Natural philosophy
Main article: Natural philosophy
Natural philosophy has its origins in Greece during the Archaic period, (650 BC – 480 BC), when Pre-Socratic philosophers like Thales rejected non-naturalistic explanations for natural phenomena and proclaimed that every event had a natural cause.[12] They proposed ideas verified by reason and observation, and many of their hypotheses proved successful in experiment;[13] for example, atomism was found to be correct approximately 2000 years after it was first proposed by Leucippus and his pupil Democritus.