More Magnets, More Power ? No! This magnet setup is strong !|Halbach Array|Magnetic force experiment

I learned about the Halbach array because of everyone's comments. This video was made based on the specific situations in the process of knowing and using it.
In many cases, the more magnets, the better, and pure stacking does not increase the magnetic force.
The video experiments the difference in magnetic force generated by various magnet arrangements within a certain range.
Stacking magnet experiment
Magnet NS face alternation experiment
Halbach array magnetic force experiment
Non-contact Halbach array experiment
Asymmetric magnet composition Halbach array experiment
After watching the video, you should have a general idea of ​​how your magnets need to be arranged.