The Karlqvist approximation revisited
classification
⚛️ physics.class-ph
keywords
approximationkarlqvistangularapproachesbeginningcomparedconditionconformal
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The Karlqvist approximation signaling the historical beginning of magnetic recording head theory is reviewed and compared to various approaches progressing from Green, Fourier, Conformal mapping that obeys the Sommerfeld edge condition at angular points and leads to exact results.
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