51
85 years ago #Today, Alan Turing first described to the world the Universal Machine, later to be known as the Turing Machine, creating the basic theory of computability for several decades to come [read more: ubm.io/2ABJm0l] [source of the gif: buff.ly/3qxfVtG]
52
"The End of the War" is a graphic record of when the guns fell silent at the end of WWI recorded by sound ranging equipment near the front, 104 years ago #Today
[read more: ow.ly/zIJu30mx94L]
53
Born #Today in 1790, Robert Stirling was minister and inventor of the Stirling Cycle engine.
This is a 1903 phonograph working with a Stirling hot air engine
[read more: buff.ly/3srbRL5]
[📹 Oliver Mallia]
54
#Today in 1983, Microsoft Word was first released
[read more: buff.ly/3F94vnf]
55
Born #Today in 1910, William Higinbotham was the physicist who invented the first video game, Tennis for Two in 1958, using a small analogue computer with ten operational amplifiers and output a side view of the flight of the tennis ball on an oscilloscope buff.ly/3BgnBSG
56
This is an excerpt from the original US Patent number 3005282 A, issued 61 years ago #Today, proposing a design for a "Toy building brick", from a company named LEGO. That brick became much more than a simple toy buff.ly/2W9C0gy
57
#Today in 1843, the theory of quaternions was born when a sudden thought came to William Rowan Hamilton as he was walking with his wife along the Royal Canal in Dublin, Ireland. It was the fundamental formula:
i² = j² = k² = ikj = -1
[read more: buff.ly/3pndnxN]
58
75 years ago #Today, Chuck Yeager became the first person to break the sound barrier flying the Bell X-1 rocket plane bit.ly/2d3rRgE
59
This is the oldest surviving aerial photograph, taken 43 years before the invention of the airplane, 162 years ago #Today bit.ly/1EaL7fl
60
43 years ago #Today, Douglas Adams' The Hitchhikers Guide to the Galaxy was first published bit.ly/1TEAbkH
61
30 years ago #Today, the "Peekskill meteorite" hit an unoccupied 1980 Chevy Malibu near New York bit.ly/2kBBaKj
62
89 years ago #Today, the #Draconids put on one of the greatest astronomical shows ever, the famous radiant storm of 9 October bit.ly/2egCoaa
63
65 years ago #Today the first artificial Earth satellite was launched #Sputnik1
[source, read more: bit.ly/1QLIkQw]
64
«When I woke up just after dawn on September 28, 1928, I certainly didn’t plan to revolutionize all medicine by discovering the world’s first antibiotic. But I guess that was exactly what I did»
#Today in 1928, Alexander Fleming discovered penicillin
buff.ly/3m6l5c9
65
#Today in 1983, Stanislav Petrov, an officer of the Soviet Air Defence Forces, correctly identified as a false alarm an early warning about an American multiple ICBM attack, possibly avoiding an escalation to a full-scale nuclear war [read more: bit.ly/2B7vhHJ]
66
#Today, Jupiter will come the closest to Earth it's been in 59 years. The last time Earth was this close to the giant – just 590 million kilometers away – it was October 1963. This will make observations particularly favorable.
[read more: buff.ly/3Ssnvk8]
67
When does the line between day and night become vertical? #Today, September 23 at 01.03 UTC, there was an equinox on planet Earth
[read more: bit.ly/3xPFGYT]
[watching solstices and equinoxes from space: buff.ly/1Qe1hk7]
68
Born 231 years ago #Today, Michael Faraday was the discoverer of the principles underlying electromagnetic induction, diamagnetism and electrolysis. Although Faraday received little formal education, he was one of the most influential scientists in history buff.ly/2QSoFq3
69
10 years ago #Today, the Space Shuttle Endeavour had its last flight. Here's a photo captured over Los Angeles, few minutes its landing at LAX buff.ly/2FOzM2j
70
Born 203 years ago #Today, Léon Foucault was a physicist and he's best known for proving the Earth's rotation with his pendulum, making the discovery at 2 am in the cellar he shared with his mother buff.ly/2MEJlUM
71
Born 196 years ago #Today, Bernhard Riemann was a revolutionary contributor to mathematics. Through his pioneering contributions to differential geometry, he also laid the foundations of the mathematics of general relativity bit.ly/2cHSzs5
72
This is the first cellular phone: it was approved by U.S. FCC 37 years ago #Today and it cost $4,000 [read more: bit.ly/1PgPv5m]
73
46 years ago #Today, this iconic photo was shot at the first Shuttle showing: its name was #Enterprise [read more: bit.ly/2d8WnH5] #StarTrek
74
5 years ago #Today, @CassiniSaturn reached the end of its pluriennial mission in space. A mission meant to last 3 years in orbit around Saturn, and instead the spacecraft spent 13 years, 76 days there, closing with a Grand Finale [360° coverage: buff.ly/2xe4XwK]
75
21 years ago #Today, astronaut Frank Culbertson was on the International Space Station during Expedition 3 and witnessed the September 11th attacks from space [read more: buff.ly/3hleJE4] #September11
