plane wave

简明释义

平面波

英英释义

例句

1.When studying acoustics, we often model sound as a plane wave 平面波 to understand its behavior in open spaces.

在研究声学时，我们通常将声音建模为 平面波 plane wave 以理解其在开放空间中的行为。

2.In electromagnetic theory, a plane wave 平面波 represents a wave whose front is infinite in extent.

在电磁理论中，平面波 plane wave 代表一个前沿无限延伸的波。

3.The equation for a plane wave 平面波 can be derived from Maxwell's equations.

一个 平面波 plane wave 的方程可以从麦克斯韦方程组推导出来。

4.In optics, a plane wave 平面波 is often used to simplify the analysis of light propagation.

在光学中，平面波 plane wave 通常用于简化光传播的分析。

5.A plane wave 平面波 can be visualized as waves moving in parallel planes.

一个 平面波 plane wave 可以被想象为在平行平面中移动的波。

作文

In the field of physics, particularly in wave theory, the concept of a plane wave is fundamental to understanding how waves propagate through space. A plane wave is characterized by its uniform phase across any plane perpendicular to the direction of propagation. This means that at any given moment in time, all points on the wavefront are in phase with each other, leading to a coherent and predictable pattern of oscillation. The mathematical representation of a plane wave can be expressed as a function of both time and space, typically taking the form of a sinusoidal function. The significance of plane waves extends beyond theoretical physics; they play a crucial role in various practical applications, including telecommunications, acoustics, and optics. For instance, in telecommunications, signals can often be approximated as plane waves when they travel long distances in free space, allowing engineers to design efficient transmission systems. In optics, the behavior of light can also be analyzed using the principles of plane waves, especially when dealing with lasers or other coherent light sources.When discussing the properties of a plane wave, it is essential to consider its wavelength, frequency, and amplitude. The wavelength determines the distance between successive wave crests, while the frequency indicates how many cycles occur in a unit of time. The amplitude, on the other hand, refers to the maximum displacement of points on the wave from their rest position, which correlates with the intensity of the wave.One interesting aspect of plane waves is their relationship with other types of waves. For example, in real-world scenarios, waves are often not perfectly planar due to various factors such as obstacles or medium inhomogeneities. However, under certain conditions, such as far-field propagation, the wavefronts can be approximated as plane waves, simplifying analysis and calculations. This approximation is particularly useful in fields like antenna theory, where the radiation pattern of antennas can be modeled using plane waves to predict how signals will propagate.Moreover, the study of plane waves leads to insights into interference and diffraction phenomena. When two or more plane waves intersect, they can interfere constructively or destructively, resulting in patterns of increased or decreased intensity. This principle is the foundation for many optical devices, such as interferometers, which exploit these interference patterns to measure small changes in distance or refractive index.In conclusion, the concept of a plane wave is not only a theoretical construct but also a practical tool used across various scientific and engineering disciplines. Understanding plane waves allows researchers and practitioners to model and analyze wave behavior effectively, leading to advancements in technology and science. As we continue to explore the complexities of wave phenomena, the significance of plane waves remains a cornerstone of our understanding of the physical world.

在物理学领域，特别是在波动理论中，平面波的概念对于理解波如何在空间中传播是基础性的。平面波的特征是其在垂直于传播方向的任何平面上的相位均匀。这意味着在任何给定时刻，波前上的所有点都是同相的，从而导致一致且可预测的振荡模式。平面波的数学表示可以通过时间和空间的函数来表达，通常采用正弦函数的形式。平面波的重要性超越了理论物理；它们在电信、声学和光学等各种实际应用中发挥着关键作用。例如，在电信中，当信号在自由空间中长距离传播时，信号通常可以近似为平面波，这使得工程师能够设计高效的传输系统。在光学中，光的行为也可以利用平面波的原理进行分析，尤其是在处理激光或其他相干光源时。在讨论平面波的特性时，考虑其波长、频率和振幅是至关重要的。波长决定了连续波峰之间的距离，而频率则表示单位时间内发生的周期数。振幅则是指波上点从其静止位置的最大位移，这与波的强度相关。一个有趣的方面是平面波与其他类型波之间的关系。例如，在现实世界中，由于障碍物或介质不均匀等各种因素，波往往并不是完美的平面。然而，在某些条件下，例如远场传播，波前可以近似为平面波，从而简化分析和计算。这种近似在天线理论等领域特别有用，因为天线的辐射模式可以使用平面波进行建模，以预测信号的传播方式。此外，对平面波的研究还引出了干涉和衍射现象的见解。当两个或多个平面波相交时，它们可以发生建设性或破坏性干涉，导致强度增加或减少的模式。这一原理是许多光学设备（如干涉仪）的基础，这些设备利用这些干涉模式来测量微小的距离或折射率变化。总之，平面波的概念不仅是一个理论构造，也是一个在各个科学和工程学科中使用的实用工具。理解平面波使研究人员和从业者能够有效地建模和分析波行为，从而推动技术和科学的进步。随着我们继续探索波现象的复杂性，平面波的重要性仍然是我们理解物理世界的基石。