41. He serves on several international working groups on relativistic effects in geodesy and in metrology. 42. Satellite geodesy turned this thought experiment into a reality with the development of the GPS. 43. Paskvi dealt with astronomy, higher geodesy , mathematics, mechanics and theory of machines. 44. The Survey's astronomical observations and their relation to vertical geodesy gained worldwide respect. 45. Experimental determination of the gravitational potential at the geoid surface is a task in physical geodesy . 46. He served as the President, International Union of Geodesy and Geophysics ( 1987 1991 ). 47. The Center conducts research in astrophysics, Solar System physics, geodesy , and space technology. 48. Both geomatics and geoinformatics include and rely heavily upon the theory and practical implications of geodesy . 49. Sch�rer also dealt with stellar dynamics and was deeply involved as a pioneer in satellite geodesy . 50. Soerjosoemarno is also an expert in topography and geodesy who finished his education in the Netherlands.
