stackyFACTSKnowing how far east or west you traveled used to be a deadly guessing game until someone realized time is distance.
Knowing how far east or west you traveled used to be a deadly guessing game until someone realized time is distance. While latitude was easily calculated by looking at the sun or stars, longitude required knowing the exact time at your starting point compared to your current local time. John Harrison eventually solved this by inventing a marine chronometer, proving that the greatest navigational tool in human history was just an incredibly stubborn pocket watch.
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