Heinrich Schellen

Thomas Joseph Heinrich Schellen (born March 30, 1818 in Kevelaer , † September 3, 1884 in Cologne ) was a German school director. In the fall of 1838 Heinrich Schellen graduated from the Friedrich-Wilhelm-Gymnasium in Cologne . In 1841 he passed a probationary year as a teacher at the Friedrich-Wilhelm-Gymnasium in Cologne, from 1842 to 1851 he was a senior teacher at the Realschule in Düsseldorf. Then he was appointed director of the newly founded secondary school with attached provincial trade school in Münster . In 1858, instead of Caspar Garthe , he was appointed director of the high school in Cologne. In 1881 he retired.

He did not conduct his own research into his publications, but presented the current state of research, science and practice in the respective editions.

Fonts

• Methodically arranged materials for arithmetic lessons, a handbook for teachers
• Elementary mechanics
• The electromagnetic telegraph
• The transatlantic cable, its manufacture, laying and way of speaking
• Spectral analysis in its application to the materials of the earth and the nature of the heavenly bodies
• The sun; with Angelo Secchi
• The spectroscope; an adaptation of the font by Joseph Norman Lockyer
• The magnetic and dynamo-electric machines, their development, construction and practical application

literature

• Karl Ernst Hermann Krause :  bells, Thomas Joseph Heinrich . In: Allgemeine Deutsche Biographie (ADB). Volume 30, Duncker & Humblot, Leipzig 1890, p. 761 f.