New WNDSN Book Reveals the Secrets of the Sine Quadrant: The Ultimate Tool for Graphical Mathematics
BERLIN, 2022-03-14 - A new book, "Description and Explanation of the Sine Quadrant," is set to revolutionize the way we understand and use the ancient tool known as the Sine Quadrant. This instrument, first developed in 9th century Baghdad, has been used for centuries in astronomy, timekeeping, navigation, and trigonometry. But until now, there has never been a comprehensive and accessible resource that explains all of its mathematical operations.
The book, available in both German and English, delves into the history and principles of the Sine Quadrant, and provides detailed instructions for all of its basic and advanced functions. From simple sine calculations to complex astronomical computations, the book covers it all.
The Sine Quadrant is an elegant tool that uses a plumbline string attached to its vertex to perform calculations by positioning it across the scales. The instrument has sexagesimal scales, which, when combined with the 90 degree angular scale on the arc, allow a wide range of graphic calculations. It can be used to determine true vertical, calculate sine and cosine, read declination for a given day, and perform graphical computations between angles, trigonometric ratios, and sexagesimal values.
The book is an excerpt from the comprehensive GQT5 and includes 175 pages, 58 figures, 10 tables, 39 equations, an indexed glossary, and a complete bibliography. The chapters on the functions of the Sine Quadrant have been completely revised and expanded based on the results of new research, demonstrating its completeness as a "supercomputer" for solving any trigonometric problem.
"Description and Explanation of the Sine Quadrant" is a must-have for anyone interested in the history and application of this fascinating instrument. It is the only comprehensive and accessible resource on the graphical mathematics of the Sine Quadrant, and is sure to spark renewed interest in this ancient tool.
- Hard cover: 175 pages
- Published: 2022-03-14
- Language: English
- ISBN-13: 979-8768267384
- Dimensions: 5.5 x 8.5 inches
Available at:
- https://www.amazon.com/dp/B09VH6Q1HT/
- https://store.wndsn.com/products/the-sine-quadrant-excerpt-from-gqt5
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About WNDSN
Based in Berlin, WNDSN's Applied Science Lab develops and manufactures low-tech, high-utility tools and instruments with the objective of providing or enhancing "that, which can’t be improvised" in low-probability, high-impact scenarios where it is most needed, yet usually unavailable or non-permissive. The resulting products are measurement, calculation, and exploration instruments informed by the motto "Ex Mensura, Scientia" -- knowledge from measurement.
Mission
WNDSN [ˈwɪndsən] provides knowledge and tools for educating and training professionals and enthusiasts in the mastery of time and space.
WNDSN is devising instruments to measure values in the real world, calculate meaningful results from the acquired data, and process the insights as input for various problem solving tasks.
Products
WNDSN produces archival quality products that are designed with intent by combining techniques proven over centuries, bringing together the early history of science with cutting-edge, contemporary methods, resulting in iconic, timeless, high-utility designs in the spirit of the Renaissance.
WNDSN creates custom-built instruments and multi-purpose tools, metrology and illumination solutions with applications in urban reconnaissance, hostile theaters, disaster areas, and outdoor exploration.