| 
      John Sharp
        | Spirals and the Golden Section |  20 The Glebe,Watford Herts
 WD2 6LR, England
 INTRODUCTIONThe Golden Section is a fascinating topic
    that continually generates new ideas. It also has a status that
    leads many people to assume its presence when it has no relation
    to a problem. It often forces a blindness to other alternatives
    when intuition is followed rather than logic. Mathematical inexperience
    may also be a cause of some of these problems. In the following,
    my aim is to fill in some gaps, so that correct value judgements
    may be made and to show how new ideas can be developed on the
    rich subject area of spirals and the Golden section.
 Since this special issue of the NNJ is concerned with
    the Golden Section, I am not describing its properties unless
    appropriate. I shall use the symbol f
    to denote the Golden section (f»1.61803). There are many aspects to Golden section spirals, and much
    more could be written. The parts of this paper are meant to be
    read sequentially, and it is especially important to understand
    the different types of spirals in order that the following parts
    are seen in context:Part 1. Types of spirals
    Part 2. Spirals from the Golden rectangle, triangles
    and the pentagon by approximation
    Part 3. Mathematics of true Golden Section spirals
    Part 4. The Myth of the Nautilus shell ABOUT
    THE AUTHORJohn Sharp has researched and taught Geometry and Art for over
    20 years in Adult Education in and around London. He is the illustrator
    of David Wells' Penguin
    Dictionary of Curious and Interesting Geometry and has written his own book on modelling
    geometrical surfaces called Sliceforms, some of which
    are in the "Strange
    Surfaces" exhibit
    in the Science Museum in London.
 
      
        | The correct citation
        for this article is: John Sharp, "Spirals and
        the Golden Section", Nexus Network Journal, vol.
        4, no. 1 (Winter 2002), http://www.nexusjournal.com/Sharp_v4n1-intro.html
 |     Copyright ©2002 Kim Williams
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