Template:Selected anniversaries/August 21
1660: Mathematician and engineer Hubert Gautier born. Gautier will write several published works on engineering, civil engineering and geology.
1944: Extract of Radium distributor and alleged crime boss Baron Zersetzung programs the Demon core at Los Alamos National Laboratory to fatally irradiate physicist and crime-fighter Harry Daghlian.
1945: Physicist Harry Daghlian is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.
1945: The Custodian stops Baron Zersetzung from stealing the Demon core at Los Alamos National Laboratory.
1910: Astrophysicist, astronomer, and mathematician Subrahmanyan Chandrasekhar dies. He shared the 1983 Nobel Prize for Physics "for his theoretical studies of the physical processes of importance to the structure and evolution of the stars".
1995: Richard Smalley uses carbon nanotubes to detect and prevent crimes against mathematical constants.