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利用智慧手機測量單擺周期

Measurement of the Period of a Pendulum by Smartphone

摘要


義大利天文學家伽利略在大約1581年意外發現單擺的等時性,他以自己的脈搏量測懸掛在教堂頂的吊燈,他發現即便是吊燈擺動的幅度減弱,擺動的周期幾乎不變。在微幅擺動的情況下,單擺簡諧運動的周期只和單擺的長度有關。本論文主要介紹如何利用智慧手機,以簡單且隨時隨地可進行實驗的情況下,讓學生藉由動手做的過程,瞭解單擺實驗的物理內容。

並列摘要


The Italian astronomer Galileo Galilei discovered the isochronism of the pendulum by accident around 1581. He measured the swinging motion of a chandelier in the Pisa cathedral by his pulse. He found the swinging period not varied even the weak swinging amplitude. In weak swinging, the period of the pendulum motion is only relative to the length of the pendulum. In this paper, I will show how to do a pendulum experiment with smartphone. Students can learn the physics of the pendulum by do-it-youself experiment anytime and anywhere.

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