Patrick Blackett

Rock Magnetism and Movement of Continents

Sir Chandrasekhara Raman

Physics of Crystals (German and English Presentation)

Paul Dirac

Electrons and the Vacuum

Hideki Yukawa

Elementary Particles

Werner Heisenberg

Problems in the theory of elementary particles (German presentation)

Sir John Cockcroft

Scientific and Technical Problems in the Development of Nuclear Power

Max von Laue

From Copernicus to Einstein (German Presentation)