The World Today - Comment


Question 401: How was the length of a meter originally defined?
Author: K. - Category: History of Science
Difficulty: 3/5 - Zone: Europe (Minus Russia)

  • As 0.5 French Royal Yards
  • As the distance sound travels in 1/100th of a second
  • As the length of a specially made rod of arbitrary length
  • As one ten-millioneth of the distance between the pole and the equator

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