The meter was defined originally as
A) one ten-millionth of the diameter of Earth.
B) one ten-millionth of the distance from the equator to the North Pole.
C) the wavelength of a line in the spectrum of krypton-86.
D) the length of a platinum-iridium bar.

Question

Quizplus · Accepted Answer

The meter was originally defined in 1791 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris. This definition was intended to provide a universal standard of measurement based on the Earth's dimensions.

The Meter Was Defined Originally as