Prof Ernest George Coker FRS FRSE MIME MICE Wh.Ex. (26 April 1869 – 9 April 1946) was a British mathematician and engineer. He won the Howard N. Potts Medal for Physics in 1922, and the Rumford Medal for work on polarised light in 1936. He was an expert on stress analysis and Photoelasticity.[1] He contributed to Encyclopædia Britannica and other works under the initials E.G.C.