npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041


Research Paper

New Physics: Sae Mulli 2002; 45: 334-337

Published online December 1, 2002

Copyright © New Physics: Sae Mulli.

Scattering of Linearly Polarized Light due to Aqueous Colloidal Solutions

콜로이드 수용액에 의한 선편광 산란 실험과 실험 결과의 물리 교육적 의미

Bo-young PARK, Hack-Soo KIM and Young-Min KIM

Department of Physics Education, Pusan National University, Pusan 609-735


This research investigated the scattering of linearly polarized light due to colloidal particles suspended in water. The colloidal solution was milk, and the light detector was a video camera. The layout of the components used in the experiment was as follows: The milk solution was contained in a glass beaker that was covered, except for the mouth of the beaker, by a piece of black, hard paper with a small window in it. The linearly polarized light was directed toward the mouth of the beaker, and the scattered light was detected in a direction perpendicular to the direction of the incident light. The results agreed satisfactorily with the Rayleigh scattering formula, which predicted the maximum and the minimum scattering directions. Based on our results, we suggest that this experiment may be used in high-school physics laboratories or in college introductory physics laboratories to con rm that light is a transverse wave.

Keywords: Linearly polarized light, Scattering, Intensity of scattered light, Experiment in high school

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