One of the mysteries of the English language finally explained.
The ability of a substance to retain or resist magnetization, frequently measured as the strength of the magnetic field that remains in a sample after removal of an inducing field.‘iron is easily magnetized but has low retentivity’count noun ‘a retentivity of about 10,000 gauss’
- ‘Note that residual magnetism and retentivity are the same when the material has been magnetized to the saturation point.’
- ‘Another serious problem concerning erase heads used in conjunction with record/write heads is that of magnetic retentivity.’
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