普通物理實驗創新－利用手機APP驗證馬呂士定律

Innovation of General Physics Experiment - Verification of Malus' Law by a Mobile Phone

謝怡靜(Yi-Jing Hsieh) ； 江俊明(Chun-Ming Chiang)

《物理教育學刊》 18卷2期 (2017/12) Pp. 99-106

https://doi.org/10.6212/CPE.2017.1802.07

摘要

本文主要是利用手機的APP程式，來進行普通物理實驗-驗證馬呂士定律。為瞭解光偏振的含意，可利用在光感應器及偏振片來觀測光的偏振特性，進而驗證馬呂士定律(the law of Malus)。我們透過使用手機APP免費軟體(LightMeter)替代傳統昂貴的光照度計並搭配偏振片，即時描繪出光照度與偏振片角度的變化關係圖，透過這樣便宜又簡單的實驗裝置，能使老師更為容易地傳達關於光偏振的物理知識，學生也能輕鬆的驗證馬呂士定律，並藉此培養其數值分析處理的能力。

關鍵字

APP ； 馬呂士定律 ； 偏振片

並列摘要

Free app applications are used to remodel a general physics experiment, the law of Malus. To clarify the properties of the polarized light, traditionally a light sensor and polarizers are required to demonstrate the Malus' law. Here the light sensor is replaced by a smartphone with app applications, Light Meter and Physics Toolbox Light Meter. Owing to the simple and cheap experimental setup, lectures can demonstrate the transverse nature of polarized light more easily. Students can also verify the Malus's law quantitatively based on the measured intensity of light.

並列關鍵字

APP ； Malus' law ； polarizer