In 1912 – Alan Turing was born in London, although his father worked for the Indian Civil Service and his parents lived in India. He helped break the code of the German enigma machine and developed the Turing test for artificial intelligence.

In 1943 – Vint Cerf was born in New Haven, Connecticut. He grew up to become known as one of the fathers of the Internet. most famously for his co-creation of the protocols underlying TCP/IP.

In 1983 – Paul Mockapetris and Jon Postel ran the first successful test of the automated, distributed Domain Name System at the University of Southern California School of Engineering’s Information Sciences.

In 1675 – Britain’s King Charles II established the observatory at Greenwich with the main purpose of determining precise longitudes to aid in navigation. This purpose led to Greenwich being marked as the prime meridian and later Greenwich Mean Time.

In 1799 – The first definitive prototype metre bars (mètre des Archives) and kilograms were constructed in platinum.

In 1999 – The first demonstration of live rats directly controlling a robot arm with their thoughts was published by Nature Neuroscience.