The present article is devoted to two issues. The first is the identification of lead and tin in medieval Arabic alchemy. The second is the investigation of whether Arabic alchemists differentiate between these problematic substances or not. These two issues are investigated in the light of a comparison which is made between the facts that are stated about the two problematic substances in the original Arabic alchemical works and those stated in modern chemical literature. It is proved that Arabic alchemists (...) made a sharp distinction between lead and tin. Also, it becomes clear that these two metals were used in a satisfactory purity in the era of medieval Arabic alchemy. As a consequence of the present study, some conclusions are drawn about the existence of some categories of ‘derivatives’ of fusible bodies in Arabic alchemy which are degenerate to modern categories of oxides, carbonates, etc. (shrink)

The spirits found in Arabic alchemical texts, namely zi'baq, kibrīt, nūshādir and zarnīkh are identified with their modern counterparts, which are mercury, sulfur, ammonium chloride and arsenic sulfide, respectively. Jābir's conception of spirits has been shown to be related to his practice. The puzzling experiments of Jābir on ‘mineral and organic’ spirits are compared as far as possible with modern knowledge of chemistry. These comparisons lead to an understanding of Jābir's sequence of manipulations within the logic of his alchemy. In (...) treatment of naturally occuring spirits, Jābir aimed at removing the combustibility of spirits and so improving their effect on fusible bodies. Jābir's notion of transmutation of fusible bodies is shown to be a flexible term that is equivalent to purification or reformation. (shrink)

The present article is devoted to two issues. The first is the identification of lead and tin in medieval Arabic alchemy. The second is the investigation of whether Arabic alchemists differentiate between these problematic substances or not. These two issues are investigated in the light of a comparison which is made between the facts that are stated about the two problematic substances in the original Arabic alchemical works and those stated in modern chemical literature. It is proved that Arabic alchemists (...) made a sharp distinction between lead and tin. Also, it becomes clear that these two metals were used in a satisfactory purity in the era of medieval Arabic alchemy. As a consequence of the present study, some conclusions are drawn about the existence of some categories of ‘derivatives’ of fusible bodies in Arabic alchemy which are degenerate to modern categories of oxides, carbonates, etc. (shrink)

[1] Torah ṿe-yirʼat Shamayim -- [2] Midot ṿe-hanhagot ṭovot.

In this article, the main definitions and differentiation concepts of neutrosophic fuzzy environment will be reviewed. This article will introduce an analytical methodology for solving the second-order linear ordinary differential problem with neutrosophic fuzzy boundary values, this analysis will be under generalized Hukuhara differentiability to show the analytical solutions from a different point of view for the uncertain system, some of these solutions may be decreasing in uncertainty or maybe reflecting the behavior of some real-world systems better. Some applications and (...) numeral examples will be solved to show the behavior of the solution. (shrink)

Punishment as part of modern criminal law theory -- General purposes of punishment -- General considerations of punishment -- General structure of doctrinal sentencing -- Physical punishments -- Economic punishments.

The status of pornography is commonly disputed strictly in moralistic or legalistic terms. Although these approaches are vastly significant for promulgating and instituting public policy, they ignore serious aesthetic values of pornographic productions. I argue that an aesthetic approach clearly reveals some fundamental difficulties and categorizational flaws that policy makers often make. By incorporating the methodology of aesthetic distance theories, this study addresses pornographic perception from the realm of psychical aesthetic confrontation. In making these comparisons with another type of aesthetic (...) experience, namely artworks, we find that we cannot specifically discern any clearly defined boundary which empirically determines where the experience of art ends and pornography begins. In developing and supporting theses psychical concepts, I introduce the problem of the indeterminate psychical aesthetic distance. In sum, our deliberation upon any human creation must be conscientiously investigated from every perspective that philosophical analysis has to offer; doing so will undoubtedly supplement and enrich our understanding of complex philosophical concerns. Thus, this study is an imperative prerequisite for anyone thinking about the status of pornography from any serious philosophical perspective. (shrink)