Ledeboer, John H. (John Henry), 1883-1930 · London : [s.n] · leaf 336
d by the symbol K. jected to the impact of a current of air of the same Having established once and for all the magnitude of velocity of motion. However interesting and even the air resistance on such a plate of given dimensions, essential this knowledge may be to the aeronautical which forms, as… … Ry courtesy of) [ The Illustrated London News OVER THE ENEMY’S LINES IN FRANCE. One of the finest aerial photographs yet taken during the war. A Parasol Morane monoplane has been snapped from another machine while flying over the German lines, which can be plainly discerned below. The altitude is…
