what is the objective of this academy mentioned here?
To encourage and protect the spirit of French scientific research.
French Academy of Sciences
The French Academy of Sciences (French: "Académie des sciences") is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research. It was at the forefront of scientific developments in Europe in the 17th and 18th centuries, and is one of the earliest Academies of Sciences.
having all units in atomic standards is more useful. explain UNANSWERABLE is there a body or organization that controls it? Yes - General Conference on Weights and Measures (CGPM) when was this established? 20 May 1875 which are the states that are members of this conference? Argentina,  Australia, Austria to name a few.. who hosts or conducts this conference? General Conference on Weights and Measures (CGPM), CGPM meetings are chaired by the Président de l'Académie des Sciences de Paris.
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French Academy of Sciences [SEP] Introduction
The French Academy of Sciences (French: "Académie des sciences") is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research. It was at the forefront of scientific developments in Europe in the 17th and 18th centuries, and is one of the earliest Academies of Sciences. Currently headed by Sébastien Candel (President of the Academy), it is one of the five Academies of the Institut de France.