How to distinguish magnets of the same size

Magnets are very common in life, but do you know how to distinguish magnets of the same size?

One way is to put two magnets of the same size and specification on an adsorbable flat surface, such as a patch, blade, iron gate, etc. , and use the feeling to distinguish the magnitude of the magnetic force. Usually the feeling is correct. No matter what you want to do, feeling is a very important feeling.

The second method is to use electronic scales: the magnetic force is weak magnet is generally related to its density. If the density is small, the magnetic force is relatively small. If the weight is heavy, the magnetic force is relatively large. Conversely, lighter weight, less magnetic force. That is, heavier magnets are relatively larger measuring magnets should reach grams.

The third gauss meter, the results of this test is more intuitive and clear, but in the test, the center of the magnet to measure the center of the magnet, if the magnet edge measurement, the magnet center position is not accurate.

The test of magnet magnetism is generally measured by the Gauss machine, other test methods are:
1. Helmholtz co-vibration coil test, which tests the full magnetic flux of the entire magnet;
2. Hall effect testing, which is routinely reflected in the form of Gauss values, the principle being that a wave tube within a magnetic field shows the Hall effect under a magnetic field;
3. axial field depiction, used to depict the magnetic field distribution of a magnetic combination;
4. fixed suction tests;
5. High-resolution test can measure magnetic field variations of 100,000 parts per million.

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