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  • Our perception of the world around us is strongly linked to our vision.

  • But how do you know what you're seeing is real? Can you really trust your eyes?

  • Take for example these two grey rectangular columns, both of which are different shades of grey. Or are they?

  • It turns out that they're the exact same.

  • And yet, even after knowing the illusion is there, your eyes refused to see them as the same.

  • Introducing colors produces the same result.

  • I promise, no trick photography or editing effects have been applied.

  • In fact, if you look up the Munker-White illusion, you'll come across many more examples.

  • Examine them in Photoshop and you can see that the colors are the exact same.

  • A similar effect can be seen with this checkerboard illusion.

  • Tile A clearly seems darker than tile B. But you know better by now, right?

  • Even though your eyes can't see it, you know when I removed the surrounding imagery

  • the tiles will be the same color. So what's going on here?

  • The truth is that scientists don't fully understand this phenomenon, and there are many complex biological and neurological factors taking place.

  • Ultimately, our brains judge color and brightness in context.

  • In other words, our brains compare the surrounding environment in order to create our perception.

  • The purpose of our senses or eyes in this case is not to provide us with an absolute color or physical property of our external reality,

  • but to interpret what we see as efficiently as possible in order to interact with our environment most appropriately.

  • The tile illusion takes advantage of this phenomenon.

  • Our brains know that shadows make objects look darker, as a result the brain compensates by interpreting the tile as being lighter than it appears until we take the shadow away.

  • Perhaps, the most blatant example is this gradient.

  • The middle bar is simply one color.

  • Remove the background gradient and it becomes obvious. Once again, the darkness of the background has affected our perception of the bar's color.

  • Our perception is relative.

  • So do you still trust your eyes?

  • Got a burning question you want answered?

  • Ask it in the comments, or on Facebook and Twitter and subscribe for more weekly science videos.

Our perception of the world around us is strongly linked to our vision.

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Can You Trust Your Eyes?

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    卡哇伊 posted on 2021/06/05
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