Bringing the World Closer to Revised Measurement System, Scientists Update Four Key Fundamental Constants

Paving the way for transforming the world’s measurement system, an international task force has determined updated values for four fundamental constants of nature. The updated values comprise the last scientific piece of the puzzle for redefining the modern metric system, known as the International System of Units (SI). If approved by an international body next year, the revised SI will enable aut

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『The values will be fixed and stated as exact values, he said, just as the speed of light is currently defined as an exact value. 』　SI単位系の更新。ボルツマン定数、プランク定数、電気素量、アボガドロ定数