Bion from Abdera

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Bion von Abdera ( ancient Greek Βίων ) was a Greek mathematician and philosopher from Abdera . His life dates are uncertain.

After Diogenes Laertios, Bion was a pupil of Democritus , who also came from Abdera, and wrote in both Ionic and Attic Greek . He was the first to conclude from the dependence of the length of the day on the season and the geographical latitude that there is a place where day and night lasted six months each.

Strabon mentions an astronomer Bion, who was considered an expert on winds. Most likely it is referring to the same person.

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  • Diogenes Laertios, Lives and Opinions of Famous Philosophers 4,58.
  • Strabon, geography 1,2,21.

literature