Peter Adolf Thiessen was a German physical chemist. He voluntarily went to the Soviet Union at the close of World War II, and he received high Soviet decorations and the Stalin Prize for contributions to the Soviet program of nuclear weapons.

Świdnica is a city on the Bystrzyca River in south-western Poland in the Lower Silesian Voivodeship. As of 2021, it has a population of 55,413 inhabitants. It is the seat of Świdnica County, and also of the smaller district of Gmina Świdnica. It is the seventh largest city of the Lower Silesian Voivodeship. Świdnica became part of the Wałbrzych agglomeration on 23 January 2014.