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A study of suggested Formula (ADJ) of Specific Refraction

Author Affiliations

  • 1 Department of Chemistry, the H.N.S.B. Ltd. Science College, Himatnagar-383001, Gujarat, INDIA

Res. J. Physical Sci., Volume 2, Issue (5), Pages 1-7, September,4 (2014)


The measurement of refractive index and optical activity of organic liquids is of great importance in chemistry. These measurements provide invaluable information regarding the molecular structure, purity of organic compounds and the composition of binary mixtures. Early years there are so many formulae found out by the various scientists. Amongst Lorentz and Lorenz formula is very familiar for the calculation of specific refraction of the organic compounds. It is worthwhile to suggest one more empirical formula for the calculation of specific refraction of organic compounds. This formula is known as Andher Desai Joshi (ADJ)s formula. The suggested formula compared with that of Lorentz and Lorenz formula. From the comparison it is remarkable fact that the suggested formula holds good to the extent of 0.02 marginal differences.


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