[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray](https://indike.org/pramana/ins.science.ray-1956) › c40.s1.2 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c40.s1.2 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c40.s1.2 - **Language:** English ### [c40.s1.2](https://indike.org/pramana/ins.science.ray-1956.c40.s1.2) This makes a \*truti\* of time equal to 1/33,750 of a second, which is nearly the measure of the \*paramanu\* of time, as given in Vishnupurana (\*vide\* Bhaskara's Siddhanta-Siromani circa 1150 A.D.). - [Previous: c40.s1.1](https://indike.org/pramana/ins.science.ray-1956.c40.s1.1) - [Next: c40.s1.3](https://indike.org/pramana/ins.science.ray-1956.c40.s1.3) - [Up: c40.s1](https://indike.org/pramana/ins.science.ray-1956.c40.s1) ## Cites (2) - [Viṣṇupurāṇa](https://indike.org/pramana/in.purana.visnu) — Vyāsa, Sanskrit - [Siddhāntaśiromaṇi](https://indike.org/pramana/in.astro.siddhanta.early.siddhantasiromani) — Bhāskara II, Sanskrit --- Source: [https://indike.org/pramana/ins.science.ray-1956.c40.s1.2](https://indike.org/pramana/ins.science.ray-1956.c40.s1.2) · Pramāṇa