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The broad objective of this paper is to study the surface of the corroded metals by using proximity sensor which works on the principle of light scattering by objects. The present work discussed a simple low cost sensor design making use of plastic optical fiber. The sensor used is insensitive to source fluctuation and can detect surface roughness of the metals. The average surface roughness of the samples in different concentrations of acidic medium has been studied using the sensor. The reflected light intensity from the surface of sample metals was collected and measured as a function of lateral distance to estimate the roughness of the surface. The results have been compared with the stylus measurements.

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This paper describes the work of some SPIE student chapter members to create interest in students on optics by teaching students in upper primary schools in and around college premises on fundamental concepts of light such as reflection, refraction, diffraction, etc. This paper discusses about how the outcome based education (OBE) is helpful in learning optics interesting rather than the traditional way of learning. In order to achieve this, students are divided into groups and conducted a workshop. Student learning outcomes were assessed at the end of the program. The program is useful to us to improve our understanding of how students learn light-related principles and provide evidence of the learning outcomes on the subject. Our research established that students in every classroom learned optics concepts, uncovered student ideas about optics, and identified ways to support and supplement the curriculum for use in classrooms.