Do YOU see the Union flag? Optical illusion tricks your eyes into seeing red, blue and white
A resurfaced optical illusion video designed to show how colour blind people see has left social media users in awe. The BBC Horizon clip, originally broadcast in 1985 and shared to the BBC Archive Twitter and Facebook page this week, features a green, yellow and black version of the Union flag. In the centre of the flag pattern is a black dot, and the narrator urges viewers to stare at the dot for 20 seconds before the image disappears. Despite the screen that subsequently appears being blank, most people will see the Union flag in its traditional red, blue and white colours.
Source: dailymail.co.uk