Table of Contents

The Foundation and the Key Role of Werner Siemens; Some Memoranda at the Beginning; The Start under President Hermann von Helmholtz; The Institute as a Model; The Optical Laboratory and the Birth of the Quantum Theory; The Low-Temperature Laboratory and the Discovery of the Meissner Effect; The Chemical Laboratory and the Discovery of New Elements; The Laboratory for Radioactivity; The Imperial Institute and Albert Einstein; Counting and Measuring; Fundamental Constants; The Meter Convention; The Presidents of the Institute until 1933; The Institute under the Nazi Dictatorship and the New Beginning.