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Light and light based technologies have played an important role in transforming our lives via scientific contributions spanned over thousands of years. In this book we present a vast collection of articles on various aspects of light and its applications in the contemporary world at a popular or semi-popular level. These articles are written by the world authorities in their respective fields. This is therefore a rare volume where the world experts have come together to present the developments in this most important field of science in an almost pedagogical manner. This volume covers five aspects related to light. The first presents two articles, one on the history of the nature of light, ...
Our Universe is majestic, magnificent in its splendour and deeply mysterious at the same time. Throughout this book, we shall try to act as Cosmic Detectives. Through careful observation of some very elementary clues scattered across the sky, we try to gradually discover some of the deepest and darkest secrets or mysteries of the Universe. From our familiar shoreline on the Earth, we dare to venture into the harrowing depths of vast unknown Cosmic abyss. Believe me, it will be a fascinating journey indeed!
Shortlisted for the 2023 Royal Society Science Book Prize A structural engineer examines the seven most basic building blocks of engineering that have shaped the modern world. Some of humanity’s mightiest engineering achievements are small in scale—and, without them, the complex machinery on which our modern world runs would not exist. In Nuts and Bolts, structural engineer Roma Agrawal examines seven of these extraordinary elements: the nail, the wheel, the spring, the magnet, the lens, the string, and the pump. Tracing the evolution from Egyptian nails to modern skyscrapers, and Neanderthal string to musical instruments, Agrawal shows us how even our most sophisticated items are built ...
The history of Twelver Shīʿī Islam is a history of attempts to deal with the abrupt loss of the Imam. In Encounters with the Hidden Imam in Early and Pre- Modern Twelver Shīʿī Islam, Omid Ghaemmaghami demonstrates that in the early years of what came to be known as the Greater Occultation, Shīʿī authorities maintained that all contact with the Imam had been sundered, forcing him to remain incommunicado until his (re)appearance . This position, however, proved untenable to maintain. Almost a century after the start of the Greater Occultation, prominent scholars began to concede the possibility that some Shīʿa can meet the Hidden Imam. Accounts of encounters with the Imam from the Greater Occultation soon began to appear, adumbrating their exponential growth in later centuries.
Implant dentistry has changed and enhanced significantly since the introduction of osseointegration concept with dental implants. Because the benefits of therapy became apparent, implant treatment earned a widespread acceptance. Therefore, the need for dental implants has caused a rapid expansion of the market worldwide. Dental implantology continues to excel with the developments of new surgical and prosthodontic techniques, and armamentarium. The purpose of this book named Current Concepts in Dental Implantology is to present a novel resource for dentists who want to replace missing teeth with dental implants. It is a carefully organized book, which blends basic science, clinical experience, and current and future concepts. This book includes ten chapters and our aim is to provide a valuable source for dental students, post-graduate residents and clinicians who want to know more about dental implants.
This book describes how we find and compare different theories in science, Biblical studies, and everyday life. It offers a new method of diagramming arguments that helps investigators discuss and assess competing interpretations, demonstrating its usefulness with detailed test cases from Biblical studies.
The Iranian Constitutional Revolution was the twentieth century’s first such political movement in the Middle East. It represented a landmark in Iranian history because of the unlikely support it received from Shi‘ite clerics who historically viewed Western concepts with suspicion, some claiming constitutionalism to be anti-Islamic. Leading the support was Muhammad Kazim Khurasani, the renowned Shi‘ite jurist who conceived of a supporting role for the clergy in a modern Iranian political system. Drawing on extensive analysis of religious texts, fatwas, and articles written by Khurasani an other pro- and anti-constitutionalists, Farzaneh provides a comprehensive and illuminating interpr...
Structured Light for Optical Communication highlights principles and applications in the rapidly evolving field of structured light in wide-ranging contexts, from classical forms of communication to new frontiers of quantum communication. Besides the basic principles and applications, the book covers the background of structured light in its most common forms, as well as state-of-the-art developments. Structured light has been hailed as affording outstanding prospects for the realization of high bandwidth communication, enhanced tools for more highly secure cryptography, and exciting opportunities for providing a reliable platform for quantum computing.This book is a valuable resource for graduate students and other active researchers, as well as others who may be interested in learning about this cutting-edge research field. - Broadly covers the use of structured light in communication applications - Highlights quantum and photonics principles, emerging and future applications - Assesses the major challenges of using structured light for communication applications
Common sense philosophy holds that widely and deeply held beliefs are justified in the absence of defeaters. While this tradition has always had its philosophical detractors who have defended various forms of skepticism or have sought to develop rival epistemological views, recent advances in several scientific disciplines claim to have debunked the reliability of the faculties that produce our common sense beliefs. At the same time, however, it seems reasonable that we cannot do without common sense beliefs entirely. Arguably, science and the scientific method are built on, and continue to depend on, common sense. This collection of essays debates the tenability of common sense in the face ...