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Title: International System of Units (SI); Watt Balance
Description: In support of a proposal to revise the International System of Units (SI) so that it would be based on constants of nature, NIST efforts such as the watt balance experiment (pictured) offer new ways of determining an accurate value of the Planck constant h, thereby contributing to a definition of the kilogram based on physical constants.

*PML
Subjects (names):
Topics/Categories:
Type: Photo/Color
Source: National Institute of Standards and Technology
Credit Line as it should
appear in print:
Credit Steiner, NIST
AV Number: 10PML004
Date Created: 2010
Date Entered: 10/26/2010

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