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 significant contributions to the economic and industrial development of Sweden, particularly mining. He was ennobled by King Charles XII of Sweden for his contributions to Swedish technological development.
KTH Royal Institute of Technology (Swedish: Kungliga Tekniska högskolan, lit. 'Royal Technical High School'), abbreviated KTH, is a public research university in Stockholm, Sweden. KTH conducts research and education in engineering and technology and is Sweden's largest technical university. Since 2018, KTH consists of five schools with four campuses in and around Stockholm.
KTH was established in 1827 as the Teknologiska institutet (Institute of Technology) and had its roots in the Mekaniska skolan (School of Mechanics) that was established in 1798 in Stockholm. But the origin of KTH dates back to the predecessor of the Mekaniska skolan, the Laboratorium mechanicum, which was established in 1697 by the Swedish scientist and innovator Christopher Polhem. The Laboratorium mechanicum combined education technology, a laboratory, and an exhibition space for innovations. In 1877, KTH received its current name, Kungliga Tekniska högskolan (KTH Royal Institute of Technology). The Swedish king, His Majesty Carl XVI Gustaf, is the patron of KTH.