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# Under-frequency

noun, plural frequencies.
1.
Also, frequence. the state or fact of being frequent; frequent occurrence:
We are alarmed by the frequency of fires in the neighborhood.
2.
rate of occurrence:
The doctor has increased the frequency of his visits.
3.
Physics.

the number of periods or regularly occurring events of any given kind in unit of time, usually in one second.
the number of cycles or completed alternations per unit time of a wave or oscillation. Symbol: F;
Abbreviation: freq.

4.
Mathematics. the number of times a value recurs in a unit change of the independent variable of a given function.
5.
Statistics. the number of items occurring in a given category.
noun (pl) -cies
1.
the state of being frequent; frequent occurrence
2.
the number of times that an event occurs within a given period; rate of recurrence
3.
(physics) the number of times that a periodic function or vibration repeats itself in a specified time, often 1 second. It is usually measured in hertz ν, f
4.
(statistics)

the number of individuals in a class (absolute frequency)
the ratio of this number to the total number of individuals under survey (relative frequency)

5.
(ecology)

the number of individuals of a species within a given area
the percentage of quadrats that contains individuals of a species

frequency
(frē’kwən-sē)

Physics The rate at which a repeating event occurs, such as the full cycle of a wave. Frequencies are usually measured in hertz. Compare amplitude. See also period.

Mathematics The ratio of the number of occurrences of some event to the number of opportunities for its occurrence.

frequency definition

In physics, the number of crests of a wave that move past a given point in a given unit of time. The most common unit of frequency is the hertz (Hz), corresponding to one crest per second. The frequency of a wave can be calculated by dividing the speed of the wave by the wavelength. Thus, in the electromagnetic spectrum, the wavelengths decrease as the frequencies increase, and vice versa.

Tagged:

• Fringe

noun 1. a decorative border of thread, cord, or the like, usually hanging loosely from a raveled edge or separate strip. 2. anything resembling or suggesting this: a fringe of grass around a swimming pool. 3. an outer edge; margin; periphery: on the fringe of the art world. 4. something regarded as peripheral, marginal, secondary, […]

• Frock

noun 1. a gown or dress worn by a girl or woman. 2. a loose outer garment worn by peasants and workers; smock. 3. a coarse outer garment with large sleeves, worn by monks. 4. frock coat. verb (used with object) 5. to provide with, or clothe in, a frock. 6. to invest with priestly […]

• Fund

noun 1. a supply of money or pecuniary resources, as for some purpose: a fund for his education; a retirement fund. 2. supply; stock: a fund of knowledge; a fund of jewels. 3. funds, money immediately available; pecuniary resources: to be momentarily without funds. 4. an organization created to administer or manage a fund, as […]

• Underfur

noun 1. the fine, soft, thick, hairy coat under the longer and coarser outer hair in certain animals, as seals, otters, and beavers. noun 1. the layer of dense soft fur occurring beneath the outer coarser fur in certain mammals, such as the otter and seal Also called undercoat

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