31 Jul 1882 Herbert E. Ives Herbert Eugene Ives - American physicist - Inventor of transmission of mechanical video pictures.
31 Jul 1918 Paul D. Boyer - American biochemist- He together with John E. Walker, received half the 1997 Nobel Prize for Chemistry for the work explaining the enzymatic process involved in the production of the energy-storage molecule adenosine triphosphate (ATP)[How the enzyme ATP synthase catalyses the formation of ATP].
31 July 1923 Stephanie Kwolek - inventor of Kevlar
31 July 1944 Robert C. Merton - Nobel Laureate
1874, the Centennial of Chemistry in the U.S. was celebrated by chemists meeting at Northumberland, Pa
1971, Dave Scott drove a vehicle on the Moon - the battery-powered Lunar Rover (LRV) - as part of the Apollo 15 mission
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