从第一性原理看机械波动量
Mechanical wave momentum from the first principles
摘要：
对于在自由均匀波导中传播的任意形式、强度和性质的稳态和某些其他类型的机械波，我们给出以下公式。轴向动量的关系式，因为它直接遵循守恒定律。与波相关的质量。波的能量和动量之间的联系。具有自平衡动量的二元波的结构，特别是在弯曲波激发时形成的横-纵波。纵向正弦波能携带动量的条件和所谓“波动量”的物理意义。
英文摘要：
For steady-state and some other types of mechanical waves of an arbitrary form, intensity and nature, propagating in a free uniform waveguide, we present the following. Relations for the axial momentum as it directly follows from the conservation laws. The mass associated with the wave. The connection between the wave energy and momentum. The structure of a binary wave which possesses a self-equilibrated momentum, in particular, a transverse-longitudinal wave formed upon excitation of flexural waves. Conditions under which longitudinal sinusoidal waves can carry momentum and the physical meaning of the so-called "wave momentum".
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