Humphrey Lloyd (physicist)

Humphrey Lloyd
30th Provost of Trinity College Dublin
In office 24 February 1867 – 17 January 1881
Preceded by	Richard MacDonnell
Succeeded by	John Hewitt Jellett
Personal details
Born	(1800-04-16)16 April 1800 Dublin, Ireland
Died	17 January 1881(1881-01-17) (aged 80) Dublin, Ireland
Spouse	Dorothea Bulwer (m. 1840)
Alma mater	Trinity College Dublin (B.A., 1819; M.A., 1827; D.D., 1840)
Known for	Lloyd's mirror

Humphrey Lloyd FRS FRSE MRIA (16 April 1800 – 17 January 1881) was an Irish physicist and academic who served as the 30th Provost of Trinity College Dublin from 1867 to 1881. He was Erasmus Smith's Professor of Natural and Experimental Philosophy at Trinity College Dublin from 1831 to 1843. Lloyd is known for experimentally verifying conical refraction, a theoretical prediction made by William Rowan Hamilton about the way light is bent when travelling through a biaxial crystal. He was a Fellow of the Royal Society, and President of both the British Association and the Royal Irish Academy.^[1][2]