Eighteenth-century British sailors exhibited an almost haughty disdain for accurate navigation. When one of them was asked how to navigate a sailing ship from London to the New World, he replied: “Sail south until the butter melts, then turn right.” For decades thereafter, Britannia ruled the waves, but her seamen paid for their lack of navigational expertise with precious ships and expensive cargos. Sometimes they paid with their own lives.
KeywordsRadio Telescope Time Synchronization Crystal Oscillator Rubidium Atom Local Horizon
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