From New Scientist
It's a model train like no other: when it enters a tunnel, it seems to defy the properties of space and time. But of course, what you're seeing is just an illusion. Do you know what the trick involves?
Courtesy of neuroscientist Al Seckel, the video is free of editing effects or computer-generated imagery. "There is one train; it is as long as you see," he says. The illusion, presented in his newly published digital book that delves into the science of the world's best illusions, continues to fool Nobel laureates and other great minds when presented at conferences.
If you think you know what's happening in the video, let us know in the comments section below. The first person to post a correct answer will win a New Scientist goodie bag
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