1. In the early 1800s, John Dalton formulated his atomic theory in Manchester.

2. ‘He was not an Atomist in the mould of Democritus, but he did conceive of atom-like fundamental particles of the four Empedoclean elements.’ ‘But whereas the Greek Atomists had to guess and imagine, John Dalton, a Quaker and a chemist, used modern scientific reasoning.’

3. ‘He was not an Atomist in the mould of Democritus, but he did conceive of atom-like fundamental particles of the four Empedoclean elements.’ ‘But whereas the Greek Atomists had to guess and imagine, John Dalton, a Quaker and a chemist, used modern scientific reasoning.’