- Author
- Astin, A. V.
- Title
- Standards of Measurement.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- Scientific American, Vol. 218, No. 6, 50-62, June 1968
- Keywords
- standards | measurement
- Abstract
- The goal is to define standards of length, mass, time and temperature that are both precise and reproducible. Of the four only mass still lacks a referent in nature.