While it is commonly stated that the last movement of Beethoven 's Fifth is the first time the trombone and the piccolo were used in a concert symphony , it is not true .
The fourth movement of this symphony is one of the first times a trombones or a piccolo is used in a symphony .
Physicist Hans Bethe used characters of point group operations in his study of ligand field theory in 1929 . Eugene Wigner used group theory to explain the selection rules of atomic spectroscopy .