NIST Museum / National Institute of Standards and Technology / /
IndustryTerm
unperturbed atomic energy level transition 2p10 5d5 / /
Organization
National Institute of Standards and Technology / U.S. Congress / Precision Engineering Division of the Manufacturing Engineering Lab / French National Assembly / International Bureau of Weights and Measures / Paris Academy of Sciences / International Commission of the Meter / /
Time Line for the Definition of the Meter