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Try staring at this image of a black bulb for at least 30 seconds, before looking away at a white screen or page.
The light bulb will appear as a glowing white bulb, with the element becoming dark inside it.
Our brains decipher negative and positive images in an interesting way. As with The Face of Jesus and The Queen?s face, we reverse the negative image and turn it into positive. With the light bulb illusion, the glass of the bulb is a large area of black, so that when we look away, the reversal results in a dazzling bulb.
Stare at the black lightbulb for at least 30 seconds.
Then immediately stare at a white area on the screen
or at a sheet of paper. You should see a glowing light bulb!
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