James MacCullagh

Professor James MacCullagh MRIA FRS
Born	1809 Landahaussy, Ireland
Died	24 October, 1847 Dublin, Ireland
Alma mater	Trinity College, Dublin (BA, MA, LLB, LLD)
Known for	Special theorem of Conical refraction (1830) Geometry of Optics
Awards	Cunningham Medal (1838) Copley Medal (1842)
Honours	Fellow of the Royal Irish Academy (MRIA) Fellow of the Royal Society (FRS)
Scientific career
Fields	Physics Geometry Optics Mathematics
Institutions	Trinity College Dublin

James MacCullagh MRIA FRS (1809 – 24 October 1847) was an Irish mathematician and scientist. He served as the Erasmus Smith's Professor of Mathematics at Trinity College Dublin beginning in 1835, and in 1843, he was appointed as the Erasmus Smith's Professor of Natural and Experimental Philosophy.^[1] MacCullagh received the Cunningham Medal of the Royal Irish Academy in 1838 for his work on the laws of crystalline reflexion and light refraction, and the Copley Medal in 1842 for his efforts on the nature of light.