Carl Erik Soya,, also known by the single appellation Soya, was a Danish author and dramatist. His works were often satirical provocations against double standards and dishonesty. In 1975, Soya received Denmark's foremost literary award, Grand Prize of the Danish Academy.
Carl Ferdinand Appun was a German naturalist.
On the recommendation of Alexander von Humboldt Appun was employed by Frederick William IV of Prussia as a botanist in Venezuela where excepting a one-year break in Germany, he spent ten years exploring the flora. After that he went to British Guayana, where he researched as a botanist on behalf the British government. He also visited parts of Brazil -the Rio Branco and Rio Negro on the Amazon to Tabatinga. During a visit in Germany (1868–1871) he published a set of essays in different magazines. His best known work Unter den Tropen was at that time extremely popular. In 1871 he undertook a second exploration of Guyana, where he had an accident which led to his death. His last writings were essays about Indigenous peoples in Venezuela.
Appun described many new plant species and is also known as an entomologist.
Johann Carl Friedrich Gauss was a German mathematician, geodesist, and physicist who made significant contributions to many fields in mathematics and science. Gauss ranks among history's most influential mathematicians.
Johann Friedrich Karl Keil or Carl Friedrich Keil was a conservative German Lutheran Old Testament commentator. Keil was appointed to the theological faculty of Dorpat in Estonia where he taught Bible, New Testament exegesis, and Oriental languages. In 1859 he was called to serve the Lutheran church in Leipzig. In 1887 he moved to Rödletz, where he died. Keil was a conservative critic who reacted strongly against the scientific biblical criticism of his day. He strongly supported Mosaic authorship of the Pentateuch. He maintained the validity of the historico-critical investigation of the Bible only if it proved the existence of New Testament revelation in the Scriptures. To this aim he edited his principal work, a commentary on the Bible, Biblischer Kommentar über das Alte Testament. The work remains his most enduring contribution to biblical studies. He also published commentaries on Maccabees and New Testament literature.
Carl Friedrich Freiherr von Weizsäcker was a German physicist and philosopher. He was the longest-living member of the team which performed nuclear research in Germany during the Second World War, under Werner Heisenberg's leadership. There is ongoing debate as to whether or not he and the other members of the team actively and willingly pursued the development of a nuclear bomb for Germany during this time.