[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) › c16.19 # Hindu Achievements in Exact Science: A Study in the History of Scientific Development c16.19 Hindu Achievements in Exact Science: A Study in the History of Scientific Development c16.19 - **Language:** English ### [c16.19](https://indike.org/pramana/ins.science.sarkar-1918.c16.19) 10. The Hindus had no knowledge of mineral acids for a long period. But this defect was made up by their use of \*Vid\*, which, says Ray, could "kill all metals." This was a mixture containing \*aqua regia\* and other mineral acids \*in potentia\*. The substance had probably been discovered by Patanjali.⁵⁹ Mineral acids were discovered almost simultaneously both in India and Europe during the sixteenth century. - [Previous: c16.18](https://indike.org/pramana/ins.science.sarkar-1918.c16.18) - [Next: c16.20](https://indike.org/pramana/ins.science.sarkar-1918.c16.20) - [Up: c16](https://indike.org/pramana/ins.science.sarkar-1918.c16) --- Source: [https://indike.org/pramana/ins.science.sarkar-1918.c16.19](https://indike.org/pramana/ins.science.sarkar-1918.c16.19) · Pramāṇa