When a magnetic force field is removed and some magnetic power remains, this is an example ofremanence.
Origin of remanencesee remanent
Origin of remanenceFrom Middle English remanent, remaining, from Latin reman&emacron;ns, remanent-, present participle of reman&emacron;re, to remain; see remain.
remanence - Computer Definition
The persistence of residual magnetism (on magnetic storage media) or deformations (on optical media) that may carry information susceptible to discovery using special techniques. To avoid compromise of confidential information, one can destroy data by repeated overwriting with random data.