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Democritus (400 BC)
All things are made up of atoms. If you break down an object ,eventually, you couldnt't break it down any smaller. Atomos="uncuttable" "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 25 Feb. 2014. -
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Aristotle (400 BC)
He believed that all matter was made of the four elements-fire, earth, air, and water. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 25 Feb. 2014. -
Dalton
He said that matter made of tiny little particles and they all have different masses. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 25 Feb. 2014. -
Thomson
He discovered electrons, he said they were much smaller. He also said there are subatomic particles. He used the Cathode Tube Expirement. -
Rutherford
He discovered atoms had a nucleus. He used the Gold Foil Experiment. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 25 Feb. 2014. -
Bohr
He said that electrons can only more in certain paths. Also outer electrons determine the elements chemical property. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 25 Feb. 2014. -
Heinsenburg and Schrondinger
Schrondinger- He said you could could only desonibe where a electron could be. He made an equation called the Schrondinger equation and it is "the wave equation of non relativitsic quantum mechanics." Heinsenburg- "uncertainty principle"- it is to obtain precise values of both position momentum of a particle at the same time. "Timeline of the Atom." : Erwin Schrodinger. N.p., n.d. Web. 27 Feb. 2014. "Timeline of the Atom." : Erwin Schrodinger. N.p., n.d. Web. 27 Feb. 2014.
