The Process of the Magnetization of Magnetic Tape
Methods for making visible a magnetic recording on tape are described. The effect of permanent fields added to the tape magnetization in different directions is shown to prove that the tape magnetization has a prevailing longitudinal character. The method has been refined to provide a resolving power down to a wavelength of less than 0.4 mil, i.e., the bias frequency at 30 ips tape speed, and an exact azimuth measurement within 1 minute of arc.
- Print ISSN
- 0361-4573
- Published
- 1956-02
- Content type
- Original Research
- DOI
- 10.5594/J14504
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