Publication: Demonstration of light absorption and light scattering using smartphones
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
319120
Other identifier(s)
2-s2.0-85081675710
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Physics Education. Vol 55, No.1 (2020)
Suggested Citation
Malisorn K., Wicharn S., Plaipichit S., Pipatpanukul C., Houngkamhang N., Puttharugsa C. Demonstration of light absorption and light scattering using smartphones. Physics Education. Vol 55, No.1 (2020). doi:10.1088/1361-6552/ab51ea Retrieved from: https://hdl.handle.net/20.500.14740/4851
Abstract
This paper demonstrates the use of smartphones in an experiment of light absorption and light scattering. The LED display and camera of the smartphone are used as the light source and as the detector, respectively. The color wheel is used to choose the color of the light source to be shone through the sample for analysis. The detector directly measures the intensity of the light that passes through the sample to study light absorption according to the Beer-Lambert law. On the other hand, to investigate the light scattering, the detector orthogonally measures the intensity of the scattered light from the sample. The results of the light absorption correspond to the Beer-Lambert law. The scattered light from the sample is be measured by a smartphone. The experiment is easy to set up, without the need for any further expensive apparatus. We expect that this experiment will be useful for physics teachers to demonstrate light absorption and light scattering in the classroom or in a physics laboratory. © 2019 IOP Publishing Ltd.