caption death_date death_place birth_place nationality field birth_date known_for signature image article_title name
ole 1700 rømer , portrait by jacob coning from c. 19 september 1710 copenhagen Århus danish astronomy 25 september 1644 speed of light ole rømer signature.svg ole rømer -lrb- coning painting -rrb- . jpg ole rømer
 ole rømer
ole rømer

ole christensen rømer -lrb- ; 25 september 1644 , Århus -- 19 september 1710 , copenhagen -rrb- 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 '' , `` römer '' , or `` romer '' are common .
