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UFOs
Unidentified phenomena in space, in the Earth's atmosphere, and in waters are too important to leave their exploration to the military and scientific laypersons. Their proper scientific study is important for a variety of reasons; in particular, scientists and the public at large need to know the basic facts, to be informed about the way evidence is recorded, and to understand the difference been reliable evidence and fiction, as well as between plausible explanations and fantasy. With this objective, the book surveys the history of UFO observations, the variety of recorded phenomena, and recounts the efforts of investigative commissions and their published findings. Although wild rumors are demystified in the process, this is not an exercise in rumor-bashing. An open and at the same time critical mindset is the key. Many narratives and hypothesis appear implausible relative to our present state of knowledge; but this alone should not lead to their outright exclusion. Thus the author also pays attention to UFO sightings that have so far eluded explanation in terms of known physics or meteorology. Here the reader will encounter some of the more speculative but scientifically tenable proposals, for example, relating to sudden zigzag motion without apparent inertia or recognizable propulsion, yet always with a clear guide to their plausibility. Last but not least, the book outlines plans and suggestions for future research capable of revealing the existence and intentions of extraterrestrial intelligences, outer-space engineers, or technologies so far known only from science fiction.
A Theory of Harmony
In this introduction to natural-base music theory, Ernst Levy presents the essentials of a comprehensive, consistent theory of harmony developed from tone structure. A Theory of Harmony is a highly original explanation of the harmonic language of the last few centuries, showing the way toward an understanding of diverse styles of music. Basic harmony texts exist, but none supply help to students seeking threads of logic in the field. In a text abundantly illustrated with musical examples, Levy makes clear the few principles that illuminate the natural forces in harmony. He shows that general principles can be successfully extracted from the wealth of examples. This book actually provides a theory of harmony. One of the major musical minds of the twentieth century, Ernst Levy was born in Basel, Switzerland, in 1895. His musical career spanned more than seven decades, from his first public piano performance at age six. A naturalized U.S. citizen, he lived here from 1941 to 1966, teaching at the New England Conservatory, the University of Chicago, Bennington College, the Massachusetts institute of Technology, and Brooklyn College. After his retirement, Levy returned to Switzerland where he continued to compose until his death in 1981. He was an enormously productive composer, with hundreds of works to his credit including symphonies, string quartets, songs in English, French, and German, and music for solo instruments and small ensembles. His piano recordings, particularly of the last Beethoven sonatas and the Liszt sonata, have become collectors' items. He thought of himself as a successor to Reimann, immediately, and Rameau, more remotely.
Energy Systems, Drives and Automations
This book gathers selected research papers presented at the Second International Conference on Energy Systems, Drives and Automations (ESDA 2019), held in Kolkata on 28–29 December 2019. It covers a broad range of topics in the fields of renewable energy, power management, drive systems for electrical machines and automation. Also discussing a variety of related tools and techniques, the book offers a valuable resource for researchers, professionals and students in electrical and mechanical engineering disciplines.