OLE Romer (Paperback)

High Quality Content by WIKIPEDIA articles Ole Christensen Romer (25 September 1644, Arhus - 19 September 1710, Copenhagen) was a Danish astronomer who in 1676 made the first quantitative measurements of the speed of light. In scientific literature alternative spellings such as "Roemer," "Romer," or "Romer" are common. Romer was born 25 September 1644 in Arhus to a merchant and skipper Christen Pedersen and Anna Olufsdatter Storm, daughter of an alderman. Christen Pedersen had taken to using the name Romer, which means that he was from Romo, to disambiguate himself from a couple of other people named Christen Pedersen. There are few sources on Ole Romer until his immatriculation in 1662 at the University of Copenhagen, at which his mentor was Rasmus Bartholin who published his discovery of the double refraction of a light ray by Iceland spar (calcite) in 1668 while Romer was living in his home. Romer was given every opportunity to learn mathematics and astronomy using Tycho Brahe's astronomical observations, as Bartholin had been given the task of preparing them for publication.