Sri Harirao Navkal did his graduate studies at the Central College, Bangalore, and later took the Master’s degree in Physics with high distinction from the university college of science, Calcutta, after pursuing studies under the guidance of the eminent Indian Physicists, Nobel Laureate Sir C.V.Raman and Prof.Meghnad Saha. Sri Navkal was amongst the first few persons to join the CTRL in 1924 as research scholar. He was appointed as junior research officer in 1925 and as senior physicist in 1929. His designation was changed to senior research officer in 1954. Sri Navkal took charge as officiating director when Dr.Nanjundaiah retired from service in September 1956, and held this post till January, 1957.