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William Thomson (Lord Kelvin)

1868 : The first scientific measurement of the speed of sound in air was performed by the British scientist William Thomson (Lord Kelvin), leading to significant advancements in acoustics.

1921 : The first radio transmission of a musical program occurred, which marked a pivotal moment in broadcasting and the development of the music industry.

1968 : Space Race: The Soyuz 3 mission achieves the first Soviet space rendezvous.

1974 : The first solar-powered spacecraft, Mariner 10, was launched by NASA. It went on to conduct flybys of Mercury, contributing greatly to our understanding of the planet.

1948 : The first performance of Aaron Copland's ballet "Rodeo" took place, showcasing a blend of classical and American folk music.

1920 : John McCarthy, an influential computer scientist and a key figure in the development of artificial intelligence, was born. He is known for coining the term "artificial intelligence" and for creating the Lisp programming language.

2012 : Microsoft made a public release of Windows 8 and made it available on new PCs.

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