Famous Died Guy Scientist

Thales of Miletus 600BC

101

600 B.C.
Thought all life came from water, and thought water was an original atom.

Democritus- 460 B.C.- 370 B.C.

101

460- 370 B.C.
Thinking there was an Atom and it looked like just a ball.

Aritotle- 384BC- 322BC

101

384- 322 B.C.
Did not belive in the Atomic theroy.

Sir Isaac Newton

Oct 4, 1704

He had no experiment.
He thought atoms were just particles and the picture of the atom was just a ball.

Dalton

Oct 4, 1803

Around 1803
There was no experiment
His main Contrubrition was that he spent 46 years studying and came up with the atomic theroy.
And the Picture was just a ball.

Antoine Henri Becquerel

Oct 4, 1806

The experment that Becquerel had was Urimue. His main Contrubrition was discovered radioactivity in 1896.

J.J. Thomson

Oct 4, 1897

The experment that J.J. Thomson did was the Cathode Rays Tube.
He discovered the electrons.

Ernest Rutherford

Oct 4, 1904

1904-1911
The name of the experement was The Gold Foil.
His main contrubrition was the atoms contain a nucleus, made of protons, surrounded by electrons.

Robert Millikan

Oct 4, 1908

The year was 1908- 1917.
The Experiment name is the Oil Drop.
His main contrudritions are he determinging the charge and mass of an electron, and he contrubrited to the atom between 1908 and 1917.

Bohr

Oct 4, 1915

The experment name id Bohr.
Main Contrubrition was that electrons are on fixed paths, and the experiment Bohr was not completed.

Aston

Oct 4, 1922

The name of the experment that Aston had was the Bohr Atom. His main contrubrition was that he discovered the isotope using a mass spectrometer.

Schrodinger

Oct 4, 1926

The Experment name is The Quantum Modle.
The Main Contrubrition is the Quantum Modle.

James Chadwick

Oct 4, 1932

The Experment name is the Bohr Modle.
His main contrubritionsare that he discovered evidence towards the modle, and existance ofNeutrons.