Democritus concluded that all matter was made of tiny indivisible particles, which he named atomos.
370 BCE
Democritus Death
John Dalton Born
Michael Faraday Born
John Dalton created the “marble” model, which states that all matter is made up of atoms. Atoms of the same element are the same, atoms of different elements are different, and atoms combine to form substances.
Britain and the United States separately made the Slave Trade a criminal act.
Michael Faraday discovered that when a permanent magnet was moved in and out of a coil of wire, a current was induced in the coil, also known as electromagnetic induction.
John Dalton Death
Michael Faraday Death
Eugen Goldstein Born
JJ Thomson Born
Robert Millikan Born
Ernest Rutherford Born
Niels Bohr Born
Eugen Goldstein discovered evidence of a positively charged particle
Edwin Schroedinger Born
James Chadwick Born
First commercial film release by Jean Aimé Le Roy.
JJ Thomson created the “plum pudding” model which showed that electrons were dispersed in a positive sphere.
Werner Heisenberg Born
Ernest Rutherford created the “nuclear” model which showed that the atom has a dense, positive center or nucleus, the rest is mostly empty space.
Robert Millikan succeeded in precisely determining the magnitude of the electron's charge.
Niels Bohr created the “Solar system” model which showed that electrons orbit the nucleus at a defined distance (like plants orbiting the sun).
WW1 started in Europe
The Walt Disney Company is founded.
Werner Heisenberg discovered the uncertainty principle, which states that a particle's position and momentum cannot both be known exactly.
Edwin Schroedinger created the “electron cloud” model which showed that electrons are in regions around the nucleus; not tracks surrounding it.
Eugen Goldstein Death
James Chadwick created the “electron cloud” model with neutrons added this model demonstrates neutrons in the nucleolus because the mass of an atom was much heavier then he had thought.
