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Isaac Newton
Proposed a mechanical universe with a small solid masses in motion -
Benjamin Franklin
He Made the positive charge a pluse sign (+) and and negative sign (-) -
John Dalton
The matter is made of atoms, you cant see atoms there indivisible.Atoms are giving a element are the same in mass and propertiesCompounds are made by combination of to different types of atoms.Atoms cant be destroyed -
Michael Faraday
Michael Faraday studied the effect of splitting of molecules with electricity. -
Joseph John Thomson
A atom is shaped as a sphere of a positive charge with negatively chred electron embedded in it.Postive and negative charges in the atom are the same magnitude, due to a atom is electrically neutral is had no negative or positive charge -
Nagaoka
Saturnain model of a atom with right of electrons moving around with a positively charged particle -
Robert Millikan
Robert Millikan put a tiny drop of oli and messure how strong applied electric field. Be determined the charge on an electron -
Ernest Rutherford
Ernest Rutherford discovered the atomic nucleus -
Neils Bohr
The planetary model was proposed by Bohr after studying a hydrogen atom in 1915 -
James Clerk Maxwell
Proposed electric magnetic fields filled with void -
De Broglie
De Broglie Discovered that electrons had a dual nature simular to both particles and waves. -
Schrodinger
He Viwed Elrons and continuous clouds and brought in wave mechanics as a mathematical model of a atom -
James Chadwick
James Chadwick discovered a neutral atom particle with a mass close to a proton. -
Enrico Fermi
Enrico Fermi Conducted the first controlled chain reaction releasing engergly from atoms nucleus -
Democritus
Democritus was born on 460 BC and died on 370 BC he was born in adbera, ThraceThis theory was That the atom is very small can not be indivisible.