Olof Hiorter Olof Hiorter Olof Petrus (or Peter) Hiorter (or Hjorter) (1696–1750) was a Swedish astronomer. After studying in the Netherlands, he was appointed lecturer at the University of Uppsala in 1732 to fill the vacant position of Anders Celsius then on his grand tour of European observatories. From 1737 onwards, he studied together with Celsius the aurora phenomenon and a number of astronomy subjects (solar eclipse, comet like the one of 1744, latitude measurements). Pehr Wilhelm Wargentin was his pupil. Hiorter was elected a member of the Royal Swedish Academy of Sciences in 1745 and appointed "Observator Regius" - "Royal Astronomer"
Anders Henrik Bull Anders Henrik Bull Anders Henrik Bull (25 January 1875 – after 1909) was a Norwegian electrical engineer. He was born in Minneapolis as the son of ophthalmologist Ole Bornemann Bull (1842–1916) and his first wife Marie Cathrine Lund (1843–1884). The family moved to Norway in 1876. He took his engineering education in Kristiania and Hannover. He returned to Norway from Hannover in 1901, and became noted in the engineering community for his pioneering work on wireless telegraphy. He also worked for Norsk Hydro, as a consultant to Kristian Birkeland, from 1906 to 1909, in that company's formative phase. He married