Train track illusion is baffling the Internet
April 9, 2016 | 52 comments
Are these two track pieces really the same size ? Image Credit: Twitter / Marc Blank-Settle
A remarkable optical illusion posted on Twitter has left many Internet users scratching their heads.
When are two identical wooden track pieces not identical ? That is the question that has been freaking out the Internet this week thanks to a mind-bending new Twitter video.
Posted by Marc Blank-Settle, the footage shows two seemingly identical track parts being stacked on top of one another and then laid out side-by-side. While stacked up the parts appear to be the same, but when shown side-by-side one suddenly appears to be much larger than the other.
Far from being a magic trick however, the phenomenon is actually a well known optical illusion first described by psychologist Joseph Jastrow more than 100 years ago.
The two track pieces are of course identical, but when placed side-by-side the longer side of one contrasts with the shorter side of the other to make them look as though they are different sizes.
Source: Huffington Post
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