Optics undergraduate experiments using smart (and not so smart) phones

Díaz-Melián, V. L.; Rodríguez, Laura A.; Pedroso-Camejo, F.; Mieres, J.; Armas, Y. de; Batista-Leyva, A. J.; Altshuler, E.

doi:10.48550/arxiv.1811.09546

Cited by 1 publication

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“…However, there are a few papers that use smartphones to study the topic of light. Most of them use the ambient light sensor to measure the intensity of light for the study of the inverse-square law, Brewster's angle, diffraction pattern, and Malus's law [5][6][7][8][9]. Moreover, the properties of light, especially in absorption, transmission, and scattering, are important topics taught in the physics curriculum at the undergraduate and high school levels.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of light absorption and light scattering using smartphones

Malisorn¹,

Wicharn²,

Plaipichit³

et al. 2019

Phys. Educ.

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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.

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