Tag Archives: Prime Meridian

(16)75

In 1675, Charles II of England founded the Royal Observatory Greenwich in order to improve global naval navigation (10+7).  Many disasters had occurred at sea because sailors did not know the precise longitude (East/West direction) of where they were when out of sight of land.  “In 1714, Parliament established a panel of experts, the Board [...]

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81 (degrees)

To see 81 degrees from different powers of 10: 1) Temperature  (10+2) 81 degrees Fahrenheit = 27.2 degrees Celsius 2) Global location (10+7) 81 degrees longitude (vertical line) = 81 degrees west of the Prime Meridian (Greenwich, England) 3) Weather (10+4) The dewpoint is always the same as the temperature or lower. During a heat [...]

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  • Countdown to Powers of Ten Day

    • 10/10/10 1530 days ago