U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

An introduction to the new SI

Published

Author(s)

Peter J. Mohr, Sandra Knotts, William D. Phillips

Abstract

Plans are underway to redefine the International System of Units (SI) around 2018. The new SI specifies the values of certain physical constants to define units. This article explains the new SI in a way that could be used to present it to high-school physics classes.
Citation
The Physics Teacher
Pub Type
Journals

Download Paper

DOI Link

Keywords

SI, defining constants, SI redefinition, new SI

Citation

Mohr, P. , Knotts, S. and Phillips, W. (2016), An introduction to the new SI, The Physics Teacher, [online], https://doi.org/10.1119/1.4972491 (Accessed May 1, 2024)

Created December 20, 2016, Updated October 9, 2019