The invention of an accurate and precise timepiece greatly enhanced 18th century navigation by allowing sailors to accurately determine their longitude. The marine chronometer allowed them to determine the difference between their local time and GMT, and they could derive longitude from that. en.wikipedia.org/wiki/Mar…
Today I learned about the The Noon Gun which has been a historic time signal in Cape Town, South Africa since 1806. The guns fire at noon everyday except holidays and on Sunday. The guns original purpose was for ships in harbor to calibrate their marine chronometers. en.wikipedia.org/wiki/Noo…
The Bremont MBI chronometer is a watch that is available only to pilots who have survived an ejection in a Martin-Baker ejection seat. bremont.com/watch/mbi/178…
Today I learned of John Harrison, a self-educated carpenter turn clock-maker. He invented the first successful marine chronometer, which helped solve the problem of calculating longitude at sea. inverse.com/article/13090…
Ball drops were used to mark the hour so that sailors could see this at a distance and set the ship's chronometers. nytimes.com/learning/teac…
John Harrison, an 18th Century English carpenter and self-taught clock marker, developed the marine chronometer which allowed the Royal Navy to keep accurate time, determine their current longitude, and navigate the oceans safely. en.wikipedia.org/wiki/Joh…
The 31 years of consistent hard work and experimentation of an 18th century Yorkshire carpenter led to the creation of the first true chronometer. This allowed England to become and empire and the biggest power in the world for 200 years! en.wikipedia.org/wiki/Mar…
The ultimate chronometer is accurate to the nanosecond nasa.gov/mission_pages/td…
The New Year's Eve ball drop in New York City originates from a tradition started in Greenwich in 1833. A "Time-Ball" atop the England's Royal Observatory would drop at one o'clock every afternoon, allowing the captains of passing ships to precisely set their chronometers. pages.citebite.com/h3e0q3…

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