• Authors Last Name: 
    Redaktion
    Elemente der Naturwissenschaft
    2002,
    2002
    Arbeitsgruppen Pigmente für die Malerei - Phänomenologische Materiekunde Theodor Bolsinger, Chemiker, ehemals Ciba Basel Mit käuflichen, fixfertigen Malfarben zu arbeiten ist heute so zur Selbstverständlichkeit geworden, dass die Benutzer meistens Mühe haben, sich den enormen Aufwand vorzustellen, der einst z.B. im Atelier eines jan von Eyck... read more
  • Authors First Name: 
    Albert
    Authors Last Name: 
    Pröbstl
    Elemente der Naturwissenschaft
    2002,
    2002
    Optische Aktivität von Kohlenstoffverbindungen Handeln und Erkennen im Wechsel Albert Pröbstl Summary In the polarity of action and perception in chemistry the emphasis seems to be on action. Several stages in the development of the concepts of ‘Optical Activity’ and ‘Chirality’ since the 17th century show that physical experiments (... read more
  • Authors First Name: 
    Klaus-Peter
    Authors Last Name: 
    Endres
    Elemente der Naturwissenschaft
    2002,
    2002
    Biochemie und Physiologie der Farbstoffe der menschlichen Haut Klaus-Peter Endres Summary The variation in colour of the human skin is mediated by the coloured substances melanin and haemoglobin, and to a lesser degree by carotene. Spectrophotometric analysis reveals that the distribution of these three pigments within the human organism... read more
  • Authors First Name: 
    Martin
    Authors Last Name: 
    Errenst
    Elemente der Naturwissenschaft
    2002,
    2002
    Cholesterin und Glyceridfette Eine Polarität innerhalb der Lipidsubstanzen Martin Errenst Summary This paper is about the relationship of cholesterol to human physiology. Cholesterol is synthesised by the human body. On the other hand, triglyceride fats are required in our diet because our body cannot synthesise essential fatty acids.... read more
  • Authors First Name: 
    Daniel
    Authors Last Name: 
    Braun
    Elemente der Naturwissenschaft
    2002,
    2002
    Zur Biochemie der Milch von Tier und Mensch Proteine, Lipide und Kohlenhydrate der Milch in ihrem biologischen Kontext Daniel Braun Summary The article reviews and extends interspecific correlations between the main components of milk of different mammalian species and certain aspects of their biology. Proteins are correlated with... read more
  • Authors First Name: 
    Klaus
    Authors Last Name: 
    Frisch
    Elemente der Naturwissenschaft
    2002,
    2002
    Auf dem Weg zu einer natürlichen Ordnung der Pflanzensubstanzen Klaus Frisch Introduction Towards the end of his life Goethe expressed the hope that one day it would be possible to understand the chemical processes of a plant in a way just as satisfying as the one he had achieved at the morphological level (Kuhn 1988). In retrospect, one... read more
  • Authors First Name: 
    Peter
    Authors Last Name: 
    Janich
    Elemente der Naturwissenschaft
    2002,
    2002
    Die Rationalität der Chemie Peter Janich Summary Despite the very important role of chemistry in technology, civilisation and shaping our view of the world it has been neglected by philosophy and the humanities. For several reasons, it cannot be regarded as an appendix to physics and treated as such in the theory of science. Several... read more
  • Authors First Name: 
    Oliver
    Authors Last Name: 
    Conradt
    Elemente der Naturwissenschaft
    75,
    2001
    ELEMENTE DER NATURWISSENSCHAFT 75 2/2001 Der Begriff des Gegenraumes Oliver Conradt Summary The concept of counter space or negative space is developed from Goethe’s concept of space as described by the young Rudolf Steiner. Whilst the three dimensions of space are based on the relation between two separated objects, the three... read more
  • Authors First Name: 
    Johannes
    Authors Last Name: 
    Grebe
    Elemente der Naturwissenschaft
    75,
    2001
    ELEMENTE DER NATURWISSENSCHAFT 75 2/2001 Doppeldrehung und Polarisation Johannes Grebe Gestalt wirkt auf Gestalt.I Rudolf Steiner Summary Based on a discovery of Haidinger, cyclic sequences of images as a result of an interplay of the optical elements analyser, transformer and polarizer are investigated. The change of the image... read more
  • Authors First Name: 
    Wolf-Christian
    Authors Last Name: 
    Dullo
    Elemente der Naturwissenschaft
    75,
    2001
    ELEMENTE DER NATURWISSENSCHAFT 75 2/2001 Der blaue Planet Erdgeschichtliche Betrachtungen über das Weltmeer Wolf-Christian Dullo Summary Understanding the Earth as a self-contained organism is fundamental to a Goethean approach. But how can we develop a concrete picture of it based on sensorial experience? An autonomous organism is... read more

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