knife edges. Bessel didn't construct such a pendulum, but in 1864 Adolf Repsold, under contract to the Swiss Geodetic Commission, developed a symmetric...

Adolf Repsold continued the well-known astronomical instrument firm as the A. & G. Repsold company, which later became A. Repsold und Söhne (Repsold & sons)...

(theodolite) instrument made by Repsold was used in the geodetic surveys of Friedrich Georg Wilhelm Struve. Repsold made his son Johann Adolf (also known...

Alpha Centauri. Precise measurements with a new meridian circle from Adolf Repsold allowed Bessel to notice deviations in the motions of Sirius and Procyon...

He got new up-to-date instruments, including two meridian circles from Repsold and Reichenbach, and a heliometer from Fraunhofer. The scientific activity...

equality for women and men. Through her younger brother and her fiancé Wilhelm Repsold (a sculptor and graphic artist) she came to the land reform movement...

the original site of Hamburg Observatory, built in 1802 by Johann Georg Repsold and moved to Bergedorf in 1912. The stadium was located on the Heiligengeistfeld...

predecessor, Wilhelm Klinkerfues, Schur was very successful in modernizing the inadequate equipment of the observatory, acquiring a new, large Repsold heliometer...

construction in 1875, in the Neustadt district. The main instrument was a 50 cm Repsold refractor, which saw first light in 1880 (see Great refractor). At the...

circles (produced by Johann Georg Repsold and Georg Friedrich von Reichenbach in 1818 and 1819. Gauss was succeeded by Wilhelm Weber and Peter Gustav Lejeune...