Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. . 1998-2007.
beat frequency — The periodic variation in amplitude of an oscillation resulting from the superimposition (or mixing) of two oscillations of differing frequencies. It is equal to the difference between the two frequencies … Aviation dictionary
frequency — [n] commonness, repetitiveness abundance, beat, constancy, density, frequentness, iteration, number, oscillation, periodicity, persistence, prevalence, pulsation, recurrence, regularity, reiteration, repetition, rhythm; concept 634 Ant.… … New thesaurus
Oscillation — For other uses, see oscillator (disambiguation) and oscillation (mathematics). An undamped spring–mass system is an oscillatory system. Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a… … Wikipedia
Frequency — For other uses, see Frequency (disambiguation). Three cyclically flashing lights, from lowest frequency (top) to highest frequency (bottom). f is the frequency in hertz (Hz), meaning the number of cycles per second. T is the period in seconds (s) … Wikipedia
frequency — I (New American Roget s College Thesaurus) Repeated occurrence Nouns frequency, oftenness; repetition, recurrence, persistence; perse verance; prevalence; continuance; oscillation. Verbs do frequently; do nothing but, keep on, continue (see… … English dictionary for students
Neural oscillation — is rhythmic or repetitive neural activity in the central nervous system. Neural tissue can generate oscillatory activity in many ways, driven either by mechanisms localized within individual neurons or by interactions between neurons. In… … Wikipedia
Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… … Wikipedia
Regenerative circuit — The regenerative circuit (or self regenerative circuit) allows an electronic signal to be amplified many times by the same vacuum tube or other active component such as a field effect transistor.Description Regenerative circuits were employed in… … Wikipedia
Wilberforce pendulum — A Wilberforce pendulum, invented by British physicist Lionel Robert Wilberforce around 1896 [cite journal|last=Wilberforce|first=Lionel Robert|date=1896|title=On the vibrations of a loaded spiral spring|journal=Philos. Mag.|volume=38|pages=386… … Wikipedia
Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal … Wikipedia
Quasi-periodic oscillations — In high energy (X ray) astronomy, quasi periodic oscillations (QPOs) refer to the way the X ray light from an astronomical object flickers about certain frequencies. In these situations, the X rays are emitted near the inner edge of an accretion… … Wikipedia
