A Practical Introduction To Spherics And Nautical Astronomy (1796)

""A Practical Introduction To Spherics And Nautical Astronomy"" is a book written by Patrick Kelly and published in 1796. The book is a comprehensive guide to the fields of spherics and nautical astronomy, which were essential to navigation in the 18th century. The book begins with an introduction to the principles of spherics, which is the study of the properties of spheres, and how they relate to the measurement of the earth and the stars. It then moves on to nautical astronomy, which is the application of astronomy to navigation at sea. The book covers topics such as the celestial sphere, the measurement of time, the use of the sextant, and the calculation of latitude and longitude.Throughout the book, Kelly provides practical examples and exercises to help readers understand the concepts and apply them to real-life situations. The book is written in a clear and concise style, making it accessible to readers with a basic understanding of mathematics and astronomy.Overall, ""A Practical Introduction To Spherics And Nautical Astronomy"" is an important historical document that provides insight into the methods and techniques used by navigators in the 18th century. It is also a valuable resource for anyone interested in the history of science and technology.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.