Egil Andersen Hylleraas (May 15, 1898 – October 28, 1965) was a distinguished Norwegian theoretical physicist known for his simple but elegant method for
predicting the ground state energy of two-electron atoms as well as trial wave functions for many-electron atoms.
Author: Unknown photographer (not specified in book) Source: Academic biographical book entitled "Norges filosofer og realister" published 1933 in Norway.[1] License: PD Norway