showed that if electricity is passed through a solution of an electrolyte, chemical reactions occurred at the electrodes in the liberation and deposition of matter at the electrodes.
J. Plucker built one of the first cathode-ray tubes.
Kirchhoff's Theorom
Dmitri Mendeleev created the periodic table
Period: to
Emission of Thermal waves by accelerating Charged Particles
James Clerk Maxwell proposed the theory of electromagnetism and made the connection between light and electromagnetic waves.
G.J. Stoney theorized that electricity was comprised of negative particles he called electrons.
Sir William Crookes’ experiments with cathode-ray tubes led him to confirm the work of earlier scientists by definitively demonstrating that cathode-rays have a negative charge.
E. Goldstein discovered canal rays, which have a positive charge equal to an electron.
Hertz experiment of Photoelectric Effect
Discovery of X-Rays
JJ thomson measured the Charge to mass ration
JJ Thomson atomic Model
Rutherford discovered alpha, beta, and gamma rays in radiation
Max Plank explanation of Black Body Radiation
Einstein explained Photoelectric Effect
Millikan Oil Drop expeiment
Bohr's Model of Atom
Discovery of Proton
De Broglie's Hypothesis
Presence of Electron spin quantum number was proposed