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Annotation Beginning with a concise review of the physics and chemistry of polymers and their structure and morphology, this book goes on to describe and explain the common methods of characterizing polymers, including optical microscopy, scanning electron microscopy and transmission electron microscopy, among others. Also covered are the characterization and modification of such surface properties as adhesion, wetting, tribology, and surface thermodynamics.
During the last 20 years interest in high-resolution x-ray diffractometry and reflectivity has grown as a result of the development of the semiconductor industry and the increasing interest in material research of thin layers of magnetic, organic, and other materials. For example, optoelectronics requires a subsequent epitaxy of thin layers of different semiconductor materials. Here, the individuallayer thicknesses are scaled down to a few atomic layers in order to exploit quantum effects. For reasons of electronic and optical confinement, these thin layers are embedded within much thicker cladding layers or stacks of multilayers of slightly different chemical composition. It is evident that the interface quality of those quantum weHs is quite important for the function of devices. Thin metallic layers often show magnetic properties which do not ap pear for thick layers or in bulk material. The investigation of the mutual interaction of magnetic and non-magnetic layers leads to the discovery of colossal magnetoresistance, for example. This property is strongly related to the thickness and interface roughness of covered layers.
This is the first comprehensive study in English of Czech society and politics in the High Middle Ages. It paints a vivid portrait of a flourishing Christian community in the decades between 1050 and 1200. Bohemia's social and political landscape remained remarkably cohesive, centered on a throne in Prague, the Premyslid duke who occupied it, a society of property-owning freemen, and the ascendant Catholic church. In decades fraught with political violence, these provided a focal point for Czech identity and political order. In this, the Czechs' heavenly patron, Saint Vaclav, and the German emperor beyond their borders too had a role to play. An impressive, systematic dissection of a medieva...
This volume is the first international collection of the best physics problems (both theoretical and experimental) given at the national physics competitions for high school students in different countries. The book introduces the short history of the International Physics Olympiad, the Statutes, the Syllabus, the statistical data including complete list of winners and a collection of national reports. Each of the national report will contains — as a main part — the best theoretical and experimental problems (with complete solutions) given at the national competition or at the training of the team before the international competition. Taking into account that at present the International Physics Olympiad involves about 35 countries, we are sure that the book will be interesting for everybody involved with physics education not only with the physics olympiads.
Publisher Description
The second edition of a most unconventional, subjective and slightly politically incorrect pub guide of Prague.
In 1417 a bishop was kidnapped and held in a remote castle in Bohemia where he was forced to consecrate to the priesthood as many as 100 candidates. These priests belonged to the heretical movement of Hussite reformers. Though well-known amongst specialists, this unprecedented episode has never been systematically examined with a view to understanding if the coerced ordinations were lawful. Issues around legitimacy raise numerous questions and the narrative is situated at the compelling intersection of medieval heresy, theology, and canon law. The notion of kidnapping a bishop and forcing him to perform religious functions, consonant with the will of his tormentors, is arresting. More puzzling, the agents of coercion continued to value aspects of a faith they appeared to reject. They had no intention of practicing obedience to the Roman Church, its hierarchy or laws. The modern reader may be perplexed to learn that those responsible for the abduction believed a Roman prelate was necessary as an imprimatur of legitimation if their own religious practices were to survive. The episode, unique in medieval European history, presents an intellectual thriller.
Describes the earliest people to arrive in Bohemia, the first rulers and the origins of the Premyslid dynasty, the founding of Prague, and the early phases of Christianization. This title covers the period from 1037 to 1092, the age of Duke Bretislav I and his five contentious sons. It provides the oldest history of a Slavic people