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Isaac Newton
Issac Newton had a proposition that the universe was composed with small solid masses in motion -
dalton model
John Dalton pictures atoms as small, indestructible particles with no interal structure. John Dalton was born on September 6, 1766 in Cockermouth and died on July 27, 1844 in Manchester. He was an English chemist, meteorologist and physicist. He was awarded with the Royal Medal. -
Thomson model
Thomson model is also known as thee "plum pudding" model. He thought electrons was tightly surrounded in a sphere of positive electrical charge. John Joseph Thomson was a British physicist and Nobel laureate. He was awarded with the Nobel Prize in Physics and Copley Medal. He was born on December 18, 1856 in Cheetham Hill and died on August 30, 1940 at Cambridge. -
Hantaro Nagaoka
A Japanese physicist by the name of Hantaro Nagaoka suggested that a atom has a central nucleus. Electrons move in orbits like the rings aroud Saturn. He was born on August 15, 1865 in Nagasaki and died on December 11, 1950 in Tokyo. He went to school at Tokyo University. Hantaro Nagaoka was the world’s first scientist to present a Saturnian model of the atom. -
Rutherford model
Rutherford finds that an atom has a small, dense, positively charged nucleus. Ernest Rutherford was born in New Zealand. He is a British chemist and physicist who became known as the father of nuclear physics. He is considered the greatest experimentalist since Michael Faraday(an English scientist who contributed to the fields of electromagnetism and electrochemistry). Rutherford was born on August 30, 1871 at Brightwater and died on October 19, 1937 at Cambridge. -
Nucleus
Rutherfod suggested that the nucleus was a small dense positivley charged structure that was located in the center of an atom -
Bohr model
in this model, the electron moves in a circular orbit at fixed distances from the nucleus. The person who founded this model was Niels Henrik David Bohr. He was a Danish physicist. He made the base of contributions to understanding atomic structure and quantum mechanics. He was awarded the Nobel Prize in Physics in 1922 for that. He was born on October 7, 1885 in Copenhagen and died on November 18, 1962 at the same place he was born. -
Louis de Brogile
A french physicist who goes by the name of Louis de Brogile, proposed that moving particles like electrons have some properties of wave. In a few years, experimental evidence supports the idea. He passed away when he was 94. Louis was born on August 15, 1892 in Dieppe and died took his last breathe on March 19, 1897 in Louveciennes. He studied at the University of Paris and wrote a book called an introduction to the study of wave mechanics. -
Electron cloud model
The person who created this model was Erwin Schrodinger. He develops mathematical equations to describe the motion of electrons in atoms. Erwin's whole name was Erwin Rudolf Josef AlexanderSchrodinger. was an Austrian physicist. He created a number of fundamental answers in the field of quantum theory. He was born on August 12, 1887 in Vienna and died on January 4, 1961 at the same place. -
James Chadwick
James Chadwick was an English physicist who confirmed the existence of neutrons which have no charge. Atomic nuclei have neutrons and positively charged protons. He died on July 24, 1974 in Cambridge and was born on October 20, 1891 in Bollington. James was awarded Nobel Prize in Physics, Copley Medal, and Franklin Medal. -
Neutron
James Chadwick discovered a sub atomic particle similar to an proton. He used alpha particles to determine that these sub atomic particles had a neutral charge . He called these particles neutrons. -
Atomic bomb
The atomic bomb is also known as the "A-Bomb". The A-Bomb is a nuclear weapon. "A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion". A fission bomb is an atomic bomb. The first bomb test released the same amount of energy as 20,000 tons of TNT.
