NASA Astronomy Picture Of The Day
The Same Color Illusion
The Same Color Illusion
Credit: Edward H. Adelson,
Wikipedia
Explanation: Are square A and B the same color? They are. Are too. To verify this, click
here to see them connected. The
above illusion, called the
same color illusion, illustrates that purely human observations 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.
(Via
NASA)
The Same Color Illusion
