from NYT > Sports http://ift.tt/1M1KWaG
Friday, October 30, 2015
Do You Experience the Waterfall Effect?
Test yourself with this video. It’s a subtle optical illusion that sometimes happens to marathon fans. After someone cheers for runners for a long time, stationary objects may appear to move.
from NYT > Sports http://ift.tt/1M1KWaG
from NYT > Sports http://ift.tt/1M1KWaG
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