[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D.](https://indike.org/pramana/ins.science.ray-1902) › v2.c32.s16.9 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s16.9 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s16.9 - **Language:** English ### [v2.c32.s16.9](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.9) 1. RELATIVE WEIGHT. We have purposely used these terms as contradistinguished from "specific gravity": as the latter connotes peculiar associations. The principle of Archemedes being evidently unknown among the Hindus, the measurement of volume could only be roughly approximate. To cite some illustrations. A stone may be of the same species as, and equal in volume to, a padmarāga (oriental ruby), but will differ in weight from the latter.\* - [Previous: v2.c32.s16.8](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.8) - [Next: v2.c32.s16.10](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.10) - [Up: v2.c32.s16](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16) --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.9](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.9) · Pramāṇa