28 Febuary

  • 1928 Chandrasekhara Venkata Raman discovers the inelastic scattering of photons, which would become known as the Raman Effect
  • 1997 A flash of gamma rays strikes the Earth for 80 seconds and was followed by an afterglow in a galaxy 8.1bn lightyears away, providing the first evidence that gamma-ray bursts occur far outside our own galaxy
  • 2007 The New Horizons space probe flies past Jupiter on its way to Pluto
  • 1930 Birth of Leon Neil Cooper, who developed a theory explaining superconductivity along with John Bardeen and John Robert Schrieffer, for which the trio were awarded the Nobel Prize in 1972
  • 1939 Birth of Daniel C Tsui, the solid-state physicist awarded the 1998 Nobel Prize for discoveries relating to the quantum Hall effect
  • 1948 Birth of Steven Chu, the 12th US Secretary of Energy and winner of the 1997 Nobel Prize for cooling and trapping atoms with laser light
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