Your Eyes Are Deceiving You

Chris Said brings us this stunning example of the Müller-Lyer illusion (previously at Neatorama). The colored lines are the same length throughout; only the angle of the arrows change. If you don’t believe it, put a straight edge up against your screen. You can see more examples of this type of illusion at Laughing Squid.  -via Nag on the Lake

Source: neatorama