Superposition of Semi-Infinite Solenoids for Calculating Magnetic Fields of Thick Solenoids

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Abstract
A simple method is given for calculating the magnetic field components in or around any thick finite solenoid by superposition of fields of semi‐infinite solenoids with zero inner radius. Equations and graphs are presented for the field components of such semi‐infinite solenoids. From these graphs, the fields for solenoids of practical interest can be obtained with errors of less than a few percent. Greater accuracy is possible if numerical tables are used instead of graphs.

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