摘要
自1889年以来,千克的国际原器作为国际单位制(SI)质量单位的定义。这是SI定义基本单位最后一个人工制造的基准,它的重新定义必将影响着几个其他基本单位。文章介绍了瓦特天平的工作原理以及普朗克常数的实验测定。这些结果对物理学和计量学具有重要的意义。
Since 1889, the international prototype of the kilogram has served as the definition of the unit of mass in the International System of Units （SI）. It is the last man-made standard to be used to define a basic SI unit, and its redefinition will influence several other base units. This paper describes the principle of the watt balance and the experimental determination of Planck＆#39;s constant. These results are of great significance for physics and metrology.
出处
《物理》
CAS
北大核心
2014年第9期606-612,共7页
Physics
关键词
千克国际原器
普朗克常数
瓦特天平实验
物理学和计量学
international prototype of the kilogram
Planck constant
watt balance ex-periment
physics and metrology
