Download or read book Ein Vierteljahrhundert moderner Physik written by Otto Haxel and published by . This book was released on 1969 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Otto Hahn and the Rise of Nuclear Physics written by W.R. Shea and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: and less as the emanation unden\'ent radioactive decay, and it became motion less after about 30 seconds. Since this process was occurring very rapidly, Hahn and Sackur marked the position of the pointer on a scale with pencil marks. As a timing device they used a metronome that beat out intervals of approximately 1. 3 seconds. This simple method enabled them to determine that the half-life of the emanations of actinium and emanium were the same. Although Giesel's measurements had been more precise than Debierne's, the name of actinium was retained since Debierne had made the discovery first. Hahn now returned to his sample of barium chloride. He soon conjectured that the radium-enriched preparations must harbor another radioactive sub stance. The liquids resulting from fractional crystallization, which were sup posed to contain radium only, produced two kinds of emanation. One was the long-lived emanation of radium, the other had a short life similar to the emanation produced by thorium. Hahn tried to separate this substance by adding some iron to the solutions that should have been free of radium, but to no avail. Later the reason for his failure became apparent. The element that emitted the thorium emanation was constantly replenished by the ele ment believed to be radium. Hahn succeeded in enriching a preparation until it was more than 100,000 times as intensive in its radiation as the same quantity of thorium.

Download or read book Miscellaneous Papers on Nebulae written by and published by . This book was released on 1900 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Time Quantum and Information written by Lutz Castell and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: The articles treat subjects such as the social responsibility of scientists, thermonuclear processes in stars and stellar neutrinos, turbulence and the emergence of planetary systems. Considerable attention is paid to the unity of nature, the nature of time, and to information about, and interpretation of, the structure of quantum theory, all important philosophical problems of our times. The last section describes von Weizsäcker's ur-hypothesis and how it will theoretically permit the construction of particles and interactions from quantized bits of information.

Download or read book Meyers Grosses Handlexikon written by Bibliographischen Instituts and published by Birkhäuser. This book was released on 1980 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Die Fakult t f r Physik The Faculty of Physics written by Gerald Badurek and published by Böhlau Verlag Wien. This book was released on 2015-10-02 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hallmark of Technical Physics at the Faculty of Physics is the close connection between research and teaching. Despite the high level of specialisation required for remaining internationally competitive in cutting-edge research, physics at TU Vienna nevertheless covers a remarkably broad range of topics that can be roughly divided into three core areas: the physics of matter, physical technology and fundamental interactions. This volume is intended to give the non-specialised reader an impression of the outstanding research and teaching done at the Faculty of Physics.

Download or read book Kerntechnik written by and published by . This book was released on 1975 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heisenberg and the Nazi Atomic Bomb Project 1939 1945 written by Paul Lawrence Rose and published by Univ of California Press. This book was released on 2023-11-10 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: No one better represents the plight and the conduct of German intellectuals under Hitler than Werner Heisenberg, whose task it was to build an atomic bomb for Nazi Germany. The controversy surrounding Heisenberg still rages, because of the nature of his work and the regime for which it was undertaken. What precisely did Heisenberg know about the physics of the atomic bomb? How deep was his loyalty to the German government during the Third Reich? Assuming that he had been able to build a bomb, would he have been willing? These questions, the moral and the scientific, are answered by Paul Lawrence Rose with greater accuracy and breadth of documentation than any other historian has yet achieved. Digging deep into the archival record among formerly secret technical reports, Rose establishes that Heisenberg never overcame certain misconceptions about nuclear fission, and as a result the German leaders never pushed for atomic weapons. In fact, Heisenberg never had to face the moral problem of whether he should design a bomb for the Nazi regime. Only when he and his colleagues were interned in England and heard about Hiroshima did Heisenberg realize that his calculations were wrong. He began at once to construct an image of himself as a "pure" scientist who could have built a bomb but chose to work on reactor design instead. This was fiction, as Rose demonstrates: in reality, Heisenberg blindly supported and justified the cause of German victory. The question of why he did, and why he misrepresented himself afterwards, is answered through Rose's subtle analysis of German mentality and the scientists' problems of delusion and self-delusion. This fascinating study is a profound effort to understand one of the twentieth century's great enigmas.

