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Time Measuring Clocks Grow More Costly and Precise
The article notes rising costs in time measurement driven by space programs and astronomy as clocks advance from hour glasses to ammonia and cesium standards. It cites Dr. R. D. Huntoon discussing definitions of the second and the huge price jumps to achieve microsecond accuracy, with cesium clocks accurate for 30,000 years and international use since 1964.
MENTIONED IN THIS ARTICLE
Huntoan
Washington
UPI
Benjamin Franklin
R. D. Huntoon
Huntoon
Institute For Basic Standards
Commerce Departments
National Bureau of Standards