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Presentation Speech by Professor H.G. Söderbaum, President of , on December 10, 1912 Your Majesty, Your Royal Highnesses, Ladies and Gentlemen. The Royal Academy of Sciences believes it is acting in strict accordance with Alfred Nobel’s will in awarding the Physics Prize to Chief Engineer Gustaf Dalén in recognition of his remarkable invention of automatic…

Presentation Speech by Dr. Å.G. Ekstrand, President of , on June 1, 1920 Ladies and Gentlemen. The Royal Academy of Sciences has decided to award the Nobel Prize in Physics for 1919 to Dr. Johannes Stark, professor in the University of Greifswald, for his discovery of the Doppler effect in canal rays and of the…

Presentation Speech by Professor , Chairman of the Nobel Committee for Physics of , on December 10, 1923 Your Majesty, Your Royal Highnesses, Ladies and Gentlemen. The Royal Academy of Sciences has awarded this year’s Nobel Prize for Physics to Doctor Robert Andrews Millikan for his work on the elementary charge of electricity and on…

Presentation Speech by Prof. H. Pleijel, Chairman of the Nobel Committee for Physics of , on December 10, 1936 Your Majesty, Your Royal Highnesses, Ladies and Gentlemen. The year 1895 is a turning-point in the history of physics: Röntgen discovered the rays that were to be called after him, and this was rapidly followed by…

Presentation Speech by Professor A.E. Lindh, member of Your Majesty, Your Royal Highnesses, Ladies and Gentlemen. The earliest known attempts to attain high pressures and to study various properties of matter under the influence of these pressures date from the beginning and middle of the 17th century. The experiments, which were carried out by extremely…

Presentation Speech by Professor I. Waller, member of Your Majesties, Royal Highnesses, Ladies and Gentlemen. By giving the Nobel Prize in Physics of this year to Sir John Cockcroft, Director of the Atomic Energy Research Establishment at Harwell, and Professor Ernest Walton of Dublin University, the Swedish Academy of Sciences has rewarded a discovery which…

Presentation Speech by Professor E. Hulthén, Chairman of the Your Majesties, Your Royal Highnesses, Ladies and Gentlemen. The notion of matter as something built up of very tiny and indivisible atoms is a heritage from classical times. Since, however, experimental research in our days has shown that the atoms in their turn are complicated structures,…

Presentation Speech by Professor Torsten Gustafsson, member of the Your Majesty, Your Royal Highnesses, Ladies and Gentlemen. From the sun, there blows a wind so hot that its atoms are split into electrically-charged particles, electrons and ions. They are attracted by the earth’s magnetic field and the electrons follow the lines of force and produce…

15 October 1974 has awarded Professor Martin Ryle and Professor Antony Hewish the 1974 Nobel Prize in Physics. Professors Ryle and Hewish have been awarded the Prize for their pioneering research in radioastrophysics: Ryle for his observations and inventions, in particular of the aperture-synthesis technique, and Hewish for his decisive role in the discovery of…