学生对量子力学与经典力学中实验测量不确定性来源的推理

Emily M. Stump, C. White, G. Passante, N. Holmes
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引用次数: 7

摘要

测量不确定度和实验误差是本科物理实验室教学的重要概念。虽然学生对经典力学入门实验室实验中误差和不确定性的想法已经被广泛研究,但对量子力学中学生对实验测量不确定性的思考的研究相对有限。在这项工作中,我们使用半结构化访谈来研究高级物理学生对量子力学和经典力学两个常见本科生实验室实验中虚构数据分布的解释。为了分析这些解释,我们开发了一个编码方案,根据学生认为产生不确定性的因素对他们的回答进行分类,并区分不同类型的不确定性(例如不精确、不准确)。我们发现,在我们的研究中,参与者对测量不确定性表达了各种各样的想法,这些想法随着上下文(经典/量子)和不确定性的类型而变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Student reasoning about sources of experimental measurement uncertainty in quantum versus classical mechanics
Measurement uncertainty and experimental error are important concepts taught in undergraduate physics laboratories. Although student ideas about error and uncertainty in introductory classical mechanics lab experiments have been studied extensively, there is relatively limited research on student thinking about experimental measurement uncertainty in quantum mechanics. In this work, we used semi-structured interviews to study advanced physics students' interpretations of fictitious data distributions from two common undergraduate laboratory experiments in quantum mechanics and one in classical mechanics. To analyze these interpretations, we developed a coding scheme that classifies student responses based on what factors they believe create uncertainty and differentiates between different types of uncertainty (e.g. imprecision, inaccuracy). We found that participants in our study expressed a variety of ideas about measurement uncertainty that varied with the context (classical/quantum) and the type of uncertainty.
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