Periodicity is the quality of occurring at regular intervals (e.g. of time) and can occur in different contexts: A watch Attempting to understand time has long been a prime occupation for philosophers, scientists and artists. ...

• A clock marks time at periodic intervals.
• A metronome ticks at periodic intervals.
• A publication published at periodic intervals can be called a "periodical", though it can also be called magazine.
• In mathematics, a function which recurs 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(cycles/time). The ammount of time it takes to complete one full revoloution. Period is also the inverse of frequency.

The measure of periodicity is frequency. To meet Wikipedias quality standards, this article or section may require cleanup. ... A mechanical wind-up metronome in motion A digital metronome set to pulse at four beats per measure at a tempo of 130 BPM For other uses of this term, see Metronome (disambiguation). ... A collection of magazines A magazine is a periodical publication containing a variety of articles, generally financed by advertising and/or purchase by readers. ... Mathematics is often defined as the study of topics such as quantity, structure, space, and change. ... Partial plot of a function f. ... In mathematics, a periodic function is a function that repeats its values after some definite period has been added to its independent variable. ... Chemistry (derived from the Arabic word kimia, alchemy, where al is Arabic for the) is the science of matter that deals with the composition, structure, and properties of substances and with the transformations that they undergo. ... The periodic table of the chemical elements, also called the Mendeleev periodic table, is a tabular display of chemical elements, first created in 1869 by Russian chemist Dmitri Mendeleev. ... A black hole concept drawing by NASA. Physics (from the Greek, φυσικός (physikos), natural, and φύσις (physis), nature) is the science of the natural world dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces. ... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ...

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

• Simultaneity
• Synchronicity

molecular bonding Simultaneity is the property of two events happening at the same time in at least ONE Reference frame. ... Synchronicity is a word coined by the Swiss psychologist Carl Gustav Jung to describe the temporally coincident occurences of acausal events. ...