magnetic flux

简明释义

磁通量

英英释义

例句

1.The amount of magnetic flux in the coil determines how much current is induced when the magnetic field changes.

线圈中的磁通量决定了当磁场变化时感应出的电流多少。

2.The unit of magnetic flux is the Weber, which measures the total magnetic field passing through a surface.

磁通量的单位是韦伯，它测量通过一个表面的总磁场。

3.A change in magnetic flux can induce a voltage in a nearby conductor.

在附近导体中，磁通量的变化可以感应出电压。

4.Engineers must calculate the magnetic flux to design efficient transformers.

工程师必须计算磁通量以设计高效的变压器。

5.In magnetic resonance imaging (MRI), magnetic flux plays a crucial role in producing clear images.

在磁共振成像（MRI）中，磁通量在生成清晰图像中起着至关重要的作用。

作文

Magnetic fields are an essential part of our understanding of physics and engineering. One fundamental concept in this domain is magnetic flux, which refers to the total magnetic field that passes through a given area. To grasp this concept better, we must first understand what a magnetic field is. A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. The strength and direction of a magnetic field can vary from one point to another, making it crucial for various applications in technology and science.The concept of magnetic flux is mathematically defined as the product of the magnetic field strength and the area through which the field lines pass, taking into account the angle at which the field intersects the area. This relationship is expressed in the equation: Magnetic Flux (Φ) = B × A × cos(θ),where Φ is the magnetic flux, B is the magnetic field strength, A is the area, and θ is the angle between the magnetic field lines and the normal (perpendicular) to the surface area. Understanding this formula allows us to calculate how much magnetic field penetrates a given area, which is critical in many applications, such as in electrical engineering and electromagnetic theory.One practical example of magnetic flux is found in electric generators. In these devices, a coil of wire rotates within a magnetic field, causing a change in magnetic flux through the coil. According to Faraday's law of electromagnetic induction, this change in magnetic flux induces an electromotive force (EMF) in the coil, generating electricity. Hence, the efficiency of power generation relies heavily on the manipulation of magnetic flux.Moreover, magnetic flux plays a critical role in transformers, which are used to increase or decrease voltage levels in electrical circuits. By altering the magnetic flux in the primary coil, transformers can induce a corresponding magnetic flux in the secondary coil, allowing for efficient energy transfer between circuits.In addition to its practical applications, magnetic flux also has profound implications in various scientific fields, including astrophysics. For instance, the study of magnetic flux in stars helps scientists understand their behavior and lifecycle. The Sun's magnetic field influences solar winds and space weather, which can have significant effects on Earth’s magnetosphere.Understanding magnetic flux is not only vital for engineers and physicists but also for anyone interested in the principles that govern our technological world. As we continue to explore the intricacies of magnetism, the importance of magnetic flux will undoubtedly grow, leading to more innovative solutions and deeper insights into the universe around us.In conclusion, magnetic flux is a fundamental concept that connects various domains of science and technology. Its definition, calculation, and applications illustrate the significance of magnetism in our daily lives and in the advancement of modern technology. By mastering the concept of magnetic flux, we can better appreciate the complexities of the physical world and harness its principles for further exploration and innovation.

磁场是我们理解物理学和工程学的重要组成部分。在这个领域中，一个基本概念是磁通量，它指的是通过给定区域的总磁场。要更好地掌握这个概念，我们首先必须了解什么是磁场。磁场是一个矢量场，描述了对移动电荷、电流和磁性材料的磁性影响。磁场的强度和方向可能在不同的点上有所不同，这使得它在技术和科学的各种应用中至关重要。磁通量的概念在数学上被定义为磁场强度与穿过该区域的面积的乘积，同时考虑到磁场与面积法线（垂直于表面）的交角。这个关系用公式表示：磁通量 (Φ) = B × A × cos(θ)，其中Φ是磁通量，B是磁场强度，A是面积，θ是磁场线与表面法线之间的角度。理解这个公式使我们能够计算出多少磁场穿透给定的面积，这在许多应用中至关重要，例如在电气工程和电磁理论中。磁通量的一个实际例子可以在发电机中找到。在这些设备中，一根线圈在磁场中旋转，导致线圈内的磁通量发生变化。根据法拉第电磁感应定律，这种磁通量的变化在线圈中感应出电动势（EMF），从而产生电力。因此，发电的效率在很大程度上依赖于磁通量的操控。此外，磁通量在变压器中也起着关键作用，变压器用于在电路中升高或降低电压水平。通过改变初级线圈中的磁通量，变压器可以在次级线圈中感应出相应的磁通量，实现电路间的高效能量传输。除了其实际应用，磁通量在各个科学领域也有深远的影响，包括天体物理学。例如，研究恒星中的磁通量帮助科学家理解它们的行为和生命周期。太阳的磁场影响太阳风和空间天气，这可能对地球的磁层产生重大影响。理解磁通量不仅对工程师和物理学家至关重要，也对任何对支配我们技术世界的原理感兴趣的人来说至关重要。随着我们继续探索磁性的复杂性，磁通量的重要性无疑会增加，导致更具创新性的解决方案和对我们周围宇宙的更深刻的洞察。总之，磁通量是一个基本概念，连接了科学和技术的各个领域。它的定义、计算和应用说明了磁性在我们日常生活和现代技术进步中的重要性。通过掌握磁通量的概念，我们可以更好地欣赏物理世界的复杂性，并利用其原理进行进一步的探索和创新。