Monday, 05 May 2014 14:33


Additional Info

  • ID Code: A1-22
  • Purpose: Show an hourglass
  • Description: An hourglass was an early means of time measurement. The picture above shows our elementary version of the hourglass; many historical designs were more sophisticated and thereby able to time such diverse events as boiling an egg or measuring a one hour interval.

    This is primarily useful for introducing the concept of mesaurable time units, not for actually making measurements.

  • Availability: Available
  • Loc codes: A2
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