ERIC Number: EJ777843
Record Type: Journal
Publication Date: 2007-Nov
Seasonal Skin Colour Changes in a Sample Teenage Population Measured by Reflection Spectrophotometry
Stringer, M. R.; Cruse-Sawyer, J. E.
Physics Education, v42 n6 p585-591 Nov 2007
As part of a classroom-based research project, reflectance spectra from the skin of a group of teenage school students were recorded over a four-month period, from early spring to mid-summer. The relative changes in skin colour during the course of the study were quantified by integrating over the full wavelength range of the normalized reflectance spectra. Measurements made upon the inner forearm and the back of the hand produce results which indicate a decrease in total reflectance (increase in absorption) corresponding to different levels of tanning for limited and extended exposure to ambient sunlight, respectively. The rate of change of skin colour qualitatively matches that of the solar illuminance. (Contains 1 table and 6 figures.)
Descriptors: Light, Classroom Techniques, Student Research, Adolescents, Spectroscopy, Longitudinal Studies, Lighting
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Sponsor: Royal Society, London (England).
Authoring Institution: N/A