1800's
John Dalton. He put forward the atomic theory in 1808.
Dalton's Atomic Theory
They both thought the same theory but Dalton had evidence to prove it, unlike Democritus.
john dalton developed the atomic theory , which he published in 1803
Dalton proposed it in Dalton's atomic theory (i think)
John Dalton developed the atomic theory.
The third principle of Dalton atomic theory is no supported.
Atomic theory was founded by John Dalton. He proved this theory in 1803.
No b/c Thomson discovered that atoms can be cut. He found this out while studying rays traveling between charged metal plates in a vacuum tube. He discovered that the rays were consisted of negatively charged particles. He had just discovered electrons. He discovered all of this on a trip from America. Since electrons are so small, he believed that they could only be from inside of the atom. Since Thomson's discovery of the electron, John Dalton's theory that atoms are indivisible had to be changed.
John Dalton first pursued research into atomic theory. He was the first person to propose the existence of the atomic structure.
yes it was Dalton's Theory
John Dalton was BEST remembered for his pioneering work in the development of modern atomic theory.