Atomic Timeline
Category: Outro
Atualizado: 17 set 2018
Autores
Created byMILLER GRIMSLEY
Attachments
Eventos
John Dalton (1803):
Proposes Atom TheoryMichael Faraday (1838):
Develops electrolysis
(Splitting of molecules with electricity)Lothar Meyer (1864):
Classifies elements into 6 familiesJames Clerk Maxwell (1873):
Proposed electromagnetic fields
filled void between atomsG. J. Stoney (1894):
Proposed the existence of ElectronsErnest Rutherford (1898):
Studied radiation from uranium and
named them alpha and betaErnest Rutherford (1898):
Estimated atom size and concluded mass
was contained in the NucleusMarie Curie (1898):
Studies uranium and thorium and
coined the term radioactivitySoddy (1900):
Discovered Half-LifeHantaro Nagaoka (1903):
Created the Saturnian model of atom.
(flat rings of electrons floating
around positive particle)Hans Geiger (1906):
Creates the Geiger–Müller tubeR.A. Millikan (1909):
Found the charge and mass of an
electron with oil drop expirimentErnest Rutherford (1911):
Gold Foil ExpirementH.G.J. Mosely (1914):
Discovers that the number of protons
equals the atomic numberFrancis William Aston (1919):
Uses atomic spectrograph to
identify 212 isotopesNiels Bohr (1922):
Created atomic model that had
levels of orbiting ringsCockcroft / Walton (1929):
First to created a nuclear reaction
and create alpha particlesJames Chadwick (1932):
discovers existence of Neutrons, which
have a similar mass to protonsLise Meitner, Hahn, Strassman (1938):
Discovered Nuclear FissionEnrico Fermi (1942):
Created first nuclear reactorAntoine Lavoisier (1778):
Wrote first comprehensive list containing 33
elements & classified metals
and non-metalsWilliam Ramsay (1884):
Discovers the Noble Gases
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