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This principle putforth by Maharshi Kanad seems far ahead of its times in comparison to the present principles of molecule or nucleus. But it is interesting to note that the idea of tanmatra which is viewd as a kind of potential out of which materiality emerges in the cosmology of Samkhya prevalent in those times has features similar to that of Anu in the Vaisheshika Darshana.<ref name=":5" /><ref name=":0" />

This principle putforth by Maharshi Kanad seems far ahead of its times in comparison to the present principles of molecule or nucleus. But it is interesting to note that the idea of tanmatra which is viewd as a kind of potential out of which materiality emerges in the cosmology of Samkhya prevalent in those times has features similar to that of Anu in the Vaisheshika Darshana.<ref name=":5" /><ref name=":0" />

=== Nagarjun ===

=== नागार्जुनः ॥ Nagarjun ===

He was a famous metal scientist of 10-11 century. He was born in Dahak, Gujrat. He worked in the field of melting metals and making new metals. He also tried to transform metals into gold. Although he was not successful but he was able to make metal having golden luster. He also wrote a book called Rasratnakar. He wrote about the purification of metals like gold, silver, tin, copper in his book.

Nagarjuna was an alchemist and metallurgist of the 8th century CE<ref name=":3" /> born at Fort Daihak near the famous shrine of Somnath in Gujarat. He worked in the field of melting metals and making new metals. His efforts were concentrated on transforming base metals into gold. Although he couldn't succeed in transmuting base metals into gold, his techniques yeilded metals with gold-like lustre.<ref name=":0" /> Till date, this technology is used in making imitation jewellry.

 

His work known as Rasaratnakara contains descriptions of alchemical processes and preparations of mercurial compounds. He also wrote about the methods for extraction of metals like gold, silver, tin and copper from their ores and their purification.<ref name=":0" /> His book, Rasaratnakara, is indeed a survey of metallurgy and alchemy as it existed in ancient Bharata.<ref name=":3" />

=== Varah Mihir ===

=== Varah Mihir ===