New & Forthcoming
Directions & Parking
Shipping & Returns
Projective Geometry (New)
by Edwards, Lawrence
Publisher: Steiner Books
Book ID: 9780863153938, 0863153933
Usually available in 1-2 weeks
Projective geometry is a non-metrical form of geometry that emerged in the early nineteenth century. It originated from the principles of perspective art. Here, he presents a clear and artistic understanding of the intriguing qualities of projective geometry.
Projective geometry formalizes a central principle of perspective art -- that parallel lines meet at infinity and, therefore, should be drawn that way. Essentially, projective geometry may be viewed as an extension of Euclidean geometry -- one in which the "direction" of each line is subsumed within the line as an extra "point," and in which a "horizon" of directions corresponding to coplanar lines is regarded as a "line." Thus, two parallel lines will meet on a horizon because they possess the same direction.
In the spirit of projective geometry’s origins in synthetic geometry, some mathematicians have investigated projective geometry as a useful means to describe natural phenomena. The first research in this direction was stimulated by a suggestion from the philosopher and spiritual teacher Rudolf Steiner.
In the mid-twentieth century, Louis Locher-Ernst explored the tension between central forces and peripheral influences. Lawrence Edwards discovered significant applications of projective geometry (Klein path curves) to organic development. In the spirit of D'Arcy Thompson's On Growth and Form, but with greater mathematical rigor, Edwards demonstrated that forms such as the buds of leaves and flowers, pine cones, eggs, and the human heart can be described simply through the use of certain path curves. Varying a single parameter -- lambda -- transforms the interaction of what projective geometry calls "growth measures" into surprisingly accurate representations of many organic forms, which are otherwise not easily described through mathematics. Moreover, negative values of the same parameter produce inversions representing vortexes of both water and air.
Lawrence Edwards researched and taught projective geometry for more than forty years. His book will reveal the secrets of space to those who work through its more than two hundred instructive diagrams and exercises. Projective Geometry is an essential resource for teachers of Waldorf education or for those who wish to strengthen their thinking and expand their view of mathematics.
Lawrence Edwards (1911–2004) studied the work of Rudolf Steiner and, until he retired, was a Waldorf class teacher and an upper school mathematics teacher at the Edinburgh Rudolf Steiner School. He was inspired toward scientific research after studying projective geometry with George Adams and, following a "second career," researching whether the path curves he had learned about applied also to forms in nature. He confirmed this and discovered important rhythmic processes in earthly nature that correlate with celestial rhythms. He lectured widely all over the world.
The Blazing Dew of Stars
Smith, David Chaim
London: Fulgur Limited, 2013. Limited to 1001 copies only. Square landscape folio. For those who have had the joy of handling and experiencing The Sacrificial Universe
released last year, this new book will continue that fine tradition. The Blazing Dew of Stars
is a complex mystical text which speaks with many voices to introduce the practice of Kabbalistic contemplative alchemy. The volume offers glimpses of a rare view of direct application and immersion into the Real, intertwini...More
Tarot of Marseilles - Conver 1760 Restored (Standard Deck)
Jodorowsky & Camoin
Based on years of research with the goal of creating the definitive Tarot de Marseille, this deck is a labor of love that possesses fine details and the passionate workmanship of Phillipe Camoin -- last heir to the centuries-old legacy of Marseillan cardmakers -- and acclaimed artist and tarotist Alejandro Jodorowsky. Influenced most heavily by the deck of Nicolas Conver first printed in 1760, this premium deck is a treasure for readers and collectors.
Keeper of the Tarot of Marseilles Tradi...
The Sworn Book of Honorius: Liber Iuratus Honorii
Honorius of Thebes
Ibis Press / Nicolas-Hayes
As the title testifies, students were sworn to secrecy before being given access to this magic text, and only a few manuscripts have survived. Bits of its teachings, such as the use of the magic whistle for summoning spirits, are alluded to in other texts. Another key element of its ritual, the elaborate Seal of God, has been found in texts and amulets throughout Europe.
Interest in The Sworn Book of Honorius has grown in recent years, yet no modern translations have been attemptedunt...
Jailbreaking the Goddess: A Radical Revisioning of Feminist Spirituality
Allen, Lasara Firefox
Llewellyn Worldwide, Ltd.
"Jailbreaking the Goddess
is an important contribution to the writings on Goddess tradition and feminist spirituality. . . . I love her political savvy, her sensitivity around issues of diversity and cultural awareness and appropriation, and her unabashed celebration of pleasure, sensuality, and life!" -- Starhawk
Jailbreaking the Goddess is a revolutionary revisioning of the feminine divine. Where the maiden, mother, crone archetypal system is tied to female biology and physic...
Beyond the Mauve Zone. Enhanced Edition.
London: Starfire Publishing, 2016. Limited Edition. A new, enhanced edition of BEYOND THE MAUVE ZONE, fully corrected by Michael Staley using Kenneth Grant's personal copy with his annotations. The volume has also been re-set, and includes a new index that should prove most useful. A FINE CLOTH COPY in illustrated dust jacket. Custom end papers. Colored frontispiece, and twenty-four page plate section with the majority of the images being in color. 324 pages, indexed. Octavo. This is the eighth,...More