The Apollo guidance computer that landed astronauts on the Moon ran on 64 kilobytes of memory, and its programs were literally woven by hand — women at Raytheon threaded copper wire through tiny magnetic cores, one bit at a time

The GPS satellites orbiting 20,200 kilometres overhead run their clocks about 38 microseconds faster per day than clocks on the ground — without Einstein's relativity correcting for it, GPS would drift by roughly 10 kilometres every 24 hours

The GPS satellites orbiting 20,200 kilometres overhead run their clocks about 38 microseconds faster per day than clocks on the ground — without Einstein’s relativity correcting for it, GPS would drift by roughly 10 kilometres every 24 hours

In September 1947, engineers at Harvard pulled a moth from a relay inside the Mark II computer, taped it into the logbook, and wrote 'first actual case of bug being found' — the pest was literal

In September 1947, engineers at Harvard pulled a moth from a relay inside the Mark II computer, taped it into the logbook, and wrote ‘first actual case of bug being found’ — the pest was literal

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