geodetic instrument
21General relativity — For a generally accessible and less technical introduction to the topic, see Introduction to general relativity. General relativity Introduction Mathematical formulation Resources …
22Regional Reference Frame Sub-Commission for Europe — Infobox Union name= EUREF country= affiliation= International Association of Geodesy members= more than 30 countries full name= Regional Reference Frame Sub Commission for Europe native name= founded= 1987 current= head= dissolved date= dissolved …
23geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
24Optical interferometry — combines two or more light waves in an optical instrument in such a way that interference occurs between them. Early interferometers used white light sources and also monochromatic light from atomic sources (e.g., Young s double slit experiment… …
25Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… …
26Julius Erasmus Hilgard — (January 7, 1825 – May 9, 1890) was a German American engineer.Julius Erasmus Hilgard [ [http://books.google.com/books?id=SddRAAAAMAAJ pg=PA150 Julius Erasmus Hilgard 1825 1890] A History of the First Half century of the National Academy of… …
27Levelling — For other uses, see Levelling (disambiguation). Single levelling redirects here. For other uses, see Single level (disambiguation). Levelling or leveling is a branch of surveying, the object of which is 1) To find the elevation of a given point… …
28Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… …
29Gaithersburg Latitude Observatory — Infobox nrhp | name =Gaithersburg Latitude Observatory nrhp type = nhld caption = Gaithersburg latitude observatory location= Gaithersburg, Maryland lat degrees = 39 lat minutes = 8 lat seconds = 12 lat direction = N long degrees = 77 long… …
30Liste der Erdbeobachtungssatelliten — Das ist die Liste der Erdbeobachtungssatelliten. Chronologische Übersicht (unvollständig) Inhaltsverzeichnis: 1960er · 1970er · 1980er · 1990er · 2000er · 2010er Startdatum Mission Bild Organisation (Land) Bemerkung 1960er …
