用于测定重力加速度的声波重力仪：本科生实验室实验

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-14 DOI:10.1177/03064190241261058

Eduardo Bernal, Daniel Martínez-Gutiérrez, Benjamin Valera, Salvador Sánchez, David Posadas, Gabriel Ascanio

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引用次数: 0

摘要

本文介绍重力加速度的测量方法，作为本科生物理实验的一部分。重力加速度（g）通常是通过简单钟摆或自由落体来测量物体的运动时间。然而，使用机械或电子计时器以及其他装置可能会产生实验误差。目前已开发出一种用于确定此类参数的原型。其工作原理基于两个物体自由落体时的匀加速直线运动。所提出的原型可以记录两个物体（钢球）落在固体表面时产生的撞击声。使用 MATLAB 对声音产生的信号进行分析。在绘制信号图时，学生可以观察到每个钢球第一次撞击金属表面时产生的两个峰值。知道了高度和采样时间，学生就可以通过实验计算出重力加速度。使用所述装置获得的结果已与理论结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sonic gravimeter for determining the acceleration of gravity: A laboratory experiment for undergraduate students

This paper deals with the measurement of the acceleration of gravity as part of an Experimental Physics Laboratory experiment for undergraduate students. The acceleration of gravity (g) has been commonly determined measuring the travel time of a body by means of a simple pendulum or objects in free fall. However, the use of mechanical or electronic chronometers as well as other devices may generate experimental errors. A prototype for determining such a parameter has been developed. Its operating principle is based on the uniformly accelerated rectilinear motion through the free fall of two bodies. The proposed prototype allows recording the sound caused by the impact of two bodies (steel balls) when falling on a solid surface. The analysis of the signal produced by the sound is made using MATLAB. When graphing the signal, the student can observe two peaks generated by the sound of the impact of each ball when impacting the metal surface for the first time. Knowing the height and sample time, the student can calculate the acceleration of gravity experimentally. Results obtained with the device described have been compared with the theoretical ones.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.