Some Curiosities You Probably Didn’t Learn in Biology Class

If you look up at a cloudless, bright blue sky and see some wiggly things at the periphery of your vision, you’ve just experienced the blue field entoptic phenomenon. The wiggly things are white blood cells moving in the fine blood vessels moving in front of the retina, at the back of the eye.

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May 21, 2022 | 3:52 pm