unified scale การใช้

• Scaliger invented the concept of the Julian Day which is still used as the standard unified scale of time for both historians and astronomers.
• The RIAU may have simply been referred to as a continuation of the Black Guards if it were not on a far larger and more organized and unified scale.
• The unified scale based on carbon-12, 12 C, met the physicists'need to base the scale on a pure isotope, while being numerically close to the chemists'scale.