The NIST Reference on Constants, Units, and Uncertainty

This database gives values of the basic constants and conversion factors of physics and chemistry resulting from the 2002 least-squares adjustment of the fundamental physical constants as published by the CODATA Task Group on Fundamental Constants and recommended for international use by CODATA.

本数据库提供了基于2002年CODATA基本常数工作组对基本物理常数进行的最小二乘调整得出的物理和化学基本常数值及其转换系数，该调整结果由CODATA任务组发布，并被CODATA推荐用于国际间应用。