HALBACH ARRAY How to double the power of magnets, science experiment

In this magnetic experiment I show you how using a Halbach array can double the power of the magnets. This particular arrangement of the magnets, bound by means of glue allows to almost double the magnetic field from an array side while the other side the magnetic field is almost zero. The array of Halbach find practical applications in the Maglev train and in particle accelerators.

Magnets used
https://sumag.net/q-15-04-04-mn-x01

More info here
https://www.supermagnete.com/Magnet-applications/Building-a-Halbach-array