Articles Index

De Broglie Hypothesis
We discuss the De Broglie hypothesis, which proposes that all matter exhibits wave-like properties and relates the observed wavelength of matter to its momentum.

Blackbody Radiation
Research in blackbody radiation created a major dilemma for classical physics. The problem was resolved by Max Planck in 1900 by introducing the concepts which laid the foundation for all of quantum mechanics.

The Photoelectric Effect
A description of the photoelectric effect and its significance, which includes crushing the classical wave theory of light, Einstein's first publication, Einstein's only Nobel Prize, and one of the major steps in developing quantum mechanics.

The Compton Effect
The Compton effect, where the energy of a photon decreased upon interaction with matter, is another experiment that demonstrated the particle properties of electromagnetic radiation.