1900s (decade) - Science

Science

  • Planck's law of black body radiation
  • Einstein's theory of special relativity
  • Einstein explains Brownian motion and the photoelectric effect
  • Seismographs built in the University of California, Berkeley, in 1900
  • Practical air conditioner designed by Willis Carrier in 1902
  • Geiger Counter (measures radioactivity) invented by Hans Geiger in 1908
  • Radioactivity discovered by Marie Curie
  • Third Law of Thermodynamics by Walther Nernst
  • Quantum Hypothesis by Max Planck in 1900

  • The Bacillus Calmette-GuĂ©rin (BCG) immunization for tuberculosis is first developed.

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