Discovery of the Electron, Models, and Theories.Andrew, Anthony, Cody
JJ Thompson• Born 1856, England; Died 1940 (age 83)
• Won Nobel Prize (1906)
• Made great inquirers about the atom’s smaller particles
• Concluded atoms were divisible based on his work
JJ Thomson Experiments dealt with cathode rays
Biggest parts in discovering the electron
Link to more on his experiment Thomson's Experiment
Thomson’s Model
Robert Millikan Born 1868, Illinois; Died 1953 (age 85)
Won Nobel Prize (1923)
Discovered charge of electron
Oil-drop experiment
Robert Millikan Weight-to-charge ratio
Niels Bohr Born in 1885, Denmark; Died 1962 (age
77)
Won Nobel Prize(1922)
Did work on quantum theory
Made model of atom
Niels Bohr Used different theories & structures to
create atomic model
Model had electrons orbiting around nucleus
Niels Bohr
Louis de Broglie Born 1892, in France; Died 1987 (age
94)
Won Nobel Prize (1929)
Wave nature of electrons
All matter has wave properties
Werner Heisenberg Born 1901, Germany; Died 1976 (age
74)
Won Nobel Prize (1932)
Creator of quantum mechanics
Published paper on model of nucleus
Werner Heisenberg
Erwin Schrodinger Born 1887 in Austria; Died 1961 (age
73)
Won Nobel Prize (1933)
Worked on quantum theory
Looked at electron orbit
Erwin Schrodinger Important work on wave mechanics
Made quantum Model
Bohr’s Model Hydrogen only
Electrons orbit around nucleus
Disproved by quantum mechanical
Bohr’s Model
Quantum Mechanical Model Made by Schrodinger
Depicts electron movement
Works with all elements
Quantum Mechanical Model
Oil Drop Experiment http://ffden-2.phys.uaf.edu/212_fall2003.
web.dir/Ryan_McAllister/Slide3.htm
Timeline
Correct Theories/Models Bohr’s model
Broglie’s thesis
Schrodinger’s model
Planck’s quantum theory
Heisenberg’s model
Incorrect Theories/Models Thomson’s model
Bohr’s Model
