MOST of us have no problems seeing the world in its full technicoloured glory.
But the same can’t be said for the 1 in 12 blokes and 1 in 200 women in the UK who are colourblind.
Way back in the era of crimping and shoulder pads the BBC created a short video optical illusion to help us better understand how colour blindness works.
Despite the clip being created in 1985, it is still absolutely mind-blowing today.
It was first broadcast as part of BBC’s Horizon programme, but has recently resurfaced as it was tweeted by the BBC archive.
The video features the familiar Union Jack flag only instead of red, white and blue its in green, yellow and black.
In the centre of the flag is a black dot which viewers are told to watch for 20 seconds before the screen goes completely white.
At this point you should see the flag in it’s original colours appear before your eyes.
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The narrator explained that this is due to the “three receptor phenomena” which forces other colour receptors to take over when some “start to tire”.
Twitter users were amazed by the results of the illusion.
One person said: “That Union Jack trick still freaks me out to this day!”.
While another said: “Brilliant. It definitely works, I was able to see the Union Flag!”