By Yataro Sekido, Harry Elliot
On the celebration of the overseas convention on Cosmic Rays held in Kyoto in August 1979 5 elderly participants of the cosmic ray fraternity, H. Elliot, V. L. Ginzburg, B. Peters, Y. Sekido, and J. A. Simpson met jointly as a cocktail party dedicated to the joy of eastern food and recollections of our more youthful days. This friendly celebration known as to of our personal age in addition to a few eminent seniors now not current on the brain the various associates convention whose reminiscences could have extra enriched and enlivened our night. by the point the dinner got here to an finish we had agreed that the compilation of a extra broad choice of own recollections will be an engaging and priceless venture. hence, the following day we held an article assembly to attract up an inventory of capability authors and folks, the current editors, began paintings at the undertaking. In placing the ebook jointly our goal has been to attempt to catch and checklist via those own money owed anything of the ambience, the buzz and the frustrations of study in cosmic rays as skilled at the start hand via a few of the practi tioners within the box. It hasn't ever been our goal that it may contain a scientific heritage of the topic. Neither, regrettably, can it's an absolutely consultant assortment considering the fact that functional limits to the dimensions of the quantity by myself could prevent that.
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Additional resources for Early History of Cosmic Ray Studies: Personal Reminiscences with Old Photographs
Sample text
In Geiger's laboratory he was then introduced to the experimental state of the art in radioactivity. g. Stuhlinger, 1946) had already made himself a name through his work in Lord Rutherford's laboratory between 1906 and 1912, particularly by the fundamental experiments on the atomic structure, carried out jointly with Marsden, and on several rules of alpha-decay. In connection with this account, it is remarkable * Max-Planck-Institut fUr Aeronomie (emeritus), Katlenburg-Lindau, W-Germany. ) Figure I is displaced to page 33 (Old Photographs).
Das war ein Ergebnis, welches vollkommen neue Gesichtspunkte schuf: es war der Beweis erbracht, dass in 5000 m Hohe eine viel starkere GammaStrahlung wirkt als auf der Erde. Die StraWung der Erde ist in diesen Hohen langst unwirksam. Wenn man an der Ansicht festhalt, dass nur die bekannten radioaktiven Produkte in der Atmosphare eine Gamma-Strahlung erregen, so mtisste man zur Erklarung der von mir beobachteten Strahlungserhohung in 5000 m annehmen, dass zufallig gerade in dieser Hohe eine lokale Anhaufung radioaktiver Materie stattgefunden habe.
Geitel und Wilson hatten fast gleichzeitig festgestellt, daB staubfreie Luft auch in geschlossenen GefaBen stets schwach leitet. Als Ursache nahmen Elster u. Geitel Spuren radioaktiver Stoffe in der Luft selbst oder in den GefaBwanden an. Wilson erwog als ionisierendes Agens eine Strahlung, deren Quelle auBerhalb der Atmosphare liegen konnte (Wilson, 1901). Er schreibt: " ... whether the continuous production of ions in dust-free air could be explained as being due to radiation from sources outside our atmosphere, possibly radiation like Rontgen rays or like cathode rays, but of enormously greater penetrating power".