Did you know the metre was originally defined in 1799 as one ten-millionth of the distance from the North Pole to the Equator? Since then, it’s evolved—from a platinum bar standard to today’s definition based on the speed of light in a vacuum. This shift reflects our growing precision in science.
Learn more about the fascinating history and science behind how the metre became a universal unit at this post by RISE Research Institues of Sweden.
