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View Diary: Measurement as a Way to Understand the World (121 comments)

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  •  Dual measures is hard (5+ / 0-)

    And we can't go backwards to when we did not have to know what the rest of the world is doing.

    •  Math Class is tough. (2+ / 0-)
      Recommended by:
      RiveroftheWest, TrueBlueMajority

      Party dresses are fun!

    •  Dual measures aren't hard (0+ / 0-)

      You can for example start with a foot of 300 mm and divide that into hands of 100 mm or palms of 75 mm. Either three hands equals a foot, five hands equals an ordinary cubit and six hands a sacred cubit, or four palms equals a foot, five palms equals an ordinary cubit and seven palms equals a royal cubit. Two ordinary cubits equal one meter, two feet equal one ell or a sacred cubit.

      The body measures can be dual with agricultural measures, three feet equal a yard, five feet equal a pace six feet equal a fathom and also with standards of measure that relate time to distance such as a days march or a days sail.

      Anciently all of these measures were used as unit fractions
      and related to degrees so that a Greek stadion or a Roman stadium of 185 m could be combined to make a mia chilios, miliare or mile of 8 stadia or 1000 paces with 75 miles to a degree.

      Live Free or Die --- Investigate, Incarcerate

      by rktect on Wed May 29, 2013 at 03:18:00 PM PDT

      [ Parent ]

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