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CHEMISTRY
EDUCATION:
RESEARCH AND PRACTICE
2003, Vol. 4, No. 1, pp. 55-66
SPECIAL SECTION: 6th ECRICE / 2nd ECCE |
THE
PRACTICE OF
CHEMISTRY EDUCATION (PAPER)
Science, Technology, Environment,
and Society (STES)
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Dimitrios
STAMOVLASIS
Department of Chemistry, University of Ioannina
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TEACHING
PHOTOGRAPHY:
INTERPLAY BETWEEN CHEMICAL KINETICS AND VISUAL ART
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ABSTRACT:
This paper proposes photography experiments, which appeals to interdisciplinary
teaching, where an effort is made to reveal the interactive relationships
among two different fields, science and art.
Such teaching can follow an interplay between chemistry and visual art
establishing a relation between the appearance of a photographic image
and the rate of a chemical reaction. The appearance of a photographic
image is related to its contrast, which actually expresses the number
of gray tones existing between absolute black and absolute white, and
the chemical reaction is the reduction of silver halide to metallic
silver.
This interplay involves the two levels of representing matter: the microscopic
and the macroscopic level. The macroscopic level that concerns visual
art can be understood in relation to a chemical kinetic effect at microscopic
level. Teaching photography within an Art Science frame provides the
context for introducing chemical kinetics and studying the factors affecting
the rate of a reaction. [Chem. Educ. Res. Pract.: 2003, 4, 55-66]
KEY
WORDS: chemical kinetics; photographic chemistry; silver halide
reduction; photography; characteristic curve of negative film; contrast
of an image; visual art
CORRESPONDENCE:
Dimitrios STAMOVLASIS, University of Ioannina, Department of Chemistry,
GR-451 10 Ioannina, Greece; fax: +30 2 651 0 98798; e-mail: stadi@cc.uoi.gr
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