magnetic field intensity

简明释义

磁场强度

英英释义

例句

1.High magnetic field intensity can interfere with the operation of pacemakers.

高磁场强度可能会干扰心脏起搏器的工作。

2.Engineers need to consider magnetic field intensity when designing electric motors.

工程师在设计电动马达时需要考虑磁场强度。

3.The magnetic field intensity in this area is measured in teslas.

该地区的磁场强度以特斯拉为单位进行测量。

4.The magnetic field intensity around the magnet was stronger than expected.

磁铁周围的磁场强度比预期的要强。

5.The scientist measured the magnetic field intensity in the lab to study its effects on electronic devices.

科学家在实验室中测量了磁场强度以研究其对电子设备的影响。

作文

Understanding the concept of magnetic field intensity is essential in the field of physics and engineering. It refers to the strength of a magnetic field at a specific point in space, which is crucial for various applications such as electric motors, transformers, and magnetic resonance imaging (MRI). The magnetic field intensity can be represented by the symbol 'H' and is measured in amperes per meter (A/m). This measurement indicates how much magnetic force is exerted on a unit length of wire carrying a current. To comprehend the significance of magnetic field intensity, we must first understand the nature of magnetic fields. A magnetic field is created by moving electric charges, and it can influence other charges within its vicinity. The intensity of this field varies depending on the distance from the source and the amount of current flowing through the conductor. For instance, in a solenoid, which is a coil of wire, the magnetic field intensity can be increased by increasing the number of turns in the coil or the current passing through it.In practical applications, the magnetic field intensity plays a vital role in determining the performance of electrical devices. In electric motors, a higher magnetic field intensity results in greater torque and efficiency. Similarly, in transformers, the intensity of the magnetic field affects the voltage transformation ratio. Engineers must carefully calculate the magnetic field intensity to ensure that these devices operate effectively and safely.Moreover, the magnetic field intensity is also important in medical imaging techniques like MRI. In MRI machines, a strong and uniform magnetic field intensity is required to produce clear images of the internal structures of the body. The intensity of the magnetic field can affect the resolution and quality of the images obtained, making it crucial for accurate diagnosis.In conclusion, the concept of magnetic field intensity is fundamental in understanding how magnetic fields interact with electric currents and materials. Its applications span across various fields, including engineering and medicine. By grasping the principles behind magnetic field intensity, we can better appreciate the technology that relies on this physical phenomenon and its impact on our daily lives.

理解磁场强度的概念在物理学和工程学中至关重要。它指的是在特定空间点上磁场的强度，这对于电动机、变压器和磁共振成像（MRI）等各种应用至关重要。磁场强度用符号'H'表示，单位是安培每米（A/m）。这个测量值表明对一单位长度的电流导线施加了多少磁力。为了理解磁场强度的重要性，我们必须首先了解磁场的性质。磁场是由移动的电荷产生的，它可以影响其附近的其他电荷。该场的强度因离源的距离和流经导体的电流量而异。例如，在一个螺线管中，磁场强度可以通过增加线圈的圈数或流过它的电流来提高。在实际应用中，磁场强度在决定电气设备性能方面发挥着至关重要的作用。在电动机中，更高的磁场强度会导致更大的扭矩和效率。同样，在变压器中，磁场的强度会影响电压变换比。工程师必须仔细计算磁场强度以确保这些设备有效且安全地运行。此外，磁场强度在医学成像技术如MRI中也很重要。在MRI机器中，需要强大且均匀的磁场强度以产生身体内部结构的清晰图像。磁场的强度会影响获得图像的分辨率和质量，因此对准确诊断至关重要。总之，磁场强度的概念对于理解磁场如何与电流和材料相互作用是基础性的。它的应用跨越多个领域，包括工程和医学。通过掌握磁场强度背后的原理，我们可以更好地欣赏依赖这一物理现象的技术及其对我们日常生活的影响。