Black drop effect

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

The black drop effect is an optical phenomenon visible during a transit of Venus and, to a lesser extent, a transit of Mercury.

Excerpt from the Wikipedia article “Black drop effect”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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