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April 1, 2024
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Developement of the Atom
Creado
Jordan Tang
⟶ Actualizado 19 feb 2018 ⟶
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Eventos
Antoine Laurent Lavoisier proposes 'law of conservation of mass'
Joseph Proust proposes the 'law of definite properties
Michael Faraday proposes atoms have electrical properties
Karl Ferdinand Braun develops the first CRT
JJ Thompson discovers cathode rays aren't radiation, but a beam of negatively charged particles
modifies CRT to get 1st quantitative measure of cathode rays
Thompson proposes his 'plum pudding' atom model
Rutherford proposes his updated atomic model
Hans Geiger and Ernest Marsden observe from Rutherford's experiment the nucleus is only 1/2 the atoms mass
James Chadwick identifies neutrons as product of alpha particle bombardment on beryllium
Niels Bohr proposes electrons do orbit the nucleus, but only in fixed radii
Murray Gell-Mann and George Zweig discover quarks
Períodos
John Dalton formulates and presents his atomic theory
Ernest Rutheford conducts his gold foil experiment