Periodicity

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Periodicity is the quality of occurring at regular intervals or periods (in time or space) and can occur in different contexts:

• A clock marks time at periodic intervals.
• A metronome ticks at periodic intervals of time.
• A publication published at periodic intervals can be called a "periodical", for example a magazine.
• In mathematics, a function whose output contains values that repeat periodically is called periodic function.
• In chemistry, a table which classifies elements by means of periodicity is the periodic table.
• In physics, period is the number of cycles as a result of time (time/cycle). The amount of time it takes to complete one full revolution. Period is also the inverse of frequency.
• In music theory, periodicity is described as "predictability gives rise to expectations".
• Standing waves crest at periodic intervals of distance.

The measure of periodicity in time is frequency which has the Metric units of Hertz.

Periodic Table

When used in the periodic table, periodicity is the way in which properties of elements are repeated, depending on their location in the periodic table.

See also

• Cycle
• Simultaneity
• Synchronicityde:Periodizität

nl:Periodiek (tijd)

Wikipedia information about Periodicity This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Periodicity". It may not have been reviewed by professional editors (see full disclaimer). Help contribute to Americola and edit this article.