electromagnetic induction

简明释义

电磁感应

英英释义

例句

1.In transformers, electromagnetic induction allows for the efficient transfer of electrical energy between circuits.

在变压器中，电磁感应使电能在电路之间高效转移。

2.Many modern technologies, such as wireless charging, rely on electromagnetic induction to transfer power.

现代许多技术，如无线充电，依赖于电磁感应来传输电力。

3.The phenomenon of electromagnetic induction can be observed when a magnet is moved through a coil of wire.

当磁铁穿过一圈导线时，可以观察到电磁感应现象。

4.The concept of electromagnetic induction was first discovered by Michael Faraday in the 19th century.

19世纪，迈克尔·法拉第首次发现了电磁感应的概念。

5.The principle of electromagnetic induction is used in electric generators to convert mechanical energy into electrical energy.

电动机利用电磁感应原理将机械能转换为电能。

作文

Electromagnetic induction is a fundamental principle in physics that describes the process by which an electric current is generated in a conductor when it is exposed to a changing magnetic field. This phenomenon was first discovered by Michael Faraday in the early 19th century and has since become a cornerstone of modern electrical engineering. The concept of electromagnetic induction (电磁感应) is crucial for understanding how many electrical devices function, including generators, transformers, and inductors.To grasp the significance of electromagnetic induction (电磁感应), one must consider its applications in everyday life. For instance, when you ride a bicycle equipped with a dynamo, the rotation of the wheels generates a changing magnetic field that induces an electric current, powering the bike's lights. Similarly, power plants utilize electromagnetic induction (电磁感应) to convert mechanical energy into electrical energy. In these facilities, turbines are rotated by steam, water, or wind, creating a magnetic field that induces electricity in coils of wire.The mathematical foundation of electromagnetic induction (电磁感应) is described by Faraday's Law, which states that the induced electromotive force (EMF) in any closed circuit is directly proportional to the rate of change of the magnetic flux through the circuit. This law not only quantifies the effect but also provides a framework for predicting how changes in magnetic fields will influence electrical currents.An important aspect of electromagnetic induction (电磁感应) is Lenz's Law, which states that the direction of the induced current will always oppose the change in magnetic flux that produced it. This principle ensures that energy is conserved in electromagnetic systems and can be observed in various applications, such as in magnetic braking systems used in trains and roller coasters.In addition to its practical applications, electromagnetic induction (电磁感应) also plays a significant role in scientific research. For example, researchers use this principle in particle accelerators to manipulate charged particles and in magnetic resonance imaging (MRI) machines to create detailed images of the human body. The versatility of electromagnetic induction (电磁感应) showcases its importance across multiple fields, from engineering to medicine.As technology continues to advance, the relevance of electromagnetic induction (电磁感应) remains strong. Innovations in renewable energy sources, such as wind and solar power, often rely on this principle to convert natural energy into usable electricity. Understanding electromagnetic induction (电磁感应) is essential for engineers and scientists who are working to develop more efficient energy systems and sustainable technologies.In conclusion, electromagnetic induction (电磁感应) is not just a theoretical concept but a practical principle that underpins much of our modern electrical infrastructure. From everyday devices to complex industrial systems, the principles of electromagnetic induction (电磁感应) are integral to the functioning of numerous technologies. As we continue to explore and innovate, the understanding of this phenomenon will undoubtedly lead to new discoveries and advancements in various fields.