What is the reason why the compass needle doesn't move when looking at the cemetery?

1. Magnetic field interference: The compass pointer may be affected by the surrounding magnetic field, such as high-voltage transmission lines, transformers, cables, etc. , which may interfere with the geomagnetic field, thus causing the compass pointer to stay still.

2. Instability of geomagnetic field: In some areas with complex geological structure, the geomagnetic field may change frequently, which will also cause the compass pointer to stand still.

3. Instrument failure: The failure of the compass pointer may also be due to the failure of the instrument itself, such as the needle shaft, which leads to the fixed pointer or poor contact, or affects the normal use of the compass pointer.

4. Man-made interference: The user may not have mastered the correct use skills, such as holding the instrument unsteadily, sweating on his hands, changing his posture many times, etc. This may interfere with the compass pointer.

When the compass needle is not moving, you can try to shake the compass back and forth, or try to change the position to determine whether it is caused by human interference or unstable ground magnetic field. At the same time, it is also necessary to check whether the compass instrument itself is faulty.