Explanation: Are squares A and B the same color? They are! To verify this, either run your cursor over the image or click here to see them connected. The featured illusion, an example of the same color illusion, illustrates that purely human perceptions in science may be ambiguous or inaccurate, even such a seemingly direct perception as relative color. Similar illusions exist on the sky, such as the size of the Moon near the horizon, or the apparent shapes of astronomical objects. The advent of automated, reproducible measuring devices such as CCDs have made science in general and astronomy in particular less prone to, but not free of, human-biased illusions.

APOD Year in Review (2023): RJN's Night Sky Network Lecture

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: nablyudeniya Publikacii so slovami: nablyudeniya
Sm. takzhe: Illyuziya odinakovyh cvetov Kuda soobshat' o "letayushih tarelkah"? Novyi proekt v ramkah MGA2009. Letnee nebo Astronomicheskogo goroda Astronomicheskaya nedelya s 9 po 15 aprelya 2007 goda Astronomicheskaya nedelya s 30 oktyabrya po 5 noyabrya 2006 goda Astronomicheskaya nedelya s 16 po 22 oktyabrya 2006 goda Astronomicheskii kalendar' na 2007 god Vse publikacii na tu zhe temu >>