Download or read book Atomkernenergie Kerntechnik written by and published by . This book was released on 1983 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Zeitschrift f r Astrophysik written by and published by . This book was released on 1951 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Philosophical and popular writings pt 1 Physik und Erkenntnis 1927 1955 pt 2 Physik und Erkenntnis 1956 1968 pt 3 Physik und Erkenntnis 1969 1976 pt 4 Biographisches und Kernphysik Autobiographisches Laudationes Buchbesprechungen Kernphysik M nchener Festrede u a pt 5 Wissenschaft und Politik Physik im Dritten Reich Organisation der Forschung Internationale Wissenschaft A v Humboldt Stiftung Physik Technik und Gesellschaft Politische Stellungnahmen u a written by Werner Heisenberg and published by . This book was released on 1984 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Darkling written by Yasmine Galenorn and published by Penguin. This book was released on 2008-01-02 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The D'Artigo sisters, Camille, Delilah, and Menolly, are half-human, half- Fae operatives for the Otherworld Intelligence Agency. When humans begin to go missing, then turn up as newly born vampires, Menolly- an acrobat extraordinaire-turned-vampire- must face the demons haunting her memories.

Download or read book Advanced Photon Counting written by Peter Kapusta and published by Springer. This book was released on 2015-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on Time-Correlated Single Photon Counting (TCSPC), a powerful tool allowing luminescence lifetime measurements to be made with high temporal resolution, even on single molecules. Combining spectrum and lifetime provides a “fingerprint” for identifying such molecules in the presence of a background. Used together with confocal detection, this permits single-molecule spectroscopy and microscopy in addition to ensemble measurements, opening up an enormous range of hot life science applications such as fluorescence lifetime imaging (FLIM) and measurement of Förster Resonant Energy Transfer (FRET) for the investigation of protein folding and interaction. Several technology-related chapters present both the basics and current state-of-the-art, in particular of TCSPC electronics, photon detectors and lasers. The remaining chapters cover a broad range of applications and methodologies for experiments and data analysis, including the life sciences, defect centers in diamonds, super-resolution microscopy, and optical tomography. The chapters detailing new options arising from the combination of classic TCSPC and fluorescence lifetime with methods based on intensity fluctuation represent a particularly unique highlight.

Download or read book Jahresbericht Schweizerisches Institut f r Nuklearforschung written by Schweizerisches Institut für Nuklearforschung and published by . This book was released on 1987 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spying on Science written by Paul Maddrell and published by OUP Oxford. This book was released on 2006-02-16 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The years 1945-61 saw the greatest transformation in weaponry that has ever taken place, as atomic and thermonuclear bombs, intercontinental ballistic missiles and chemical and biological weapons were developed by the superpowers. It was also a distinct era in Western intelligence collection. These were the years of the Germans. Mass interrogation in West Germany and spying in East Germany represented the most important source of intelligence on Soviet war-related science, weapons development and military capability until 1956 and a key one until 1961. This intelligence fuelled the arms race and influenced Western scientific research, weapons development, and intelligence collection. Using intelligence and policy documents held in British and US archives and records of the Ministry of State Security (MfS) of the former German Democratic Republic (GDR), this book is the most penetrating study of the scientific intelligence-gathering and subversive operations of the British, US, and West German intelligence services in the period to date. East Germany's scientific potential was contained by inducing leading scientists and engineers to defect to the West, and Paul Maddrell shows that the US Government's policy of 'containment' was more aggressive than has hitherto been accepted. He also demonstrates that the Western secret services' espionage in the GDR was very successful, even though the MfS and KGB achieved triumphs against them. George Blake twice did appalling damage the MI6's spy networks. The book reveals the identity of the most distinguished scientist to spy for the CIA as yet uncovered.

Download or read book GWF Das Gas und Wasserfach written by and published by . This book was released on 1956 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Image and Logic written by Peter Galison and published by University of Chicago Press. This book was released on 1997-10 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engages with the impact of modern technology on experimental physicists. This study reveals how the increasing scale and complexity of apparatus has distanced physicists from the very science which drew them into experimenting, and has fragmented microphysics into different technical traditions.