Browsing by Author "Ratnaweera,C N"
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Item Beauty of Physical Chemistry – Part 2 New definitions of SI Units and Physical Chemistry(Institute of Chemistry Ceylon, 2022-06) Ratnaweera,C NIn the previous article we learnt how fixed values of hyperfine transition frequency of Cs, speed of light, Planck constant, and Avogadro constant are used to define SI units of time, length, mass and amount of substances (mole) respectively under the new definitions. In this article we will discuss the remaining three new definitions of SI units.