XXIX ESC General Assembly, Sept. 12-17, 2004 - GFZ

1888-90 First proof of the existance of the
CHANDLER wobble with the
zenite telescope of WANSCHAFF
by Th. ALBRECHT (1843-1915).
1898-1904 First precision determination of
the absolute gravity value g by
KÜHNEN and FURTWÄNGLER
g = 9812740 ± 30 μm/s exp2
It served from 1909-71 as the
world gravity reference value
→ Potsdam Gravity System
1899 • Foundation of the International
Latitude Service (ILS) with its
Central Bureau in Potsdam until
1922 (then in Mizusawa, Japan)
Peter Bormann XXIX ESC General Assembly, Sept. 12-17, 2004