The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 34
the conductor in the direction inwhich the current is flowing, the north-seeking or north-pointingpole of the needle will point in a clockwise direction around theconductor—that is, it will point in the direction it would assumeif following the advancing hand of a clock having the conductoras a… … PIQIP Md^ctic fiJ id aboytAstraight Wire, jCurrent \-\o wirii, down li Md^eticCurrent RiAht handWoo. Hood Screw field <ib<!>yf d strdit^t wireflawing ^\>-
Telegraph, Wireless · Radio
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