Amateur radio : how and why of wireless with complete instructions on operation of receiving outfits (1922)
Grainger, Maurice J · New York : James A. McCann · leaf 74
LULU UJ UJ PLATE. TERMINALS Diagram of Audion Tube, ShowingRelative Positions of Elements WIRE MAGNETICFIELD-*- … Fig 11 —J T~ To Battery To Battery 54 AMATEUR RADIO that of an atom. Electrons are of two kinds,positive and negative, and an atom is a sort ofsolar system in which a number of negativeelectrons revolve round a nucleus composedchiefly of positive electrons. In the case ofmetals some of these…
Radio · Amateur radio stations
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