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This clue last appeared in the NYT Crossword on Friday, 21 April 2023.

___ al-Haytham, medieval mathematician called "the father of modern optics"

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mathematicianmedievalhaytham

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This clue appeared in the NYT Crossword on Friday, 21 April 2023. The answer IBN is a 3-letter entry.

What is the answer to "___ al-Haytham, medieval mathematician called "the father of modern optics""?: IBN
How many letters is the answer to "___ al-Haytham, medieval mathematician called "the father of modern optics""?: The answer has 3 letters.
When was this clue last seen?: This clue last appeared in the NYT Crossword crossword on Friday, 21 April 2023.
Has this crossword clue appeared before?: This appears to be a rare or unique clue.

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