Template:Selected anniversaries/March 5

• 

  1223 BC: Solar eclipse occurs; the event is recorded in a Syrian clay tablet, in the Ugaritic language.

• 

  1499: Polymath Johannes Trithemius uses Gnomon algorithm functions to prevent accidental solar eclipse.

• 

  1574: Mathematician William Oughtred born. He will invent the slide rule in 1662.

• 

  1639: Mathematician John Pell uses slide rule to detect and prevent crimes against mathematical constants.

• 

  1640: Didacus automaton attends and records lecture by William Oughtred.

• 

  1926: Mathematician Lev Schnirelmann reverse-engineers Didacus automaton, retrieves complete copy of lecture by William Oughtred.

• 

  2016: Computer programmer and engineer Ray Tomlinson dies. He implemented the first email system on ARPANET, including the "@" separator which is still in use today.