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1803 BCE
John Dalton
He suggested that matter is made up of small discrete particles which are like solid balls -
Period: 460 BCE to 322 BCE
Aristotle
He hypthesised that all matter has a continuous composition that can be broken down in to smaller and smaller pieces. -
460
Democritus
He was a Greek philosopher. He hypothesised that all matter is made up of tiny discrete particles called atoms which are too small to be seen. -
460
Aristotle
Ancient Greek philosopher Aristotle was born circa 384 B.C. in Stagira, Greece. When he turned 17, he enrolled in Plato's Academy. In 338, he began tutoring Alexander the Great. In 335, Aristotle founded his own school, the Lyceum, in Athens, where he spent most of the rest of his life studying, teaching and writing. -
Period: to
John Dalton
John Dalton FRS was an English chemist, physicist, and meteorologist. He is best known for his pioneering work in the development of modern atomic theory; and his research into colour blindness, sometimes referred to as Daltonism, in his honour.