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ALI IBN ISA

(Redirected from Ali Ben Isa)
'Ali Ben Isa' () was an Arab astronomer in the 9th century.
Together with Chalid Ben Abdulmelik in 827, he measured the Earth's circumference, getting a result of 40,248 km (or, according to other sources, 41,436 km).

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See also

See also



★ List of Arab scientists and scholars

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