Holoscopy
Download Holoscopy PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Holoscopy book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages.
Holoscopy
Holoscopy is a new tomographic imaging modality that combines techniques of digital holography with Fourier-domain optical coherence tomography (FD-OCT). Dierck Hillmann gives a theoretical introduction to the mathematics and physics of holoscopy and develops an efficient numerical reconstruction procedure. Compared to FD-OCT, holoscopy provides unique advantages by enabling tomographic imaging without a limited depth of focus, but results in an increased numerical cost for reconstruction. In further chapters, the author introduces techniques for FD-OCT that are relevant to holoscopy as well. He demonstrates and compares numerical reconstruction methods for FD-OCT and shows how motion and dispersion artifacts in FD-OCT can be numerically compensated.
Coping with Evil
"I have much more to tell you, but you cannot grasp it now. But when the Spirit of truth comes, He will guide you into the whole truth: for He will not speak on His own authority but will tell what is told Him, and will announce to you the things that are to come." --John 16:12,13 (Williams translation) Coping with Evil addresses one of the most important topics for all humanity--evil. The menace of evil seems stronger today than ever before. Can evil be defeated? Do we have the courage even to look at its root causes? Drawing on the spiritual investigations of Rudolf Steiner, Sri Aurobindo, and others and from his own inner work, Bruce McCausland takes us on a fascinating journey into the hidden recesses of this very timely subject, helping us understand and cope with today's events and our daily lives. What is evil? What is its source or sources? How should we view evil and those who perpetrate it? Using what he calls a holoscopic approach, McCausland stresses the importance of how we look at a problem. Traditional means no longer suffice and have proven inadequate to the task. By its very nature, evil is illusive and fraught with emotion. These obstacles must be overcome if we are to succeed in examining this manifold menace in a meaningful, productive manner. But whatever we do, we cannot ignore it. The greatest evil, it has been noted, is indifference toward evil. McCausland discusses the sources of evil in the form of spirit beings--"spiritual adversaries"--called Lucifer and Ahriman. He explains how these two beings interact with each other and with humanity as the two extremes of evil, with goodness in the center. In the end, we discover ways to deal with evil, both as individuals and as a society. In today's climate of fear and its exploitation on every side, the question of evil has become an urgent matter of human survival. Those who watch or read the news can use this guidebook to understand the forces at work behind daily events. It guides the reader through the confusion caused by evil and toward inner freedom.
Basics of Virtual Reality
Today, the reality we know can be recorded and reproduced true to reality using technical processes. Space and time are recreated virtually as a copy in artificial reality. However, the reproduction of virtual reality is not limited to a mere copy of what exists. A visitor to the virtual space does not have to be content with the pixelated image of the old familiar, but can encounter unreal phenomena in the illusory world that never existed in real life or are even physically impossible. This enables an expansion of the recorded reality and allows the perception of surprisingly new perspectives. A perspective denotes the perception of a fact from a certain point of view and corresponds to the way of looking at things. But a perspective is also the observation of a scene from a viewing position. From different perspectives the illusion of reality arises during the reproduction by observation. This vision is not based on imagination or hallucination, but is the basic function of virtual reality. This book describes the concepts, systems, and technologies used to create virtual reality from its ancient beginnings to the present, and provides a glimpse into a possible future. This book is a translation of the original German 1st edition Grundlagen der virtuellen Realität by Armin Grasnick, published by Springer-Verlag GmbH Germany, part of Springer Nature in 2020. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.