You have probably been familiar with one of the most popular optical illusions for almost ten years (my God, how time flies!) - it has even become a world-famous meme. Yes, that same dress from Tumblr that some people saw as white and gold, while others confidently claimed that it was blue and black.

Then, however, experts found out that the phenomenon was most likely related to the processing of the photo, as a result of which the white balance was disturbed - and different people began to see colors differently. For example, Taylor Swift, Demi Lovato and Justin Bieber thought that the dress was black and blue, but Julianne Moore and Sarah Hyland saw it as white and gold.

By the way, if you still don’t know, in fact, the dress is bright blue with black lace stripes...

"Optical illusions have actually been widely known to scientists and artists for at least several centuries," says Valery Bolgan, a historian and editor-in-chief of the Intent news agency from Ukraine, whom Bored Panda asked for a comment here. "For example, the great Spanish artist Salvador Dali actively used this phenomenon in his paintings."

"You can just look at the famous painting called Swans Reflecting Elephants, where the surreal view is emphasized by a kind of optical illusion. Another famous illusion that many of us may have encountered is the so-called 'Ames room'."

"American ophthalmologist Albert Ames designed it in the middle of the 20th century. It is a room in the form of a trapezoid, which is nevertheless perceived as rectangular. As a result, a person standing in one corner of it seems much smaller than the one standing in the opposite corner. An optical effect that is actively used in many attractions," Valery notes.

And the effect of optical illusion is also very popular with street artists these days, skillfully disguising an ordinary road or sidewalk as a staircase, parapet or even an entire dungeon. Bored Panda has written about the works of such masters more than once or twice - and every time it causes a real wave of admiration.

Well, we won't distract you any further from these beautiful optical illusions and the questions associated with them. By the way, if you have an answer to the question asked in that very picture with the sloth from Zootopia, you can leave it in the comments under this post. The correct answer is right here, only upside down. So just enjoy watching, reading and probably quizzing!

˙ʇɥƃıl :sı ɹǝʍsuɐ ʇɔǝɹɹoɔ ǝɥʇ