[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Hindu Achievements in Exact Science: A Study in the History of Scientific Development](https://indike.org/pramana/ins.science.sarkar-1918) › c15.22 # Hindu Achievements in Exact Science: A Study in the History of Scientific Development c15.22 Hindu Achievements in Exact Science: A Study in the History of Scientific Development c15.22 - **Language:** English ### [c15.22](https://indike.org/pramana/ins.science.sarkar-1918.c15.22) (7) The Hindus knew that the octave above a note has twice as many vibrations as the note itself. They had thus arrived at the octave on which modern Eur-American music is based. - [Previous: c15.21](https://indike.org/pramana/ins.science.sarkar-1918.c15.21) - [Next: c15.23](https://indike.org/pramana/ins.science.sarkar-1918.c15.23) - [Up: c15](https://indike.org/pramana/ins.science.sarkar-1918.c15) --- Source: [https://indike.org/pramana/ins.science.sarkar-1918.c15.22](https://indike.org/pramana/ins.science.sarkar-1918.c15.22) · Pramāṇa