The gates of the Temple of Jerusalem used Corinthian bronze made by depletion gilding. It was most prevalent in Alexandria, where alchemy is thought to have begun. In ancient India, copper was used in the holistic medical science Ayurveda for surgical instruments and other medical equipment. Ancient Egyptians (~2400 BC) used copper for sterilizing wounds and drinking water, and later on for headaches, burns, and itching. The Baghdad Battery, with copper cylinders soldered to lead, dates back to 248 BC to AD 226 and resembles a galvanic cell, leading people to believe this was the first battery; the claim has not been verified. COUNT 5
QSN1 What material were the gates of the Temple of Jerusalem made from? ANS1 Corinthian bronze QSN2 How is Corinthian bronze made? ANS2 depletion gilding QSN3 Where do archeologists believe that alchemy was first practiced?  ANS3 Alexandria QSN4 What metal was used to make surgical equipment in ancient India? ANS4 copper QSN5 What is the name of the battery that was developed using copper in 248 BC? ANS5 Baghdad Battery