magnetic flux

简明释义

磁通量

英英释义

例句

1.The scientist measured the magnetic flux 磁通量 through a coil to determine its efficiency.

科学家测量了一个线圈中的磁通量 magnetic flux以确定其效率。

2.To calculate the magnetic flux 磁通量, you need to know the strength of the magnetic field and the area it penetrates.

要计算磁通量 magnetic flux，你需要知道磁场强度和它穿透的面积。

3.The magnetic flux 磁通量 through a surface can be visualized with magnetic field lines.

通过一个表面的磁通量 magnetic flux可以用磁场线进行可视化。

4.In electromagnetic theory, changes in magnetic flux 磁通量 can induce an electromotive force.

在电磁理论中，磁通量 magnetic flux的变化可以感应出电动势。

5.The generator produces electricity by rotating a magnet, which alters the magnetic flux 磁通量 across the coils.

发电机通过旋转磁铁来产生电力，这会改变线圈中的磁通量 magnetic flux。

作文

Magnetic fields are an essential aspect of physics that govern the behavior of charged particles. One of the fundamental concepts associated with magnetic fields is magnetic flux, which is a measure of the quantity of magnetism, considering the strength and extent of a magnetic field. Understanding magnetic flux is crucial for various applications in science and engineering, including electric motors, transformers, and magnetic storage devices.To define magnetic flux, we can say it is the total magnetic field that passes through a given area. It is represented mathematically by the equation: Φ = B × A × cos(θ)where Φ represents the magnetic flux, B is the magnetic field strength, A is the area through which the field lines pass, and θ is the angle between the magnetic field lines and the normal to the surface. This equation illustrates how magnetic flux depends on both the intensity of the magnetic field and the orientation of the area relative to the field.The unit of magnetic flux is the Weber (Wb), named after the German physicist Wilhelm Eduard Weber. A single Weber is defined as the amount of magnetic flux that, when linked with a circuit of one turn, induces an electromotive force of one volt as the flux is reduced to zero in one second. This relationship between magnetic flux and induced voltage is a cornerstone of electromagnetic induction, which is the principle behind many electrical devices.In practical terms, magnetic flux plays a significant role in the operation of transformers. A transformer consists of two coils of wire, known as the primary and secondary coils, wound around a magnetic core. When alternating current flows through the primary coil, it creates a varying magnetic flux in the core. This changing magnetic flux induces a voltage in the secondary coil according to Faraday's law of induction. The efficiency of this process is largely determined by the amount of magnetic flux that links the two coils.Moreover, magnetic flux is also pivotal in understanding the concept of magnetic field lines. These lines represent the direction and strength of the magnetic field, and the density of these lines through a given area directly correlates with the magnetic flux. A higher concentration of field lines indicates a stronger magnetic flux, while sparser lines suggest weaker flux.In conclusion, magnetic flux is a key concept in the study of electromagnetism. Its implications extend across various fields, from electrical engineering to physics. By grasping the principles surrounding magnetic flux, we can better understand how magnetic fields interact with matter and how these interactions can be harnessed for technological advancements. As we continue to explore the mysteries of magnetism, the significance of magnetic flux will undoubtedly remain a focal point in our quest for knowledge in the physical sciences.

磁场是物理学中一个重要的方面，支配着带电粒子的行为。与磁场相关的基本概念之一是磁通量，它是对磁性数量的测量，考虑到磁场的强度和范围。理解磁通量对于科学和工程中的各种应用至关重要，包括电动机、变压器和磁存储设备。定义磁通量时，可以说它是通过给定面积的总磁场。它在数学上用以下方程表示：Φ = B × A × cos(θ)其中Φ表示磁通量，B是磁场强度，A是通过场线经过的面积，θ是磁场线与表面法线之间的角度。这个方程说明了磁通量如何依赖于磁场的强度以及区域相对于场的方向。磁通量的单位是韦伯（Wb），以德国物理学家威尔赫姆·爱德华·韦伯的名字命名。一个韦伯被定义为当与一个回路连接的磁通量量，使得在一秒内将通量减少到零时诱导出一个伏特的电动势。这种磁通量与感应电压之间的关系是电磁感应的基石，这是许多电气设备背后的原理。在实际应用中，磁通量在变压器的操作中扮演着重要角色。变压器由两个绕在磁芯上的线圈组成，分别称为初级线圈和次级线圈。当交流电流流过初级线圈时，它在磁芯中产生变化的磁通量。这种变化的磁通量根据法拉第电磁感应定律在次级线圈中诱导出电压。这个过程的效率在很大程度上取决于链接这两个线圈的磁通量的数量。此外，磁通量在理解磁场线的概念时也至关重要。这些线代表磁场的方向和强度，而通过给定区域的这些线的密度直接与磁通量相关。线条越密集，表示磁通量越强，而线条稀疏则表示通量较弱。总之，磁通量是电磁学研究中的一个关键概念。它的影响延伸到各个领域，从电气工程到物理学。通过掌握围绕磁通量的原则，我们可以更好地理解磁场如何与物质相互作用，以及这些相互作用如何被利用于技术进步。在我们继续探索磁现象的奥秘时，磁通量的重要性无疑将继续成为我们在物理科学知识追求中的一个焦点。