What is the name of the founder of the famous chain of survey triangulations stretching from Hammerfest to the Black Sea?
Tartu Observatory The Tartu Observatory (Estonian: "Tartu Observatoorium" ) is the largest astronomical observatory in Estonia. It is located on the Tõravere hill, about 20 km south-west of Tartu in Nõo Parish, Tartu County. The old Tartu Observatory located in Tartu city centre, is known internationally for its connection to Friedrich Georg Wilhelm von Struve and the Struve Geodetic Arc, of which it is the first reference point.
Karl von Terzaghi Karl von Terzaghi (October 2, 1883 – October 25, 1963) was an Austrian civil engineer, geotechnical engineer and geologist known as the "father of soil mechanics".