apart from this theory, what were his other contributions to science?
Colour blindness.
Introduction
He is best known for introducing the atomic theory into chemistry, and for his research into colour blindness, sometimes referred to as Daltonism in his honour.
when was the idea of an atom first developed describe this theory According to this idea, if one were to take a lump of matter and cut it into ever smaller pieces, one would eventually reach a point where the pieces could not be further cut into anything smaller. who talked about this theory for the first time? John Dalton
He contributed 117 "Memoirs of the Literary and Philosophical Society of Manchester" from 1817 until his death in 1844 while president of that organisation. He is best known for his research into colour blindness, sometimes referred to as Daltonism in his honour. His research into colour blindness.
John Dalton John Dalton John Dalton
Other publications Introduction Introduction
He contributed 117 "Memoirs of the Literary and Philosophical Society of Manchester" from 1817 until his death in 1844 while president of that organisation.  . He is best known for introducing the atomic theory into chemistry, and for his research into colour blindness, sometimes referred to as Daltonism in his honour. and for his research into colour blindness, sometimes referred to as Daltonism in his honour.
wiki:11611909
John Dalton [SEP] Introduction
John Dalton (; 6 September 1766 – 27 July 1844) was an English chemist, physicist, and meteorologist. He is best known for introducing the atomic theory into chemistry, and for his research into colour blindness, sometimes referred to as Daltonism in his honour.