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.
He conducted particularly significant studies of terrestrial magnetism, uncovering (1841) that it is largely impervious to the moon and writing Anleitung zu den magnetischen Beobachtungen (second edition, 1858). Many self-operating meteorological devices were created by him.