and energy |
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