Problemlösung (Collector's edition)
Motifs: Potential energy, nach 2. Newton’schen Axiom, 1687; Speed work (Beschleunigungsarbeit), 2nd Newton’s Axiom, 1687; Aspirin, Felix Hoffmann, 1897; Adrenaline, Jokichi Takamine, 1901; Time dilation (Zeitdehnung), Albert Einstein, 1905. Solutions of elementary problems are expressed in formulas, which Ottmar Hörl produced in large format screen printings on aluminum, 1999. In this edition formula images printed on silver plastic cards, inserted in an aluminum card case.
See also: Edition of single formula cards