Technology
How a tiny hole can take a picture
HERE’S THE INTERESTING PART
You do not actually need highly expensive, heavily polished glass to take a crisp photo; you just need a microscopic hole and complete darkness. The camera obscura effect proves that light passing through a tiny, precisely punched hole into a completely dark box naturally perfectly projects an inverted image of the outside world onto the back wall. It is the ultimate, incredibly lazy optical physics trick.
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