Credit & Copyright: Edward H. Adelson, Wikipedia
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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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
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