A brief history of measuring nature will be presented, with emphasis on the formation of the metric system and the International System of Units (SI). Then there will be a description of the new SI framework which will no longer be based on definitions of units such as the meter, kilogram, and second. Instead it will adopt exact values for seven fundamental constants of nature upon which all SI units will be realized. Gone are the base units and their definitions.
Fundamental Constants Data Center
National Institute of Standards and Technology
He is a member of the American Physical Society and chair of the CODATA Task Group on Fundamental constants.
Abstract and author bio