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Demcritus (400BC)
Hed discovered the atom was the smallest particle of matter.On an observation and natural curiosity"experiments" He thoought it had different sixes and shapes.
Bennet, LIinda. "What Democritus Thought." Democritus Model. N.p., 2013. Web. 23 Feb. 2015. -
Daltonn(1803)
Discovered all matter is made up of atoms,and they aare little and not able to be broken apart.He expanded on the greek idea of the atom."Almost like Democritus but he advanced it by saying we had many different atoms out there. He beliebed it was combined by atomic weight.
Bennet, LIinda. "What Democritus Thought." Democritus Model. N.p., 2013. Web. 23 Feb. 2015. -
Thompson (1897)
He was able to determine the mass to charge ratio for an electron.He knew that the electron came from the atom,It had negative charge and a small mass.He did experiments with positive stuff.
"The Development of the Atomic Model." Dot Physics. Rhett Allain, 4 Sept. 2009. Web. 23 Feb. 2015 -
Rutherford(1909)
He discovered that is, it was roughly the same consistency throughout, with negatively-c harged electrons scattered about in it like raisins in a pudding.
He used the method 'plum pudding'
He thought it looked like raisins in pudding.
"Niels Bohr - Facts." Niels Bohr - Facts. N.p., 1922. Web. 18 Feb. 2015. -
Bhor(1913)
He discovered the revoluting idea that electrons 'jump' between energy levels in a quantum feshion.
His method was shine a light with many differnt colors.
Thought it looked like a rainbow with waves.
"Niels Bohr - Facts." Niels Bohr - Facts. N.p., 1922. Web. 18 Feb. 2015. -
Heisenberg and Schrondinger(1926)
He discovered the electrons obrits emitradation of fixed wave length when jumps between the fixed orbits around a nucleus.
He thought the atom looked like electrons orbiting a postive
"GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.
