Anders Celsius magnitude (a measure of brightness) of certain stars. This was the first attempt to measure the intensity of starlight with a tool other than the human eye. He made observations of eclipses and various astronomical objects and published catalogues of carefully determined magnitudes for some 300 stars using his own photometric system (mean error=0.4 mag). Celsius was the first to perform and publish careful experiments aiming at the definition of an international temperature scale on scientific grounds. In his Swedish paper "Observations of two persistent degrees on a thermometer" he reports on experiments to check that the freezing point is
Anders Grøndal Anders Grøndal Anders Grøndal (born 4 March 1984) is a Norwegian rally and hill climb driver. His co-driver is Trond Svendsen. He has so far won: 5 Norwegian championship gold, 3 Norwegian championship silver, 2 Norwegian championship bronze Anders Grøndal is the third generation rally driver in his family. He grew up with motorsport. His grandfather Nils Fredrik Grøndal and father Stein Grøndal were active rally and rally cross drivers. His uncle Knut Fredrik Grøndal was also a Norwegian hill climb champion. In 2002 Anders and the team visited former works driver John Hauglands Rally School to see what the