In 1900 – German physicist Max Planck published his theory that radiant energy is made up of particle-like components, known as “quantum.” And quantum physics was born.

In 1972 – Eugene Cernan ended a 7 hour and 15 minute EVA, climbed back aboard the Apollo 17 Lunar Module and became the last person to walk on the moon.

In 1996 – John Tu and David Sun, the founders of Kingston Technology took $100 million from the sale of their privately held enterprise and gave it to employees, a spontaneous gesture to those who had helped make the memory-module company a market leader.

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In 1962 – NASA “Relay 1” launched, the first active repeater communications satellite in orbit.

In 1977 – Young Bill Gates was arrested for traffic violation in Albuquerque, New Mexico, leading to one of the most famous mugshots ever.

In 1977 – Robert Metcalfe et. al were awarded a patent for “Multipoint data communication system with collision detection” also known as ethernet.

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In 1896 – Guglielmo Marconi amazed a group at Toynbee Hall in East London with a demonstration of wireless communication across a room. Every time Marconi hit a key a bell would ring from a box across the room being carried by William Henry Preece.

In 1973 – Founder of LinkExchange, CEO of Zappos, and promoter of customer-centric business, Tony Hsieh was born.

In 1980 – Apple’s stock was initially offered for sale. Regulators in Massachusetts prohibited individual investors in the state from buying the stock, as it was deemed too risky.

In 1991 – Paul Kunz set up the first website in North America. It searched particle physics literature at Stanford.

Like Tech History? Purchase Tom Merritt’s Chronology of Tech History at Merritt’s Books site.