[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.s16.13 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s16.13 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s16.13 - **Language:** English ### [v2.c32.s16.13](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.13) In the case of precious metals, however, adulteration was detected by an ingenious device, which may be regarded as a near approach to the principle of Archemedes. Suppose it is intended to test the purity of a specimen of gold. All that one has to do is to draw a wire of this gold and another of the standard gold through the self-same orifice \[of corundum\]. As these wires are of equal - [Previous: v2.c32.s16.12](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.12) - [Next: v2.c32.s16.14](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.14) - [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.s16.13](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.13) · Pramāṇa