History of the atom
Category: Other
Updated: 6 Nov 2018
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Created bySeth Christenson
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Democritus
Born in 460 B.C.E. in Abdera, Greece.
Died in 370 B.C.E.
Adopted his model of the atom in 422 B.C.E.Name: John Dalton
Born: September 6, 1766
Died: July 26, 1844
From: Eaglesfield,England
Introduced the atomic theory into chemistryAntoine Lavoisier
Lavoisier was a French
nobleman that founded several
elements and put the first table of elements together.Joseph John Thomson
Born December 18, 1856, near Manchester, England
Died August 30, 1940, In Cambridge, England
J.J. Thomson first studied
experimental physics
and math at Manchester
university and then went to Cambridge.
He also started the
theory of electromagnetism
and found the electron
using his cathode ray tube.
He also predicted of a
particle like the proton.Ernest Rutherford
Born: August 30, 1871
Died: October 19, 1937
From:New Zealand, United Kingdom
Rutherford discovered nucleus (dense + charge) and atoms are mostly empty space.Marie Curie
Born in Warsaw, Poland on November 7th, 1867.
Died in Sallanches, France on July 4th, 1934.
Discovered that radioactivity occured in elements other than uranium.Max Planck
Born April 23, 1858, in Kiel, Schleswig
Died October 4, 1947, in Gottingen, Germany
Studied at the University of
Munich learning about physics
and math. Later he would
discover the Quantum
Theory which explains
a lot of atomic and
subatomic processes.Albert Einstein
born at Ulm, in Württemberg, Germany, on March 14, 1879.
In 1905, Albert Einstein expanded
on Planck's theory of the photoelectric
effect by introducing the radical idea
that electromagnetic radiation
has a dual wave particle.Robert Mallikan
Born: Mar 22, 1868
Died: Dec 19, 1953
From: Morrison, Illinois
determined the charge and mass of an electronHenry Moseley
Born in Weymouth, England and November 23, 1887.
Died August 10th, 1915 in combat in Gallipoli, Turkey.
Discovered that an element was determined by the number of protons.Niels Bohr
Born October 7 1885 in Denmark and died on November 16 1964
Bohr developed the Bohr model
of the atom, in which he proposed
that energy levels of electrons are
discrete and that the electrons revolve
in stable orbits around the atomic
nucleus but can jump from one energy level (or orbit) to another.Louis de Broglie
Louis-Victor de Broglie was born
at Dieppe on 15th August 1892, the son
of Victor, Duc de Broglie and Pauline
d'Armaille. He gained his science degree
in 1913. In 1927 his theory was congirmed by
discovery of electron diffraction by crystals.Erwin Schrödinger
born on 12 August 1887, Vienna, Austria,
and died on 4 January 1961, in Vienna, Austria
Attended Berlin University, Berlin, Germany,
and studied in quantum mechanics.
Awarded "for the discovery of new productive
forms of atomic theory". With the Niels Bohr theory,
in 1926 Erwin Schrödinger formulated a wave equation that
accurately calculated the energy levels of electrons in atoms.Werner Heisenberg
was born on 5th December, 1901, at Wurzburg.
He was the son of Dr.
August Heisenberg and his wife
Annie Wecklein. Went to the
Maximilian school at Munich until 1920,
then went to the University of Munich to study physics.
After working with Niels Bohr in 1927, he was appointed
professor of Theoretical Physics at the University of Leipzig.
In 1953 became President of the Alexander Von Humboldt foundationJames Chadwick
James chadwick was a British scientist
that was born on October 20 1981
born in Bollington and died on july 24 1974.
Discovery of neutron is Chadwick’s greatest work.
It not only contributed to the better understanding of
nucleus, but also paved the way towards the fission
of Uranium 235, which ultimately
led to the creation of the atomic bomb.
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