Georg Balthazar von Neumayer (21 June 1826 – 24 May 1909), was a German polar explorer and scientist who was a proponent of the idea of international cooperation for meteorology and scientific observation.
Born in Kirchheimbolanden, Palatinate, Neumayer finished his education in geophysics and hydrography in Munich, Bavaria in 1849; and becoming much interested in polar exploration, continued his studies in terrestrial magnetism, oceanography, navigation, and nautical astronomy. To obtain practical experience he made a voyage to South America, and after his return gave a series of lectures at Hamburg on Maury's theories of the ocean, and recent improvements in navigation. He then decided to go to Australia, shipped as a sailor , and arrived at Sydney in 1852.
After trying his fortune on the goldfields, Neumayer gave lectures on navigation to seamen, and spent some time in Tasmania at the observatory in Hobart. He returned to Germany in 1854 convinced that Australia offered a great field for scientific exploration, obtained the support of the King of Bavaria and encouragement from leading British scientists. He sailed again for Australia and arrived in Melbourne in January 1857. He asked the government of Victoria to provide him with a site for an observatory, about £700 for a building, and about £600 a year for expenses. He had brought with him a collection of magnetical, nautical and meteorological instruments valued at £2000, which had been provided by the King of Bavaria.
Neumayer suggested as a suitable site a block of land not far from the present position of the observatory, but this was not granted. He was, however, allowed the use of the buildings of the signal station on Flagstaff Hill creating the Flagstaff Observatory for Geophysics, Magnetism and Nautical Science at what is now Flagstaff Gardens in Melbourne, Australia. From 1 March 1858 he carried on the systematic registration of meteorological and nautical data. A few weeks later he added regular observations on atmospheric electricity and changes in the magnetic elements.