Phi phenomenon

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

The term phi phenomenon is used in a narrow sense for an apparent motion that is observed if two nearby optical stimuli are presented in alternation with a relatively high frequency. In contrast to beta movement, seen at lower frequencies, the stimuli themselves do not appear to move.

Excerpt from the Wikipedia article “Phi phenomenon”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Cactus26, CC BY-SA 3.0, via Wikimedia Commons.