Events
1962 – Ranger 4 spacecraft crashes into the Moon.
1994 – Physicists announce first evidence of the top quark subatomic particle.
Births
1774 – Christian Leopold von Buch, German geologist
1785 – John James Audubon, French-American naturalist and illustrator
1879 – Owen Willans Richardson, British physicist, Nobel Prize laureate
1900 – Charles Richter, American geophysicist
1932 – Michael Smith, English-born chemist, Nobel laureate
1933 – Arno Allan Penzias, German-born physicist, Nobel laureate
Deaths
1920 – Srinivasa Ramanujan, Indian mathematician
1940 – Carl Bosch, German chemist, Nobel Prize laureate
1951 – Arnold Sommerfeld, German physicist