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:
“The fundamental laws of physics do not describe true facts about reality. Rendered as descriptions of facts, they are false; amended to be true, they lose their explanatory force.”
—Nancy Cartwright (b. 1945)
“But this invites the occult mind,
Cancels our physics with a sneer,
And spatters all we knew of denouement
Across the expedient and wicked stones.”
—Karl Shapiro (b. 1913)
“Although philosophers generally believe in laws and deny causes, explanatory practice in physics is just the reverse.”
—Nancy Cartwright (b. 1945)