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A Brief History of Drugs: From the Stone Age to the Stoned Age' by Antonio Escohotado. Religion and Psychoactive Sacraments: An Entheogen Chrestomathy Thomas B.

Roberts, Ph.D. and Paula Jo Hruby, Ed.D.Author Index | Title Index A Brief History of Drugs: From the Stone Age to the Stoned Age Escohotado, Antonio. (1999). Rochester, VT: Park Street Press. Description: paperback, viii + 168 pages. Contents: Preface, introduction, 18 chapters, index. Note: Translated by Kenneth A. Excerpt(s): In 1989 as I was finishing a long investigation on this sub-ject-which in the end filled three volumes in small print with narrow margins-it seemed that the probable future of that book was to rest in the bookcases of different university libraries, a summary of suggestions to students as to how to consider the effect of this or that drug in the evolution of medicine, morals, religion, economics, and the mechanisms of political control. Initiation was prohibited only to murderers. This turn of events required erasing any point of compari-son, any communion not based on autosuggestion. ...

Phi. Use as a symbol The lower-case letter φ (or often its variant, ϕ) is often used to represent the following: The upper-case letter Φ is used as a symbol for: The golden ratio conjugate −0.618... in mathematics.The magnetic flux and electric flux in physics, with subscripts distinguishing the two.The cumulative distribution function of the normal distribution in mathematics and statistics.In philosophy, Φ is often used as shorthand for a generic act.

(Also in lower-case.) [citation needed]The number of phases in a power system in electrical engineering, for example 1Φ for single phase, 3Φ for three phase.A common symbol for the parametrization of a surface in vector calculus.In Lacanian algebra, Φ stands for the imaginary phallus and also represents phallic signification; -Φ stands in for castration.[3] The diameter symbol in engineering, ⌀, is often incorrectly[citation needed] referred to as "phi". Computing In Unicode, there are multiple forms of the phi letter: at U+03D5.[4] ), \phi ( The Vitruvian Man. "We know very little about Leonardo’s apprenticeship in Verroccio’s workshop, but the short account provided by Vasari confirms that it included architectural and technological design, according to a concept that was being revived on the model of Vitruvius, as reproposed by Alberti" (Pedretti 14).

Having had access to Alberti’s and Vitruvius’ treatises, it is no surprise that Leonardo produced his own version of the Vitruvian man in his notebooks. This rendering of the Vitruvian Man, completed in 1490, is fundamentally different than others in two ways: The circle and square image overlaid on top of each other to form one image. A key adjustment was made that others had not done and thus were forced to make disproportionate appendages: This image provides the perfect example of Leonardo's keen interest in proportion. In addition, this picture represents a cornerstone of Leonardo's attempts to relate man to nature. Top. Logarithmic spiral. A logarithmic spiral, equiangular spiral or growth spiral is a self-similar spiral curve which often appears in nature.

The logarithmic spiral was first described by Descartes and later extensively investigated by Jacob Bernoulli, who called it Spira mirabilis, "the marvelous spiral". Definition[edit] In polar coordinates the logarithmic curve can be written as[1] or with being the base of natural logarithms, and and being arbitrary positive real constants. In parametric form, the curve is with real numbers The spiral has the property that the angle between the tangent and radial line at the point is constant. SacredGeometry Photo Album - tribe.net. Tribes » Religion & Beliefs » SacredGeometry » photos Subscribe to this album Advertisement Recent topics in "SacredGeometry" ^ top of page | view all topics | back to SacredGeometry » home | about | why join?