- 1986 An accident occurs at the Chernobyl nuclear power plant in the USSR, present-day Ukraine, becoming the worst nuclear accident in history
- 1994 The first experimental evidence of the existence of the top quark is announced
- 1879 Birth of Owen Willans Richardson, who was awarded the 1928 Nobel Prize for his work on thermionic emission
- 1933 Birth of Arno Allan Penzias, co-discoverer of the cosmic microwave background radiation along with Robert Woodrow Wilson - the pair shared half of the 1978 Nobel Prize with the other half being awarded to Pyotr Leonidovich for unrelated work
Advanced Digital Imaging Laboratory Using MATLAB®
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