Animating Energy: Stop-Motion Animation and Energy Tracking Representations.
Animating Energy: Stop-Motion Animation and Energy Tracking Representations.
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能量动画：定格动画和能量跟踪表示。
DOI：
10.1119/1.4865517
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Adam Timmons
中科院分区：
文献类型：
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作者：
L. Atkins;Craig Erstad;Paul Gudeman;Jacob McGowan;Kristin Mulhern;Kaitlyn Prader;Gregoria Rodriguez;Amy Showaker;Adam Timmons
能源是一个经常被视为会计过程的话题——学生被要求计算一个数字，但这个数字本身并没有特别的意义。当我们试图给这个数字赋予意义时（例如，“做工作的能力”），我们会遇到警告和限制。正如费曼在讲授能量守恒时指出的那样，它“不是对一种机制的描述，也不是任何具体的东西；这是一个奇怪的事实，我们可以计算一些数字，当我们看完大自然的把戏，再计算一下这个数字，结果还是一样。”这些计算使我们能够推断出更有意义的量：一个物体会移动多快，它会移动多远，它会被压缩到什么程度，或者它会感觉有多热。但是能量本身，特别是在物理学入门中，很少能给物理问题提供洞见。
Energy is a topic that is often treated as an accounting process—a number that students are asked to calculate, but that is not particularly meaningful in itself. When we try to ascribe meaning to this number (“an ability to do work,” for example), we are met with caveats and hedges. As Feynman1 notes when lecturing on the conservation of energy, it “is not a description of a mechanism, or anything concrete; it is just a strange fact that we can calculate some number and when we finish watching nature go through her tricks and calculate the number again, it is the same.” These calculations allow us to infer more meaningful quantities: how fast an object will move, how far it will travel, how compressed it will become, or how hot it will feel. But energy itself, particularly in introductory physics, rarely gives insights into physical problems.