Yesterday, 09:46 AM
"Ancient Indians achieved great progress in alchemy (the older form of chemistry). Alchemical treatises of ancient India refer to various types of 'Yantras' or contraptions for different applications."
https://artsandculture.google.com/story/...y-KQ?hl=en
https://artsandculture.google.com/story/...y-KQ?hl=en

