Definition of frequency Frequency

/fɹiˈkwʌnsi/ - [freekwunsee] - fre•quen•cy

We found 12 definitions of frequency from 6 different sources.

What does frequency mean?

WordNet

Noun Plural: frequencies
frequency - the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"
		frequence, oftenness
		rate amount of a charge or payment relative to some basis; "a 10-minute phone call at that rate would cost $5"
		audio frequency, audio the sound elements of television
		radio frequency an electromagnetic wave frequency between audio and infrared
		infrared frequency, infrared the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
		wave number the reciprocal of the wavelength of a wave
		attendance the act of being present (at a meeting or event etc.)
		count per minute, counts/minute frequency per minute
frequency - the number of observations in a given statistical category
		absolute frequency
		cardinal number, cardinal the number of elements in a mathematical set; denotes a quantity but not the order
frequency - the ratio of the number of observations in a statistical category to the total number of observations
		relative frequency
		ratio the relative magnitudes of two quantities (usually expressed as a quotient)

= synonym
= antonym
= related word

Wiktionary

frequency (Noun)
The rate of occurrence of anything; the relationship between incidence and time period.
frequency (Noun)
The property of occurring often rather than infrequently.
frequency (Noun)
The quotient of the number of times n a periodic phenomenon occurs over the time t in which it occurs: f = n / t.
frequency (Noun)
number of times an event occurred in an experiment.

Webster DictionaryWebster's Unabridged Dictionary 📘

frequency (n.)
The condition of returning frequently; occurrence often repeated; common occurence; as, the frequency of crimes; the frequency of miracles.
frequency (n.)
A crowd; a throng.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

frequency
Number of occurrences of a repeated event per unit of time (e. g. oscillations per second).

Wikipedia

Frequency is cycles per second. A cycle in a wave is from one point to the same point as in from crest to crest.

formula_1

All electromagnetic waves travel at the speed of light in vacuum. (Other waves such as sound waves travel at much lower velocities), and electromagnetic waves travel at a speed lower than speed of light in non-vacuum medium.

Examples of electromagnetic wave is light, radio wave, and infrared light.

Visualizing electromagnetic waves.

Different types of electromagnetic waves have different frequencies.

Example.

One way to visualize this is if there were two trains traveling at the same speed, but the size of the train cars was smaller on one train than the other. If someone picked something that wasn't moving, like a signpost, and then counted how many train cars passed the sign post in one second for each train, they would know the frequency of cars passing in each train. The number and frequency of train cars passing the sign post would be different, because the train with smaller train cars would have more train cars passing the sign post in a second than the train with larger train cars. Knowing how many cars passed the sign post in one second, and knowing the speed of the train, one could figure out mathematically the size of each train car for each train.

For example, if the train was moving at 10 miles per second, and 10 train cars passed in one second, then each train car would be 1 mile long. If the other train was also moving at 10 miles per secon