Ancient indian scientist work on "Zero" "infinity" . Treaty of Earth is round, Exact calcution of earths periphery, exact time of taken to take one round of sun is great. Develeopment in Caluculous, trignomentry is just worderful. indians are first to extract "Zinc" from its ore. "Ashok Stambh" is great example of our progress in field of mettarargy. Invasion of gravitation , First use of Mircowave of JC bose is proud moment to here and read. Hats off of to indians and their great philosophical brain. it is too short to describe the acheivement of indians but above are few examples. Jai Hind.
