Template:Selected anniversaries/May 4
1677: Mathematician and theologian Isaac Barrow dies. He played an early role in the development of infinitesimal calculus.
1733: Mathematician, physicist, and sailor Jean-Charles de Borda born. He will contribute to the development of the metric system, constructing a platinum standard meter, the basis of metric distance measurement.
1825: Biologist Thomas Henry Huxley born. He will be known as "Darwin's Bulldog" for his advocacy of Charles Darwin's theory of evolution.
1860: USS Cairo retrofitted with military Gnomon algorithm functions for use in fighting crimes against mathematical constants.
1921: Physicist Harry Daghlian born. He will be fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.
1943: Alice Beta Paragliding published. Many experts believe that the illustration depicts Beta infiltrating the ENIAC program, although this is widely debated.