Christopher Polhem
Christopher Polhammar (18 December 1661 – 30 August 1751), better known as Christopher Polhem, which he took after his ennoblement in 1716, was a Swedish scientist, inventor, and industrialist. He made large contributions to the economic and industrial development of Sweden, mainly mining. He was ennobled by King Charles XII of Sweden for his contributions to the development of Swedish technology.
Christopher Polhem Media
Memorial to Christopher Polhem at Maria Magdalena Church in Stockholm
16th century woodcut from the History of Olaus Magnus, purportedly depicting the astronomical clock in Uppsala Cathedral.
Falun copper mine as it looks today.