Following the previous content of Huaguang Electronics, let me continue to introduce it to you.
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Magnetism is one of the basic properties of matter. The magnetic field is associated with the movement of various forms of electric charge. Due to the movement of electrons inside the material (the trajectory of which will change under the influence of an external magnetic field) and spin, a certain size of magnetic moment will be generated, thus generating a magnetic field. All materials are magnetic.
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Things like measurement and calibration
Metrology is the measurement that uses technical and legal means to achieve unified units and accurate and reliable values. In the measurement process, the measuring tools and instruments used are considered to be standard, and they are used to calibrate and verify the measuring tools and instruments under inspection to measure and ensure the reliability of the measurement results obtained when measuring using the measuring tools and instruments under inspection. Measurement involves the definition and conversion of measurement units; the transfer of quantitative values and the measures, procedures and legal systems that must be taken to ensure the uniformity of quantitative values.
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