论文部分内容阅读
磁铁磁场分布不均匀,越接近两极磁场越强,磁铁运动时其周围空间的磁场会发生变化。实验发现若磁场中放有导体,无论导体闭合与否,都会与运动的磁铁发生排斥或吸引的相互作用。其动力学机制与导体内部的分子电流有关,变化磁场穿过分子电流构成的回路时产生感应电场,感应电场力引起分子磁矩的变化,这种变化遵循楞次定律,总是反抗引起磁矩变化的原因。
The uneven distribution of the magnetic field of the magnet, the closer the magnetic field of the two poles is, the more the magnetic field in the space surrounding the magnet changes when it moves. Experiments show that if there is a conductor in the magnetic field, no matter whether the conductor is closed or not, it will interact with the moving magnet to repel or attract. The kinetic mechanism is related to the molecular current inside the conductor. When the changing magnetic field passes through the loop formed by the molecular current, an induced electric field is generated, and the induced electric field force causes the change of the molecular magnetic moment. This change follows the Lenz’s law and always reacts to cause the magnetic moment The reason for the change.