title: Critical light reflection at a plastic/glass interface and its application to foot pressure measurements.
abstract: The necessary properties of plastic materials for use in a method of foot pressure distribution measurements have been assessed, and the mechanisms in operation at an illuminated plastic to glass interface underload have been investigated. A hypothesis is given of the physical principles upon which the operation of this technique is based and it is shown that a calibrated analysis of both the static and dynamic distribution of pressure under the foot is possible by this technique.
mesh_terms: D001696:Biomechanical Phenomena; D001698:Biomedical Engineering; D001835:Body Weight; D005528:Foot / Q000502:physiology*; D005898:Glass; D006801:Humans; D008027:Light; D055095:Optics and Photonics / Q000379:methods*; D010969:Plastics; D011312:Pressure; D012031:Refractometry / Q000379:methods
chemical_list: D010969:Plastics