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Lichtblicke – Petrischalenexperimente in der Overhead‐Projektion
Author(s) -
Full Roland
Publication year - 1996
Publication title -
chemie in unserer zeit
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.217
H-Index - 24
eISSN - 1521-3781
pISSN - 0009-2851
DOI - 10.1002/ciuz.19960300604
Subject(s) - petri net , overhead (engineering) , petri dish , projection (relational algebra) , computer science , field (mathematics) , algorithm , mathematics , pure mathematics , biology , programming language , genetics
Overhead projection with supplementary lenses provides „wallfilling big screen” detailed pictures of physical and chemical phenomena and thus helps to train chemists to make accurate observations, comparisons, and interpretations. By using divided petri dishes, it is possible to present parallel and control experiments with minimal amounts of substances in one field of vision, and thus to establish the links between substance and reaction, and formula and equation. In particular, for the demonstration of electrochemical processes, the divided petri dish proves to be a projectable minimal system, which is characterized by maximum economy and ecology. Great recognition with little substance?.