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460 BCE
Democritus was born
He lived in Abdera. -
442 BCE
Democritus created his model of the atom.
His theory was based on matter and his ideas were based on reasoning rather than science. -
370 BCE
Democritus died.
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Antoine Lavoisier was born
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John Dalton was born.
United Kingdom -
Lavoisier proposed Combustion Theory which was based on sound mass measurements.
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Lavoisier died.
He was behead. -
Dalton developed Atomic Theory.
He based his theories of partial pressure on the idea that only like atoms in a mixture of gases repel one another. -
Dalton died.
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Max Planck was born.
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J.J. Thomson was born.
Cheetham Hill -
Marie Curie was born.
Poland -
Robert Millikan was born.
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Ernest Rutherford was born.
New Zealand -
Albert Einstein was born
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Niel Bohr was born.
Denmark -
Erwin Schrodinger was born.
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Thomson discovered that neon was composed of two different kinds of atoms.
He studied cathode rays. -
James Chadwick was born
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Louis De Broglie was born.
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Curie discovered radioactivity.
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Rutherford discovered the electron.
He studied the effects of X-Rays on the conductivity of gases, resulting in a paper about dividing atoms and molecules into ions. -
Planck discovered energy quanta.
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Werner Heisenberg was born.
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Millikan used the oil drop method to discover the charge of an electron.
He began by measuring the course of charged water droplets in the electric field. -
Bohr made contributions to understanding atomic structure
He realized that electrons should move around the nuclues but only in proscribed orbits. -
Einstein developed the theory of relativity.
It was first developed in 1905 but was later republished as the Special theory of Relativity -
Einstein developed the Theory of Relativity
He proposes that all motion is relative and nothing can be said to be truly stationary -
Broglie suggested that all matter has wave properties.
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Schrodinger believed atomic spectra should really be determined by an eigenvalue problem.
He was Planck's successor. -
Werner proposed the "uncertainty relation", setting limits for how precisely the position and velocity of a particle can simultaneously determine.
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Chadwick found the neutron.
He used scattered data to find the masses of a neutral particle. -
Curie died.
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Rutherford died.
His nickname was crocodile. -
Thompson died.
He was buried next to Isaac Newton and Charles Darwin. -
Max Planck died.
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Millikan died.
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Einstien died.
United States -
Schrodinger died.
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Bohrs died.
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Borhs died.
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Chadwick died.
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Heisenberg died.
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Broglie died.
