Hello /sci/ I have a question that has puzzled me for my entire

>>8730949
Usually when we squint our eyes, the eyelashes cause a diffraction pattern similar to the lens flare effect. http://physics.stackexchange.com/questions/34222/squinting-at-street-lights

>>8730949
Think of the double slit experiment. It only starts acting strange when the slits are very small (it wouldn't work with a meter wide slit, for example). Only then does the interference start occurring.
When you squint hard enough, the light that enters your eyes starts acting as if it's going through a narrow slit, and therefore starts interfering with itself (and creating those weird shapes in the process).

>>8730964
That would make parallel lines if it was my eyelashes. Anyways it works when I pull my eyelashes back.

I just looked at this light and there was a dark spot in the inner circle. I blinked my eyes and it was gone. It's hard to keep focus and the shape gets bigger and smaller. Then dark spot appeared again and it looked like it was moving. Suddenly it disappeared and there was three smaller ones where it was. Then two.

https://en.wikipedia.org/wiki/Diffraction

>>8730975
It's not my eyelashes

>>8730983
It doesn't have anything to do with your lashes.

>>8730991
I'm not seeing rays of light in a shape of a star though.