Science Nerds
John Dalton
In 1803 proposed the atomic theory of Matter.
Benjamin Franklin
Concluded there were two kinds of electrical charges which he named (+) and (-)
Ernest Rutherford
From his Gold Foil Experiment, he concluded that the atom is mostly empty space with a tiny positively charged, dense center he called the nucleus.
Albert Einstein
Introduced the idea that electromagnetic radiation has a dual wave-particle nature. He called these particles Photons.
Joseph Priestley
Discovered Oxygen
Michael Faraday
Suggested the structure of the atom is related to electricity.
Henri Becquerel
Discovered Radioactivity
Neils Bohr
Proposed a model of the atom in which electrons travel around the nucleus in orbits.
Antoine Lavoisier
Proposed the Law of Conservation of Mass.
Henry Mosley
Discovered the proton and developed the atomic number as a way of identifying the identity of an element.
Robert Milikan
Measured the charge of the electron using his "oil drop experiment".
Louis de Broglie
Suggested that electrons be considered waves and confined to space around the atomic nucleus and could exist only at specific frequencies.
Joseph Louis Proust
Proposed Law of Definite Proportions.
James Chadwick
Discovered the existence of neutrons
J.J. Thompson
Concluded the atom had negatively charged particles that he named electrons.
Werner Heisenberg
Developed the "uncertainty Principle" that states that it is impossible to determine simultaneously both the position and the velocity of an electron.
Democritus
Proposed that all matter is made up of tiny invisible Particles called Atoms
Erwin Schrodinger
Developed an equation that treated electrons in atoms and waves.
Max Planck
Proposed the relationship (equation) between a quantum of energy and the frequency of radiation. E=hv
Quantum Theory
Describes Mathematically the wave properties of electrons.