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I discovered it when I was about 5. I was in school and there was some kind of performance on a stage and I couldn't see it too well. I discovered that if I squinted my eyes, it looked more clear. But I could only squint so much before my eyelids would close. Then I thought if the squinting worked, maybe I could make something smaller to look through with my fingers, and I did, and it worked. Eventually I ended up getting glasses and then contacts but that pinhole solution carried me over until I did. Seeing in the classroom wasn't as bad, since things weren't as far away as that stage was, and I usually sat in the front row.
originally posted by: Doxanoxa
a reply to: Terpene
Like a couple of responses I found this out in childhood to, I'd be 12 or so.
So, I have a sense kids maybe discover this as a 'coping strategy' that adults don't need. My question is how do kids discover this? I can't remember!
Ever heard of a "pinhole camera"? Turns out a pinhole can act like a lens. There's an interesting demonstration here which is compared to pinhole cameras near the end:
Also, why does it work at all?
When sunlight shines through a small hole, it casts a circular image on the wall regardless of the shape of the hole. The size of the hole also doesn't affect the size of the image. This counterintuitive demonstration shows that the hole is acting like a pinhole camera, producing an image of the sun on the wall. Therefore the size and shape of the hole have no effect on the size and shape of the image.