Did you know that the Ancient Indian Acharyas applied Nanotechnology too!
Concept of reduction in particle size of metals is explained as well as practiced from the time of Charaka. The methods are explained in Charaka Samhita (1500 BC)
The different Bhasmas prepared in Ayurveda are actually utilizing the applications of nanosized metals like iron, calcium, zinc, gold etc. Bhasmas are biologically produced nanoparticles.
Nanoparticles are produced industrially now in big amounts for various purposes including medicine. But the ancient technology which provided an economical way of creating nanosized particles used for curing various ailments are really commendable.