You think you can see the cutting edge of a knife, but you really can’t

By Jesus Diaz

You think you can see the cutting edge of a knife, but you really can't

Hookai. So I just saw this video by our friend Nikola Slavkovic, and my mind exploded. Because what I thought I was seeing, I actually can’t see. I thought I could see the cutting edge of a knife but, in reality, it is invisible. Our eyes can’t see it because they can’t see something so small—much smaller than a red blood cell.

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Source:: http://feeds.gawker.com/~r/gizmodo/full/~3/QFQu_c43ED4/you-think-you-can-see-the-cutting-edge-of-a-knife-but-1674722816

      

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