The current definition of the meter, based on the measurement of the wavelength of a line in the 86Kr spectrum, is 104 times less accurate than the definition of time by the cesium "atomic clock."
Iowa Science Teachers Journal
© Copyright 1980 by the Iowa Academy of Science
"The Meter Redefined,"
Iowa Science Teachers Journal: Vol. 17
, Article 16.
Available at: https://scholarworks.uni.edu/istj/vol17/iss3/16