magnetic moment

简明释义

磁矩

英英释义

例句

1.In physics, the magnetic moment 磁矩 of an electron is a fundamental property that affects its behavior in magnetic fields.

在物理学中，电子的磁矩是影响其在磁场中行为的基本属性。

2.In quantum mechanics, the magnetic moment 磁矩 of particles plays a significant role in spin interactions.

在量子力学中，粒子的磁矩在自旋相互作用中起着重要作用。

3.The concept of magnetic moment is crucial in understanding how materials respond to magnetic fields.

磁矩的概念对于理解材料如何对磁场作出反应至关重要。

4.Scientists measure the magnetic moment 磁矩 of various substances to determine their magnetic properties.

科学家测量各种物质的磁矩以确定它们的磁性特性。

5.The magnetic moment 磁矩 of a bar magnet can be calculated using its size and the strength of its magnetic field.

条形磁铁的磁矩可以通过其大小和磁场强度来计算。

作文

The concept of magnetic moment plays a pivotal role in the field of physics, particularly in understanding magnetic properties of materials. In simple terms, the magnetic moment refers to the strength and orientation of a magnet or a current-carrying coil's magnetic field. This concept is crucial for various applications, including electric motors, transformers, and data storage devices. To grasp the importance of magnetic moment, one must first understand that it arises from the motion of electric charges. For instance, when electrons move through a conductor, they generate a magnetic field; this is where the magnetic moment comes into play. The more electrons that are in motion, or the faster they move, the stronger the magnetic moment becomes. In addition to electric currents, intrinsic properties of materials also contribute to their magnetic moment. Different materials exhibit different behaviors in the presence of a magnetic field, which can be categorized as diamagnetic, paramagnetic, or ferromagnetic. Diamagnetic materials, such as copper and bismuth, have a very weak response to magnetic fields and do not retain any magnetism once the external field is removed. On the other hand, paramagnetic materials like aluminum are attracted by magnetic fields but do not retain magnetization. Ferromagnetic materials, such as iron and nickel, display a strong magnetic moment and can retain their magnetization even after the external magnetic field is removed. The magnetic moment is not only significant in theoretical physics but also has practical implications in technology. For instance, in magnetic resonance imaging (MRI), the magnetic moment of hydrogen nuclei in the body is manipulated to create detailed images of soft tissues. Similarly, in data storage devices like hard drives, the magnetic moment of tiny magnetic domains is used to represent binary data. Moreover, the magnetic moment is essential in quantum mechanics, where it helps explain phenomena at atomic and subatomic levels. For example, the spin of electrons contributes to their magnetic moment, leading to important discoveries in quantum physics and materials science. Understanding the magnetic moment is key to unlocking new technologies and enhancing existing ones. In conclusion, the magnetic moment is a fundamental concept that bridges various branches of physics and engineering. Its implications stretch from the microscopic realm of particles to the macroscopic world of everyday technology. By studying the magnetic moment, scientists and engineers can innovate and improve devices that play critical roles in our lives, from medical imaging to data storage solutions. As we continue to explore the mysteries of magnetism, the magnetic moment will undoubtedly remain a cornerstone of research and application in the scientific community.

“磁矩”的概念在物理学领域中扮演着关键角色，特别是在理解材料的磁性方面。简单来说，磁矩指的是一个磁体或电流线圈的磁场的强度和方向。这个概念对于各种应用至关重要，包括电动机、变压器和数据存储设备。要理解磁矩的重要性，首先必须明白它源于电荷的运动。例如，当电子在导体中移动时，它们会产生一个磁场；这就是磁矩发挥作用的地方。运动中的电子越多，或者它们的运动越快，磁矩就越强。除了电流，材料的内在特性也会影响它们的磁矩。不同的材料在磁场中表现出不同的行为，这可以分为反磁性、顺磁性或铁磁性。反磁性材料，如铜和铋，对磁场的反应非常微弱，并且在外部磁场移除后不会保持任何磁性。另一方面，像铝这样的顺磁性材料会被磁场吸引，但不会保持磁化。铁磁性材料，如铁和镍，显示出强烈的磁矩，即使在外部磁场移除后也能保持其磁化。磁矩不仅在理论物理中具有重要意义，而且在技术上也有实用的影响。例如，在磁共振成像（MRI）中，体内氢核的磁矩被操控以创建软组织的详细图像。同样，在硬盘等数据存储设备中，微小磁域的磁矩用于表示二进制数据。此外，磁矩在量子力学中也是必不可少的，它有助于解释原子和亚原子层面的现象。例如，电子的自旋会影响它们的磁矩，导致在量子物理和材料科学中的重要发现。理解磁矩是解锁新技术和增强现有技术的关键。总之，磁矩是一个基本概念，连接了物理学和工程学的各个分支。它的影响从微观粒子领域延伸到日常技术的宏观世界。通过研究磁矩，科学家和工程师可以创新和改进在我们的生活中扮演关键角色的设备，从医学成像到数据存储解决方案。随着我们继续探索磁性的奥秘，磁矩无疑将继续成为科学界研究和应用的基石。