half wave length

简明释义

半波长

英英释义

例句

1.In a resonant cavity, the distance between two consecutive nodes is equal to one half wave length (半波长).

在共振腔中，两个连续节点之间的距离等于一个半波长。

2.The formula for calculating the half wave length (半波长) of light in a medium involves the speed of light and the refractive index.

计算介质中光的半波长的公式涉及光速和折射率。

3.The half wave length (半波长) of a sound wave determines its pitch.

声音波的半波长决定了它的音高。

4.In radio transmission, antennas are often designed to be a half wave length (半波长) long for optimal performance.

在无线电传输中，天线通常设计为半波长长，以获得最佳性能。

5.To create a standing wave, the string must vibrate at a half wave length (半波长) of the fundamental frequency.

为了产生驻波，弦必须以基频的半波长振动。

作文

Understanding the concept of half wave length is crucial in various fields of science and engineering, particularly in the study of wave phenomena. A half wave length refers to the distance over which a wave's shape repeats itself, specifically half of the complete cycle of a periodic wave. This concept is not only applicable to sound waves but also electromagnetic waves, such as light and radio waves. In physics, waves can be described by their wavelength, frequency, and amplitude. The wavelength is the distance between successive crests or troughs of a wave. When we talk about a half wave length, we are essentially discussing the distance from one crest to the next crest, divided by two. For instance, if a wave has a wavelength of 10 meters, then its half wave length would be 5 meters. This measurement is significant because it helps in understanding how waves interact with each other and with different mediums.One practical application of the half wave length can be found in radio transmission. Antennas are often designed based on the principle of half wave length to ensure optimal performance. For example, a dipole antenna, which is commonly used in radio communications, is typically designed to be one half wave length long at the frequency of operation. This design allows the antenna to efficiently radiate electromagnetic waves, maximizing the transmission and reception of signals.Moreover, the concept of half wave length also plays a vital role in the field of acoustics. Musical instruments, for instance, produce sound waves that can be analyzed using this principle. The length of a vibrating string or air column in an instrument corresponds to specific wavelengths, and understanding these relationships helps musicians tune their instruments correctly. A string that is one half wave length long will produce a fundamental frequency, while additional harmonics can be produced by creating segments of half wave length divisions along the string.In addition to practical applications, the half wave length concept also serves as a foundation for more advanced topics in physics, such as quantum mechanics and optics. In quantum physics, particles exhibit wave-like behavior, and their properties can be analyzed using wave functions that often involve half wave length calculations. Similarly, in optics, the interference patterns created by light waves can be understood through the principles of half wave length and full wave lengths. In conclusion, the concept of half wave length is not just a theoretical idea but rather a fundamental principle that permeates various scientific disciplines. Whether it is in designing efficient antennas, tuning musical instruments, or exploring the quantum realm, understanding half wave length enhances our comprehension of wave behavior and its applications. As we continue to explore the complexities of waves, the significance of half wave length will undoubtedly remain a cornerstone in the study of physics and engineering.

理解半波长的概念对于科学和工程的各个领域至关重要，尤其是在波动现象的研究中。半波长是指波的形状重复的距离，特别是周期波完整周期的一半。这个概念不仅适用于声波，还适用于电磁波，如光波和无线电波。在物理学中，波可以通过其波长、频率和振幅来描述。波长是波的连续波峰或波谷之间的距离。当我们谈论半波长时，我们实际上是在讨论从一个波峰到下一个波峰的距离除以二。例如，如果一条波的波长为10米，则其半波长为5米。这个测量是重要的，因为它有助于理解波如何相互作用以及与不同介质的相互作用。半波长的一个实际应用可以在无线电传输中找到。天线通常基于半波长的原理进行设计，以确保最佳性能。例如，偶极天线，广泛用于无线电通信，通常设计为在工作频率上长一个半波长。这种设计使天线能够有效地辐射电磁波，从而最大化信号的传输和接收。此外，半波长的概念在声学领域也发挥着重要作用。例如，乐器产生的声波可以通过这一原理进行分析。乐器中振动弦或气柱的长度对应于特定的波长，理解这些关系有助于音乐家正确调音。长度为一个半波长的弦将产生基本频率，而通过在弦上创建半波长的分段，可以产生额外的谐波。除了实际应用之外，半波长的概念还为物理学中的更高级主题提供了基础，例如量子力学和光学。在量子物理中，粒子表现出波动性，其特性可以通过波函数进行分析，而这些波函数通常涉及半波长计算。同样，在光学中，光波所产生的干涉图样可以通过半波长和全波长的原理来理解。总之，半波长的概念不仅仅是一个理论概念，而是渗透到各种科学学科中的基本原理。无论是在设计高效天线、调音乐器，还是探索量子领域，理解半波长都增强了我们对波动行为及其应用的理解。随着我们继续探索波的复杂性，半波长的重要性无疑将继续成为物理和工程研究中的基石。