Metric unit of Time should be introduced
Kilogram and three base units changed making all measures in base-units
It refers to National Physical Laboratory of India introducing from 20.05.2019 (World Metrology Day) the redefined International System of Units (SI units) for four base-units including Kilogram (Weight), Ampere (Electric Current), Kelvin (Temperature) and Mole (atoms) which will now onwards be based on constant of nature (quantum standards) rather than earlier being based on physical artefacts as per decision taken at General Conference of Weights and Measures at Versailles (France) in November 2018 meaning thereby that now onwards values of these units will never change. It is noteworthy that other three base units Second (Time), Metre (Length) and Candela (Luminous Intensity) are already based on constants of nat...