. Practical physics. illl. VVlKELKhS TeLKPHONE UTILIZED IN AviATION One of the most notable developments of the war was the directing of a squadronof airplanes in intricate maneuvers by wireless telephone either from the groundor by the commander in the leading plane. The upper panel shows the pilot andthe observer conversing with special apparatus designed to eliminate plane noises,and the lower panel shows President Wilson talking by wireless to airplanes

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysics, bookyear1922