alternating magnetic field

简明释义

交变磁场

英英释义

例句

1.The principle of wireless charging is based on the use of an alternating magnetic field (交变磁场) to transfer energy.

无线充电的原理基于使用交变磁场（交变磁场）来传输能量。

2.Researchers are studying how alternating magnetic fields (交变磁场) can affect cellular processes.

研究人员正在研究交变磁场（交变磁场）如何影响细胞过程。

3.The induction cooker works by generating an alternating magnetic field (交变磁场) that heats the cookware directly.

电磁炉通过产生一个交变磁场（交变磁场）直接加热炊具。

4.In MRI machines, an alternating magnetic field (交变磁场) is used to create detailed images of the body's internal structures.

在MRI机器中，使用交变磁场（交变磁场）来创建身体内部结构的详细图像。

5.Electric generators often rely on alternating magnetic fields (交变磁场) to produce electricity efficiently.

电动发电机通常依赖于交变磁场（交变磁场）来高效地产生电力。

作文

The concept of an alternating magnetic field is fundamental in the realm of physics and engineering. This type of magnetic field is characterized by its ability to change direction and magnitude over time, typically in a sinusoidal manner. The alternating magnetic field is generated by alternating current (AC) flowing through a conductor, which creates a magnetic field that oscillates as the current changes direction. This phenomenon is not only fascinating from a theoretical perspective but also has practical applications in various technologies, including transformers, electric motors, and wireless energy transfer systems.To understand the significance of the alternating magnetic field, it is essential to explore its role in electromagnetic induction. When a conductor is placed within a changing magnetic field, an electromotive force (EMF) is induced in the conductor, leading to the generation of electric current. This principle is the basis for many electrical devices we use today. For instance, in power generation, large turbines rotate within a alternating magnetic field produced by magnets, converting mechanical energy into electrical energy.Moreover, the alternating magnetic field plays a crucial role in the operation of inductive charging systems. These systems utilize the principle of electromagnetic induction to transfer energy wirelessly between two coils. The primary coil generates an alternating magnetic field, which induces a current in the secondary coil, powering devices such as smartphones and electric vehicles without the need for physical connections. This technology is becoming increasingly popular due to its convenience and efficiency.In medical applications, the alternating magnetic field is utilized in Magnetic Resonance Imaging (MRI). MRI machines employ strong alternating magnetic fields to align the protons in the body. When these protons are exposed to radiofrequency pulses, they emit signals that are used to create detailed images of internal organs and tissues. This non-invasive imaging technique has revolutionized diagnostics in medicine, allowing for early detection and treatment of various health conditions.Furthermore, the study of alternating magnetic fields extends to the field of material science. Researchers investigate how materials respond to these fields, particularly in terms of their magnetic properties. For example, certain materials can be manipulated using alternating magnetic fields to achieve desired characteristics, such as enhanced magnetization or improved conductivity. This research is vital for developing advanced materials for electronic devices, data storage, and other applications.In conclusion, the alternating magnetic field is a pivotal concept that bridges theory and application across multiple disciplines. Its implications stretch from basic physics to cutting-edge technologies that shape our modern world. As we continue to explore and harness the potential of alternating magnetic fields, we can expect further innovations that will enhance our daily lives and propel scientific advancements. Understanding this concept is not just an academic exercise; it is a gateway to comprehending the underlying principles that govern much of our technological landscape.

交变磁场的概念在物理学和工程学领域中是基础性的。这种类型的磁场的特点是其能够随时间改变方向和大小，通常以正弦波的方式变化。交变磁场是由流经导体的交流电（AC）产生的，当电流方向改变时，产生一个振荡的磁场。这一现象不仅从理论角度来看令人着迷，而且在各种技术中具有实际应用，包括变压器、电动机和无线能量传输系统。为了理解交变磁场的重要性，有必要探讨其在电磁感应中的作用。当导体置于变化的磁场中时，导体内会感应出电动势（EMF），导致电流的产生。这个原理是我们今天使用的许多电气设备的基础。例如，在发电中，大型涡轮机在产生的交变磁场中旋转，将机械能转化为电能。此外，交变磁场在感应充电系统的运作中也发挥着至关重要的作用。这些系统利用电磁感应的原理，通过两个线圈之间无线传输能量。主线圈产生一个交变磁场，这个磁场在副线圈中感应出电流，为智能手机和电动车等设备供电，而无需物理连接。这项技术因其便利性和高效性而日益受到欢迎。在医学应用中，交变磁场被用于磁共振成像（MRI）。MRI机器利用强大的交变磁场来排列体内的质子。当这些质子暴露于射频脉冲时，它们会发出信号，这些信号用于创建内部器官和组织的详细图像。这种非侵入性的成像技术已经彻底改变了医学诊断，允许早期发现和治疗各种健康问题。此外，交变磁场的研究还扩展到材料科学领域。研究人员调查材料如何响应这些磁场，特别是在其磁性特性方面。例如，某些材料可以通过交变磁场进行操控，以实现所需的特性，例如增强的磁化或改善的导电性。这项研究对开发用于电子设备、数据存储和其他应用的先进材料至关重要。总之，交变磁场是一个关键概念，它在多个学科之间架起了理论与应用的桥梁。它的影响从基础物理学延伸到塑造我们现代世界的尖端技术。随着我们继续探索和利用交变磁场的潜力，我们可以期待进一步的创新，将增强我们的日常生活并推动科学进步。理解这一概念不仅仅是一个学术练习；它是理解支配我们技术景观大部分的基本原理的门户。