Arachnologist and student of archaeology, Frederic Henry Gravely, collaborated with Ramachandran on the scientific basis for identifying the period of metal images between 1925-1935.
Sharma visited Afghanistan between May and July 1956, in order to explore and investigate the art traditions, epigraphical records, and archaeological remains.
Ramachandran identified images at Brhadiswara temple at Tanjore, as the earliest extant visual representation of Bharata’s karanas.
When the Chola king Rajaraja built the Tanjore temple at the beginning of the 11th century, dance art enjoyed such a high status in society that he had the Karana figures chiseled as sculptures in the first tier of the Vimana.
He has traveled widely all over the world, participated in international seminars, delivered lectures at the invitation of several universities, which have been published as books.