Physics
- Robert J. Van de Graaff develops the Van de Graaff generator.
- Oskar Klein discovers the Klein paradox.
- Oskar Klein and Y. Nishina derive the Klein-Nishina cross section for high energy photon scattering by electrons.
- Sir Nevill Francis Mott derives the Mott cross section for the Coulomb scattering of relativistic electrons.
- Paul Adrien Maurice Dirac and Werner Karl Heisenberg develop the quantum theory of ferromagnetism.
- Ernest O. Lawrence invents the cyclotron, for which he will receive the 1939 Nobel Prize in Physics.
- Edwin H. Land patents Polaroid polarizing film.
Read more about this topic: 1929 In Science
Famous quotes containing the word physics:
“Mathematics should be mixed not only with physics but with ethics.”
—Henry David Thoreau (1817–1862)
“He who is conversant with the supernal powers will not worship these inferior deities of the wind, waves, tide, and sunshine. But we would not disparage the importance of such calculations as we have described. They are truths in physics because they are true in ethics.”
—Henry David Thoreau (1817–1862)
“Although philosophers generally believe in laws and deny causes, explanatory practice in physics is just the reverse.”
—Nancy Cartwright (b. 1945)