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Greek
philosopher and scientist Aristotle (384-322 B.C.)
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comments on
pinhole image formation in his work “Problems”.
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He asks his
readers: "Why is it that an eclipse of the sun, if
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one looks at
it through a sieve or through leaves, such as a
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plane-tree
or other broadleaved tree, or if one joins the
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fingers of
one hand over the fingers of the other, the rays are
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crescent-shaped
where they reach the earth? Is it for the
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same reason
as that when light shines through a rectangular
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peep-hole, it appears
circular in the form of a cone?”
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Aristotle found
no satisfactory explanations to his observation
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and the problem
remained unresolved until the 16th century.
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