magnetic induction

简明释义

磁感应

英英释义

例句

1.The concept of magnetic induction is essential in understanding how inductors work in circuits.

理解电路中电感器工作原理时，磁感应的概念至关重要。

2.The process of magnetic induction can be observed when a metal object is placed in a magnetic field.

当金属物体放置在磁场中时，可以观察到磁感应过程。

3.In electric motors, magnetic induction creates rotational motion that powers the device.

在电动机中，磁感应产生的旋转运动为设备提供动力。

4.The principle of magnetic induction is used in transformers to transfer electrical energy efficiently.

变压器中使用磁感应原理来高效地传输电能。

5.Scientists study magnetic induction to develop better wireless charging technologies.

科学家研究磁感应以开发更好的无线充电技术。

作文

Magnetic induction, or 磁感应, is a fundamental concept in physics that describes how a magnetic field can induce an electromotive force (EMF) in a conductor. This phenomenon occurs when a conductor, such as a wire, is placed within a changing magnetic field. The principles of 磁感应 are not only crucial for understanding basic electromagnetic theory but also play a significant role in various applications, including electric generators, transformers, and inductive charging systems.To better grasp the concept of 磁感应, it is essential to delve into the historical context and the scientific principles that underpin it. The groundwork for this phenomenon was laid by renowned physicists such as Michael Faraday and James Clerk Maxwell in the 19th century. Faraday's experiments demonstrated that a changing magnetic field could produce an electric current, leading to the formulation of Faraday's law of electromagnetic induction. This law states that the induced EMF in a closed loop is directly proportional to the rate of change of the magnetic flux through the loop.In practical terms, 磁感应 is observed in various technologies that we encounter in our daily lives. For instance, electric generators operate on the principle of 磁感应. When a coil of wire rotates within a magnetic field, it experiences a change in magnetic flux, resulting in the generation of electricity. This process is vital for producing the electrical energy that powers homes, industries, and countless devices.Another application of 磁感应 is found in transformers, which are used to transfer electrical energy between circuits. Transformers rely on the principle of 磁感应 to increase or decrease voltage levels, making electricity suitable for transmission over long distances. By using two coils of wire wrapped around a magnetic core, transformers can efficiently convert high-voltage electricity to low-voltage electricity and vice versa, minimizing energy loss during transmission.Inductive charging systems, commonly used for charging smartphones and electric vehicles, also utilize the concept of 磁感应. These systems consist of a charging pad and a receiver that work together through 磁感应. When the charging pad generates a magnetic field, the receiver captures this energy and converts it back into electrical energy to charge the device. This technology offers a convenient and efficient way to power devices without the need for physical connectors.Understanding 磁感应 is not only important for students and professionals in the field of physics and engineering but also for anyone interested in the technological advancements that shape our world. As society continues to innovate and develop new technologies, the principles of 磁感应 will remain at the forefront, driving improvements in energy efficiency and sustainability.In conclusion, 磁感应 is a crucial concept in the realm of electromagnetism that has far-reaching implications across various fields. From electric generators to transformers and inductive charging systems, the ability of a magnetic field to induce an electromotive force has transformed the way we generate and use electricity. As technology evolves, the relevance of 磁感应 will continue to grow, underscoring the importance of understanding this fundamental principle in our increasingly electrified world.

磁感应是物理学中的一个基本概念，描述了磁场如何在导体中诱导电动势（EMF）。当导体（例如电线）放置在变化的磁场中时，就会发生这种现象。磁感应的原理不仅对理解基本的电磁理论至关重要，而且在电动发电机、变压器和感应充电系统等各种应用中发挥着重要作用。为了更好地掌握磁感应的概念，有必要深入探讨其历史背景和支撑它的科学原理。19世纪，著名物理学家迈克尔·法拉第和詹姆斯·克拉克·麦克斯韦奠定了这一现象的基础。法拉第的实验表明，变化的磁场可以产生电流，从而形成了法拉第电磁感应定律。该定律指出，在一个闭合回路中，诱导电动势与通过该回路的磁通量变化率成正比。在实际应用中，我们日常生活中遇到的各种技术都观察到了磁感应。例如，电动发电机的运行原理就是基于磁感应。当一圈电线在磁场中旋转时，它会经历磁通量的变化，从而产生电力。这一过程对产生为家庭、工业和无数设备提供动力的电能至关重要。变压器是另一个应用磁感应的例子，它们用于在电路之间传输电能。变压器依赖于磁感应的原理来提高或降低电压水平，使电力适合长距离传输。通过使用缠绕在磁芯上的两圈电线，变压器可以有效地将高电压电力转换为低电压电力，反之亦然，从而在传输过程中最小化能量损失。感应充电系统（通常用于给智能手机和电动车充电）也利用了磁感应的概念。这些系统由充电垫和接收器组成，通过磁感应共同工作。当充电垫产生磁场时，接收器捕获这一能量并将其转化为电能以给设备充电。这项技术提供了一种方便高效的方式为设备供电，而无需物理连接。理解磁感应不仅对物理和工程领域的学生和专业人士重要，也对任何对塑造我们世界的技术进步感兴趣的人至关重要。随着社会不断创新和开发新技术，磁感应的原理将始终处于前沿，推动能源效率和可持续性的改善。总之，磁感应是电磁学领域一个至关重要的概念，具有广泛的影响力。无论是电动发电机、变压器还是感应充电系统，磁场诱导电动势的能力改变了我们发电和使用电力的方式。随着技术的发展，磁感应的相关性将继续增长，强调了在我们日益电气化的世界中理解这一基本原理的重要性。