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    • Low tides reveal rare strip of Hawaii sand

      Low tides reveal rare strip of Hawaii sand

      San Francisco Chronicle· 5 days ago

      Every year, people may be able to wade out onto the sandbar, but its visibility and shallowness depend on the swells, tides and sand. “I have seen the...

    • Lord Kelvin and His Analog Computer

      Lord Kelvin and His Analog Computer

      IEEE Spectrum· 3 days ago

      In 1870, William Thomson, mourning the death of his wife and flush with cash from various patents related to the laying of the first transatlantic...