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Cover of String, Straight-edge and Shadow: The Story of Geometry

String, Straight-edge and Shadow: The Story of Geometry

✍ Scribed by Diggins, Julia E

Book ID
110477721
Publisher
Floris Books
Year
2018
Tongue
English
Weight
5 MB
Category
Fiction
ISBN-13
9781782505020

No coin nor oath required. For personal study only.

✦ Synopsis

From the early peoples who marvelled at the geometry of nature β€” the beehive and bird's nest β€” to ancient civilisations who questioned beautiful geometric forms and asked 'why?', the story of geometry spans thousands of years. Using only three simple tools β€” the string, the straight-edge and the shadow β€” human beings revealed the basic principles and constructions of elementary geometry. Weaving history and legend, this fascinating book reconstructs the discoveries of mathematics's most famous figures. Through illustrations and diagrams, readers are able to follow the reasoning that lead to an ingenious proof of the Pythagorean theorem, an appreciation of the significance of the Golden Mean in art and architecture, or the construction of the five regular solids. This insightful and engaging book makes geometry accessible to everyone. Readers will be fascinated with how the knowledge and wisdom of so many cultures helped shape our civilisation today. String,...

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String, Straightedge and Shadow the Stor
String, Straightedge and Shadow the Story of Geometry
✍ Diggins, Julia E πŸ“‚ Fiction πŸ“… 1965 πŸ› Jamie York Press 🌐 English βš– 5 MB

String, Straightedge, and Shadow: The Story of Geometry is a beautifully illustrated book that is a must-read for students learning geometry or for parents helping them through their first geometry course. Julia Diggins masterfully recreates the atmosphere of ancient times, when men, using three sim

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On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry
✍ C.T. McCarthy; A. NΓ­ Annaidh; M.D. Gilchrist πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 802 KB

In Part I of this paper a new metric, titled the ''blade sharpness index" or ''BSI", for quantifying the sharpness of a straight edge blade when cutting soft solids was derived from first principles and verified experimentally by carrying out indentation type cutting tests with different blade types