Johann Joseph von Prechtl

Johann Joseph Ritter von Prechtl (16 November 1778, Bischofsheim, Grand-Dukal Würzburg (today's) Lower Franconia[1] – 28 October 1854, Wieden No.

54 (today's Paniglgasse, 4th district of Vienna)) was a German-born Austrian (since 1802) technologist and educator.

From 1796 he studied philosophy, theology and legal science in Würzburg, later working as a private instructor outside of Brünn, and afterwards as a teacher of natural sciences, chemistry and physics at a secondary school in Vienna (1810–14).

Reportedly, in 1818, there were 25 operational public gas lanterns in Vienna.

[2][3] With Karl Karmarsch (1803–79), he was editor of a multi-volume encyclopedia of technology, Technologische Encyklopädie oder alphabetisches Handbuch der Technologie, der technischen Chemie und des Maschinenwesens (Technological encyclopedia or an alphabetic textbook of technology, chemical engineering and mechanical engineering).