Not exactly electronics; please delete if improper.
A magnet exhibits its field as demonstrated with iron filings aligned between its poles.
Say you have an ordinary bar magnet 1cm x 1cm square, 10cm long
Such magnet (N,S at left) fitted with long, straight, parallel pole pieces (upper ==== and lower ====) ; will have a constant field along/between them, near or distant from the magnet ?
Or, at which location A,B,C the placement of a piece of iron between the pole pieces should be attracted the most ?
=======A===================B=====================C=
N
S
=======A===================B=====================C=
A magnet exhibits its field as demonstrated with iron filings aligned between its poles.
Say you have an ordinary bar magnet 1cm x 1cm square, 10cm long
Such magnet (N,S at left) fitted with long, straight, parallel pole pieces (upper ==== and lower ====) ; will have a constant field along/between them, near or distant from the magnet ?
Or, at which location A,B,C the placement of a piece of iron between the pole pieces should be attracted the most ?
=======A===================B=====================C=
N
S
=======A===================B=====================C=