Magnetic field is an important concept in physics, which refers to the magnetic phenomenon around matter. Magnetic field strength can be expressed by magnetic induction strength, and the unit is usually Tesla (t) or micro Tesla (μT). When we talk about a magnetic field of 58ut, we mean that the magnetic field intensity has reached 58 micro Tesla. Generally speaking, the greater the magnetic field strength, the greater the magnetic force on the magnetic substance.

Magnetic field is widely used, among which magnetic resonance imaging is one of the achievements of magnetic field application. Nuclear magnetic resonance scans the human body through a strong magnetic field, and obtains the internal structure and signals of the human body through imaging technology. The greater the magnetic field intensity, the better the magnetic resonance imaging effect, which is of great significance to improve the accuracy of medical diagnosis. In addition, the magnetic field 58ut can also be used in geomagnetic survey, magnetic card reading and writing and other fields.

Although magnetic fields are widely used, high-intensity magnetic fields are harmful to human body. When the magnetic field intensity reaches more than tens of μT, it may have certain influence on human body. For example, during MRI surgery, the human body will generate a certain induced current after entering the magnetic field, and its intensity is directly proportional to the magnetic field intensity of the human body. Excessive magnetic field intensity may affect important organs such as the heart. Therefore, in the application of magnetic field, it is necessary to pay attention to its safety and use relevant equipment correctly.