Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 284
the opinion of ex-perts, be of the greatestservice to aerial naviga-tion by enabling it to con-tinue uninterrupted fromone aerodrome to an-other at night and in foggy weather, under circumstances when hith-erto flying has been impracticable. the aeroplane, while the pilot hears the sig-nals through… … While we can not here discuss the peculiartechnical difficulties which Lieutenant Lothwas obliged to surmount, we may say that,in his system, an alternating current of twoor three amperes, having a given frequency,is sent along a wire connecting the aero-dromes. The aeroplane carries a small…
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