Difference between revisions of "Frequency"

From Nordan Symposia
Jump to navigationJump to search
m (Text replacement - "http://nordan.daynal.org" to "https://nordan.daynal.org")
Line 2: Line 2:
  
 
'''Frequency''' is the [[number]] of occurrences of a repeating [[event]] per unit [[time]]. It is also referred to as [[temporal]] frequency. The period is the duration of one [[cycle]] in a repeating event, so the period is the reciprocal of the frequency.
 
'''Frequency''' is the [[number]] of occurrences of a repeating [[event]] per unit [[time]]. It is also referred to as [[temporal]] frequency. The period is the duration of one [[cycle]] in a repeating event, so the period is the reciprocal of the frequency.
<center>For lessons on the related [[topic]] of '''''[[Attunement]]''''', follow [http://nordan.daynal.org/wiki/index.php?title=Category:Attunement '''''this link'''''].</center>
+
<center>For lessons on the related [[topic]] of '''''[[Attunement]]''''', follow [https://nordan.daynal.org/wiki/index.php?title=Category:Attunement '''''this link'''''].</center>
 
==Definitions and units==
 
==Definitions and units==
 
For cyclical [[processes]], such as [http://en.wikipedia.org/wiki/Rotation rotation], [http://en.wikipedia.org/wiki/Oscillation oscillations], or [[waves]], frequency is defined as a [[number]] of [[cycles]], or periods, per unit time. In [[physics]] and [[engineering]] [[disciplines]], such as [[optics]], [[acoustics]], and radio, frequency is usually denoted by a [[Latin]] letter f or by a Greek letter ν (nu).
 
For cyclical [[processes]], such as [http://en.wikipedia.org/wiki/Rotation rotation], [http://en.wikipedia.org/wiki/Oscillation oscillations], or [[waves]], frequency is defined as a [[number]] of [[cycles]], or periods, per unit time. In [[physics]] and [[engineering]] [[disciplines]], such as [[optics]], [[acoustics]], and radio, frequency is usually denoted by a [[Latin]] letter f or by a Greek letter ν (nu).

Revision as of 22:26, 12 December 2020

Lighterstill.jpg

Frequencies.jpg

Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency.

For lessons on the related topic of Attunement, follow this link.

Definitions and units

For cyclical processes, such as rotation, oscillations, or waves, frequency is defined as a number of cycles, or periods, per unit time. In physics and engineering disciplines, such as optics, acoustics, and radio, frequency is usually denoted by a Latin letter f or by a Greek letter ν (nu).

In SI units, the unit of frequency is hertz (Hz), named after the German physicist Heinrich Hertz. For example, 1 Hz means that an event repeats once per second.

A traditional unit of measure used with rotating mechanical devices is the revolutions per minute, abbreviated rpm. 60 rpm equals one hertz.[1]

The period is usually denoted as T, and is the reciprocal of the frequency f:

Frequencyformula.jpg




The SI unit for period is the second.[1]

See also

References

External links