Personen |  Patente |   Maschinen

Schroen, Ludwig

Bitte durch passendes Bild ersetzen.

(* 17. Feb. 1799 in Weimar, † 18. Mai 1875 in Jena)

1 Leben

1819 Studied Mathematics and Astronomy in Jena

1821 Observatory Jena, assistant of Director Friedrich Posselt (1794-1823)

1823 Leader of the observatory Jena

1824 Ph.D. in meteorology; was influenced by his friend Johann Wolfgang Goethe (1749-1832)

1824 became assistant of Director Franz Xaver von Zach (1754-1832) at the observatory Seeberg near Gotha, working on astronomical calculations

1829 Director of the observatory in Jena

1834 Professor - teaching in different fields (mathematics, stoichiometry, surveying, metereology)

1835 published 3- and 5-place Logarithms

1845 got in touch with Verlagsbuchhandlung Friedrich Vieweg in Braunschweig for publishing a newly designed logarithmic table with 7 places (Schrön did not want to have it stereotyped and argued with the publisher - unsuccessfully - for years)

1846 Stöchiometrische Hilfstafeln (Stoichiometric Calculation Aids - with logarithms); Hannover

1860 Siebenstellige Gemeine Logarithmen der Zahlen von 1 bis 108000 und der Sinus, Cosinus, Tangenten und Cotangenten aller Winkel des Quadranten von 10 zu 10 Secunden - stereotyped in 3 tables; according to Prof. A. Gernerth, Vienna, who in 1863 checked the major tables of the time Schrön´s table was the most accurate one. According to General Morin, even in France Schrön´s table was preferred to the until then most popular tables from Callet.

1865 Seven-figure logarithms of numbers from 1 to 108000: and of sines, cosines, tangents, cotangents to every 10 seconds of the quadrant, with a table of proportional parts (Editor: Augustus de Morgan; from German 5th edition)

Tables in other languages to follow: French (Editor: J. Hoüel), Dutch (Editor: Bierens de Haan), Hungarian

Member of the "Kaiserlich Leopold. Carolin. Deutschen Academie der Naturforscher" und der gelehrten Gesellschaften zu Breslau, Frankfurt a.M., Halle und Jena

2 Werke

3 Weblinks

4 Sonstiges

For more details see

•  Allgemeine Deutsche Biographie Autor: Günther; page 555-556

• [ Henderson](p 128 - 129)

Diese Seite darf an allen Stellen ergänzt werden, die noch leer sind. Außerdem dürfen Zeilen hinzu gefügt werden.
Falls Sie mit einem bestehenden Inhalt nicht einverstanden sind, machen Sie bitte einen Eintrag bei der Diskussion und schicken dem Ersteller der Seite eine Mail.