by 0. R FRISCH. F.R.S.
Jacksonian Professor of Physics, University of Cambridge
In June it appeared that. from experiments carried out at Brook haven, another of the principles of symmetry, a basic principle of contemporary physics, had been overthrown. Now reports on work at CERN throw doubts on this. Tonight, Professor Frisch reviews the developments since the tirst viola tior of a fundamental symmeiry -the non-conservation of parity-was discovered ten years ago.