Divided Spheres: Geodesics and the Orderly Subdivision of the Sphere

Product Description
Praise for the previous edition
[. . .] Dr. Popko’s elegant new book extends both the science and the art of spherical modeling to include Computer-Aided Design and applications, which I would never have imagined when I started down this fascinating and rewarding path.
His lovely illustrations bring the subject to life for all readers, including those who are not drawn to the mathematics. This book demonstrates the scope, beauty, and utility of an art and science with roots in antiquity. [. . .] Anyone with an interest in the geometry of spheres, whether a professional engineer, an architect or product designer, a student, a teacher, or simply someone curious about the spectrum of topics to be found in this book, will find it helpful and rewarding.– Magnus Wenninger, Benedictine Monk and Polyhedral Modeler
Ed Popko's comprehensive survey of the history, literature, geometric, and mathematical properties of the sphere is the definitive work on the subject. His masterful and thorough investigation of every aspect is covered with sensitivity and intelligence. This book should be in the library of anyone interested in the orderly subdivision of the sphere. – Shoji Sadao, Architect, Cartographer and lifelong business partner of Buckminster Fuller
Edward Popko's Divided Spheres is a "thesaurus" must to those whose academic interest in the world of geometry looks to greater coverage of synonyms and antonyms of this beautiful shape we call a sphere. The late Buckminster Fuller might well place this manuscript as an all-reference for illumination to one of nature's most perfect inventions. – Thomas T. K. Zung, Senior Partner, Buckminster Fuller, Sadao, & Zung Architects.
This first edition of this well-illustrated book presented a thorough introduction to the mathematics of Buckminster Fuller’s invention of the geodesic dome, which paved the way for a flood of practical applications as diverse as weather forecasting and fish farms. The author explained the principles of spherical design and the three classic methods of subdivision based on geometric solids (polyhedra).
This thoroughly edited new edition does all that, while also introducing new techniques that extend the class concept by relaxing the triangulation constraint to develop two new forms of optimized hexagonal tessellations. The objective is to generate spherical grids where all edge (or arc) lengths or overlap ratios are equal.
New to the Second Edition
New Foreword by Joseph Clinton, lifelong Buckminster Fuller collaborator
A new chapter by Chris Kitrick on the mathematical techniques for developing optimal single-edge hexagonal tessellations, of varying density, with the smallest edge possible for a particular topology, suggesting ways of comparing their levels of optimization
An expanded history of the evolution of spherical subdivision
New applications of spherical design in science, product design, architecture, and entertainment
New geodesic algorithms for grid optimization
New full-color spherical illustrations created using DisplaySphere to aid readers in visualizing and comparing the various tessellations presented in the book
Updated Bibliography with references to the most recent advancements in spherical subdivision methods
Review
"Divided Spheres presents a wealth of ideas and images for anyone interested in spherical constructions. The section on the history of geodesic dome design and the chapter with new material on rotegrities and nexorades are particularly notable.
Popko's book is sure to spark the creative juices of readers who love geometry and who think about making physical spherical structures."– George Hart, Mathematician and Sculptor"I value Divided Spheres highly, as a pithy primer for anyone wishing a fresh approach to spherical geometry, and to geometry in general. As a curriculum developer, I include it in any syllabus that also includes R. Buckminster Fuller's Synergetics, as a complementary and e