- the beginning concepts of Atomism, attributed to Leucippus, were likely discovered early into his career

- however, not much is known of Leucippus' early life and so the date of discovery falls to some time in the early 5th century BC

- the beginning of his work with Democritus, and when Atomism began gather support was when Leucippus founded his school In Abdera around 440-430 BC

Discovery