CHRISTIAN

See also:

• LUDWIG, KARL FRIEDRICH WILHELM (1816—1895)
• LUDWIG, OTTO (1813-1865)

LUDWIG

See also:

• CHRISTIAN LUDWIG IDELER (1766–1846)

IDELER (1766–1846)  , German chronologist and astronomer, was born near Perleberg on the 21st of September 1766 . After holding various official posts under the Prussian government he became professor at the university of Berlin in 1821, and eighteen years later foreign member of the Institute of France . From 1816 to 1822 he was tutor to the young princes William Frederick and Charles . He died in Berlin on the loth of August 1846 . He devoted his life chiefly to the examination of ancient systems of chronology . In 1825–1826 he published his great work, Handbuch der mathematischen and technischen Chronologie (2 vols.; 2nd ed., 1883), re-edited as Lekrbuch der Chronologie (1831); a supplementary volume, Die Zeitrechnung der Chinesen, appeared in 1839 . Beside these important works he wrote also Untersuchungen fiber d . Ursprung and d . Bedeutung d . Sternnamen (r8og) and Uber d . Ursprung d . Thierkreises (1838) .

With Nolte he published handbooks on

English and French language and literature . His son, Junius LUDWIG IDELER (18o9-1842), wrote Meteorologia veterum Graecorum et Romanorum (1832) .