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For the movie, see Phenomenon (film)

A phenomenon (Greek: φαινόμενoν, phainomenon, from the verb φαίνειν, phainein, to show, shine, appear, to be manifest or manifest itself, plural phenomena),<ref name="Dictionary">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> is any thing which manifests itself. Phenomena are often, but not always, understood as "things that appear" or "experiences" for a sentient being, or in principle may be so.

The term came into its modern philosophical usage through Immanuel Kant, who contrasted it with the noumenon. In contrast to a phenomenon, a noumenon is not directly accessible to observation. Kant was heavily influenced by Leibniz in this part of his philosophy, in which phenomenon and noumenon serve as interrelated technical terms.

Cloud chamber phenomena. Scientists use phenomena to refine some hypotheses and sometimes to disprove a theory. See also Animated Version.

Phenomenon sections
Intro  Modern philosophical usage  Scientific  Mechanical  Gem  Group and social  Popular usage   See also   References  External links  

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