GAL: Gradient Adaptive Lattice: GAL: Guggenheim Aeronautical Laboratory: GAL: Gas Analysis Laboratory: GAL: George A. Lincoln (WWII General) Gal: Galindian (linguistics) GAL: Guinea Airways, Ltd. GAL: Groupe Antiterroristes de LibÃ©ration (French: Anti-Terrorist Liberation Group) GAL: Gathering Arm Loader (mining) GAL: Graphics Adapter Language: GAL: Gimbal Angle Loss: GAL
1 If the distance between two magnets is doubled the magnetic force between them will fall to a quarter of the initial value. #(F//4)#.  If the distance between two magnets is halved the magnetic force between them will increase to four times the initial value. #(4F)#.
Within the wall, the magnetization must change direction from that in one domain to that in the other domain. Domain walls have a finite width that is determined principally by exchange and magnetocrystalline energy. Let's consider a domain wall in which the magnetization changes by 180Â°. The change in magnetization within the wall can be gradual as in (a) or abrupt as in (b).