A magnetic bubble memory has {TAIL ~ a reading zone} with thin detection elements, coated with an insulating layer which carries thick bubble propagation patterns of high magnetic permeability material, and a bubble stretching zone also including thick propagation patterns of shapes such that {HEAD ~ the rotating field} of the device causes the bubbles to progress along the patterns 
A magnetic bubble memory has { TAIL ~ a reading zone } with thin detection elements , coated with an insulating layer which carries thick bubble propagation patterns of high magnetic permeability material , and a bubble stretching zone also including thick propagation patterns of shapes such that { HEAD ~ the rotating field } of the device causes the bubbles to progress along the patterns
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH