diamagnetic substance

简明释义

抗磁性材料

英英释义

例句

1.Glass is a common diamagnetic substance that does not retain any magnetization.

玻璃是一种常见的顺磁性物质，不会保持任何磁化。

2.Copper is another example of a diamagnetic substance used in electrical applications.

铜是另一个在电气应用中使用的顺磁性物质的例子。

3.In a laboratory experiment, we observed how the diamagnetic substance reacted to a strong magnet.

在实验室实验中，我们观察到顺磁性物质对强磁铁的反应。

4.When placed in a magnetic field, a diamagnetic substance will create an opposing magnetic field.

当放置在磁场中时，顺磁性物质会产生一个相反的磁场。

5.A typical example of a diamagnetic substance is bismuth, which repels magnetic fields.

典型的顺磁性物质示例是铋，它会排斥磁场。

作文

Diamagnetism is a fascinating phenomenon observed in certain materials, known as diamagnetic substances. These substances exhibit a unique property where they create an opposing magnetic field when exposed to an external magnetic field. This results in a very weak repulsion from the magnetic field, which is contrary to the behavior of ferromagnetic or paramagnetic materials that are attracted to magnets. Understanding diamagnetic substances not only deepens our knowledge of material science but also has practical implications in various fields such as electronics and medical imaging.The behavior of diamagnetic substances can be attributed to their atomic structure. Atoms consist of electrons that orbit the nucleus, and these electrons produce tiny magnetic moments due to their motion. In diamagnetic substances, the electron configurations are such that all the electrons are paired. This pairing leads to the cancellation of their magnetic moments, resulting in no net magnetic field in the absence of an external magnetic influence.When a diamagnetic substance is placed in a magnetic field, the external field induces a change in the motion of the electrons. The paired electrons slightly shift their orbits, creating a small magnetic moment that opposes the applied magnetic field. This effect is so subtle that it is often overshadowed by the stronger attractions of ferromagnetic and paramagnetic materials.Common examples of diamagnetic substances include bismuth, copper, and graphite. These materials are widely used in various applications due to their unique properties. For instance, bismuth is often used in low-temperature superconductors, while copper is a well-known conductor of electricity. The diamagnetic properties of these materials can be exploited in technologies like magnetic levitation, where objects can be made to float above a magnet without any contact.One of the most interesting demonstrations of diamagnetic substances occurs with pyrolytic graphite. When subjected to a strong magnetic field, this material can actually levitate. This phenomenon occurs because the magnetic field induces currents within the graphite, which generate their own magnetic field that opposes the external field. Such experiments not only showcase the principles of diamagnetism but also serve as engaging educational tools to illustrate complex scientific concepts.In addition to their physical properties, diamagnetic substances also play a role in various scientific research areas. For example, in the field of medical imaging, diamagnetic materials are used in magnetic resonance imaging (MRI) machines. The ability of these substances to respond predictably in magnetic fields allows for clearer imaging and better diagnostic capabilities.In conclusion, diamagnetic substances represent a unique class of materials with intriguing properties that set them apart from other types of magnetic materials. Their ability to repel magnetic fields, albeit weakly, opens up a world of possibilities in both theoretical research and practical applications. As scientists continue to explore the nuances of diamagnetism, we may uncover even more innovative uses for these remarkable substances in technology and medicine. Understanding diamagnetic substances not only enriches our comprehension of physics but also highlights the interconnectedness of various scientific disciplines, ultimately leading to advancements that benefit society as a whole.

反磁性是一种有趣的现象，观察到某些材料中，这些材料被称为反磁性物质。这些物质表现出一种独特的特性，当暴露于外部磁场时，会产生一个相反的磁场。这导致它们对磁场的微弱排斥，这与铁磁性或顺磁性材料的行为相反，后者会被磁铁吸引。理解反磁性物质不仅加深了我们对材料科学的认识，而且在电子学和医学成像等多个领域具有实际意义。反磁性物质的行为可以归因于其原子结构。原子由围绕原子核旋转的电子组成，这些电子由于其运动产生微小的磁矩。在反磁性物质中，电子的排列方式使得所有电子都成对存在。这种配对导致它们的磁矩相互抵消，从而在没有外部磁场影响的情况下，没有净磁场。当反磁性物质置于磁场中时，外部磁场会诱导电子运动的变化。配对电子略微改变它们的轨道，产生一个微小的磁矩，反对施加的磁场。这个效应是如此微妙，以至于常常被铁磁性和顺磁性材料的强吸引所掩盖。常见的反磁性物质包括铋、铜和石墨。这些材料由于其独特的性质而广泛应用于各种应用中。例如，铋常用于低温超导体，而铜则是众所周知的电导体。这些材料的反磁性特性可以在诸如磁悬浮等技术中得到利用，使物体能够在不接触的情况下漂浮在磁铁上方。反磁性物质的一个有趣演示发生在热解石墨上。当受到强磁场作用时，这种材料实际上可以悬浮。这种现象的发生是因为磁场在石墨内部诱导电流，这些电流产生自己的磁场，反对外部磁场。这类实验不仅展示了反磁性的原理，还作为引人入胜的教育工具来说明复杂的科学概念。除了它们的物理特性，反磁性物质还在各个科学研究领域发挥着作用。例如，在医学成像领域，反磁性材料用于磁共振成像（MRI）机器。这些物质在磁场中可预测地反应的能力，使得成像更清晰，诊断能力更强。总之，反磁性物质代表了一类独特的材料，其迷人的特性使它们与其他类型的磁性材料区分开来。它们微弱地排斥磁场的能力开启了理论研究和实际应用的可能性。随着科学家继续探索反磁性的细微差别，我们可能会发现这些显著物质在技术和医学中的更多创新用途。理解反磁性物质不仅丰富了我们对物理学的理解，还突显了各种科学学科之间的相互联系，最终带来有益于整个社会的进步。