| 论一维机械波的能量密度 |
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| 引用本文： | 马廷钧.论一维机械波的能量密度[J].北京工商大学学报(自然科学版),1988(2). |
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| 作者姓名： | 马廷钧 |
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| 作者单位： | 北京轻工业学院物理教研室 |
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| 摘 要： | 本文讨论了一维小振幅机械波的能量密度,包括动能密度和势能密度。从两个不同的角度进行了关于势能密度的推导,得到的动能密度、势能密度两个表达式比一般物理教材的处理具有更普遍的意义,同时还论证了一维小振幅机械波动能密度与势能密度之间的关系。
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| 关 键 词： | 机械波 动能密度 势能密度 |
0N THE ENERHY DENSITYASSOCIATED WITH A ONE-DIMENSIONALMECHANICAL WAVE |
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| Ma Tingjun Beijing Institute of Light Industry.0N THE ENERHY DENSITYASSOCIATED WITH A ONE-DIMENSIONALMECHANICAL WAVE[J].Journal of Beijing Technology and Business University:Natural Science Edition,1988(2). |
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| Authors: | Ma Tingjun Beijing Institute of Light Industry |
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| Institution: | Ma Tingjun Beijing Institute of Light Industry |
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| Abstract: | The energy density associated with a one-dimensional, small amplitude me-
chanical wave is discussed. It includes kinetic energy density and potential energy
density. The expression of the potential energy density is derived from two diffe-
rent aspects. Both the two expressions of energy density are more general than the
treatments which appear in common physics textbooks. Besides, the relation betw-
een the two expressions of energy density is proved. |
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| Keywords: | mechanical wave kinetic energy density potential energy density |
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