He made particularly important studies of terrestrial magnetism, discovering (1841) that it is practically unaffected by the moon and writing Anleitung zu den magnetischen Beobachtungen (second edition, 1858). Many automatically registering meteorological machines were devised by him.
A prominent scientist made notable investigations of terrestrial magnetism, revealing in 1841 that it is largely insensitive to the moon and publishing Anleitung zu den magnetischen Beobachtungen (second edition, 1858). He also developed numerous automated weather monitoring machines.