Bacon, John Baptiste Ford · San Francisco, P. Elder and company · leaf 84
other theSouth pole, the core is magnetized when in ahorizontal position almost connecting the twopoles and demagnetized when it has turned90 degrees to a vertical position. Consequentlyin one complete revolution of the core it willbe magnetized twice and demagnetized twice.It so happens that a… … 7*osmoN or Core WhenMonetized
Airplanes
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