History of An Atom-Lydia, Anvi, & Bry Bell 3



Approx. 460 BC

Democritus was born in Abdera and lived from 460 BCE to 370 BCE. He is said to have traveled to Egypt, Ethiopia, Persia, and India in his life before returning to Abdera. In his work, he expanded the atomic theory of Leucippus. He also argued the eternity of existing nature, of void space and of motions.

Antoine Lavoisier

Approx. 1743

Antoine Lavoisier lived from 1743 to 1794. He was a wealthy Parisian lawyer. Aside from his job as a lawyer, he succeeded in producing more and better gunpowder by increasing the suppl and ensuring the purity of the ingredients. Characteristic of Lavoisier's chemistry was his systematic determination of the weights of reagents and products involved in chemical reactions

John Dalton

Approx. 1766

John Dalton lived from 1766 to 1844. He was from a Quaker family in Cumberland, England. He discovered that all matter is made up of atoms along with many other discoveries that he made.

J.J. Thomson

Approx. December 18, 1856

J.J. Thomson was born December 18, 1856 and died August 30, 1940. He was the head of the Cavendish Laboratory. He discovered the electron, the Isotope and the Sub Botanic Model. He attended 5 different colleges, University of Manchester, University of Cambridge, Victoria University of Manchester, Trinity College, Cambridge

Max Planck

Approx. April 23, 1858

Max Planck was born April 23, 1858 and died October 4, 1947. He was from Kiel, Germany. He received one Nobel Prize in 1919. Introducing the theory of "quanta", that is, that radiation consists of quanta with specific energies determined by a new fundamental constant

Marie Curie

Approx. November 7, 1867

Marie Curie was born November 7, 1867 and died July 4, 1934. She was from Warsaw, Russian Empire which today is Poland. With Pierre Curie she was able to extract 2 previously unknown elements, polonium and radium from the radioactive material. In 1910 she successfully produced radium as a pure metal which proved the new element’s existence beyond doubt. She won 2 Nobel Prizes one in 1903 and the other in 1911. She documented the properties of the radioactive elements and their compounds

Robert Millikan

Approx. March 22, 1868

Robert Millikan was born March 22, 1868 and died December 19, 1953. He was an American experimental physicist and he won the Nobel Prize for physics in 1923. He was known for Charge of the Electron, Photoelectric effect, Cosmic ray physics. He won over 5 awards.

Ernest Rutherford

Approx. August 30, 1871

Ernest Rutherford was born August 30, 1871 and died October 19, 1937. He was the "1st Baron Rutherford of Nelson." He was also a New Zealand born British physicist who became known as the "Father or Nuclear Physics." He discovered the Proton, the Rutherford Model, and the Atomic Nucleus.

Albert Einstein

Approx. March 14, 1879

Albert Einstein was born on March 14, 1879 and died April 18, 1955. He was from Wurtemberg. In 1921, he won the Nobel Prize for physics for his explanation of the photoelectric effect.Einstein first proposed a special theory of relativity in 1905 in his paper, “On the Electrodynamics of Moving Bodies”. Einstein’s 1905 paper on the matter/energy relationship proposed the equation E=MC2: energy of a body (E) is equal to the mass (M) of that body times the speed of light squared (C2). This equation suggested that tiny particles of matter could be converted into huge amounts of energy, a discovery that heralded atomic power.

Niels Bohr

Approx. October 7, 1885

Niels Bohr was born October 7, 1885 and died November 18, 1962. He was a Danish physicist. He made foundation contributions to understanding atomic structure and quantum theory. He won the Nobel Prize in 1922. He went to the university of Copenhagen

Erwin Schrodinger

Approx. August 12, 1887

Erwin Schrodinger was born August 12, 1887 and died January 4, 1961. He was an Austrian physicist. He won one Nobel Prize and he also attended the University of Vienna. In his work he developed a number of fundamental results.

James Chadwick

Approx. October 20, 1891

James Chadwick was born October 20, 1891 and died July 24, 1974. He was from Manchester, United Kingdom. He won one Nobel Prize. He proved that there was a neutral particle the same mass of a proton in beryllium

Louis De Broglie

Approx. August 15, 1892

Louis De Broglie was born on August 15, 1892 and died March 19, 1987. He was a French physicist. He made groundbreaking contributions to quantum theory. In his 1924 PhD thesis he postulated the wave nature of electrons and suggested that all matter has wave properties. He attended the University of Paris

Werner Heisenberg

Approx. December 5, 1901

Werner Heisenberg was born on December 5, 1901 and died February 1, 1976. Werner Karl Heisenberg was a German theoretical physicist. One of the key pioneers of quantum mechanics. He published his work in 1925 in a breakthrough paper.