Planck Driven By Vision Broken By War

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Planck

Author : Brandon R. Brown
ISBN : 9780190219475
Genre : Science
File Size : 52.98 MB
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Max Planck is credited with being the father of quantum theory, and his work laid the foundation for our modern understanding of matter and energetic processes. But Planck's story is not well known, especially in the United States. A German physicist working during the first half of the twentieth century, his library, personal journals, notebooks, and letters were all destroyed with his home in World War II. What remains, other than his contributions to science, are handwritten letters in German shorthand, and tributes from other scientists of the time, including his close friend Albert Einstein. Brown tells the story of Planck's friendship with the far more outspoken Albert Einstein, and shows how his work fits within the explosion of technology and science that occurred during his life. The story of a brilliant man living in a dangerous time, Brandon Brown gives Max Planck his rightful place in the history of science, and shows how war-torn Germany deeply impacted his life and work.
Category: Science

Quantum Space

Author : Jim Baggott
ISBN : 9780192536808
Genre : Science
File Size : 58.65 MB
Format : PDF, ePub
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Today we are blessed with two extraordinarily successful theories of physics. The first is Albert Einstein's general theory of relativity, which describes the large-scale behaviour of matter in a curved spacetime. This theory is the basis for the standard model of big bang cosmology. The discovery of gravitational waves at the LIGO observatory in the US (and then Virgo, in Italy) is only the most recent of this theory's many triumphs. The second is quantum mechanics. This theory describes the properties and behaviour of matter and radiation at their smallest scales. It is the basis for the standard model of particle physics, which builds up all the visible constituents of the universe out of collections of quarks, electrons and force-carrying particles such as photons. The discovery of the Higgs boson at CERN in Geneva is only the most recent of this theory's many triumphs. But, while they are both highly successful, these two structures leave a lot of important questions unanswered. They are also based on two different interpretations of space and time, and are therefore fundamentally incompatible. We have two descriptions but, as far as we know, we've only ever had one universe. What we need is a quantum theory of gravity. Approaches to formulating such a theory have primarily followed two paths. One leads to String Theory, which has for long been fashionable, and about which much has been written. But String Theory has become mired in problems. In this book, Jim Baggott describes ": an approach which takes relativity as its starting point, and leads to a structure called Loop Quantum Gravity. Baggott tells the story through the careers and pioneering work of two of the theory's most prominent contributors, Lee Smolin and Carlo Rovelli. Combining clear discussions of both quantum theory and general relativity, this book offers one of the first efforts to explain the new quantum theory of space and time.
Category: Science

Institutionen Und Ereignis

Author : Reinhard Blänkner
ISBN : 3525354533
Genre : History
File Size : 69.22 MB
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»Institutionen« und »Ereignis«: Sind das analytische Kategorien für eine zeitgemäße Geschichtswissenschaft? Das Thema »Institutionen« wurde im Rahmen einer Geschichtswissenschaft, die sich der internationalen kulturanthropologischen Forschung geöffnet hat, gemieden. Das Interesse am historischen Ereignis ist besonders dem strukturgeschichtlichen Blick auf die »lange Dauer« zum Opfer gefallen.Inzwischen sind die Konzepte »Institutionen« und »Ereignis« in die Theoriediskussion zurückgekehrt, massiv revidiert vor allem durch die Werke von Michel Foucault und Pierre Bourdieu. Zuweilen gilt das historische Ereignis wieder als Königsweg historischer Erkenntnis. Institutionen werden als »Korrelate von Praktiken« (P. Veyne), als »verfestigte Verhaltensmuster« (G. Göhler), als »Vermittlungsinstanzen kultureller Sinnproduktion« (K.S. Rehberg) aufgefaßt. In der historiographischen Empirie sind diese Konzepte freilich noch nicht erprobt.In diesem Band werden die gegenwärtigen institutionentheoretischen Überlegungen historisch ausgelotet. Anhand einer Serie von Beispielen von den Volksversammlungen im antiken Rom bis zu den nationalsozialistischen Konzentrationslagern prüfen die Autoren Nutzen und Grenzen der aktuellen institutionentheoretischen Diskussionen. Die Beiträge sind also Probearbeiten für eine »Methodologie des institutionellen Blicks«.
Category: History