Lecture

1936 — 25p. + Two plates. XLib. 8vo. Original printed wraps. FIRST EDITION. Patrick Maynard Stuart, Baron Blackett (1897-1974) served with the Royal Navy (1914-1919) and later became Professor of Physics (University of London and University of Manchester). He became a research student under Rutherford at the Cavendish Laboratory in 1921, working with cloud chambers and in 1932, with the assistance of G. Occhialini, he designed a cloud chamber in which photographs of cosmic rays were taken automatically. Early in 1933 the device confirmed the existence of the positron. His cosmic ray studies demonstrated in 1935 the formation of showers of positive and negative electrons from gamma rays in approximately equal numbers. As a consequence of his research into cosmic rays, became interested in the history of the Earth's magnetic field and turned to the study of rock magnetism. He was awarded the Nobel Prize for Physics in 1948 for his work on particle disintegration and cosmic rays. Scarce. SCIENCE BOX 3