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More "Forward motion" Quotes from Famous Books
 ... principle that the resistance in a fluid, and I believe also in air, increases in a greater ratio than the velocity (? as the square), the descending stroke might be more rapid than the ascending one, and the resultant would be an upward or forward motion. Secondly, some kind of furling or feathering by a rotatory motion of the wing might take place on raising the wings. I think, however, it is clear that neither of these actions occurs during the flight of insects. In both slow- and quick-flying species there is no ...
— Alfred Russel Wallace: Letters and Reminiscences Vol 2 (of 2) • James Marchant
... a quick, forward motion on the bench, "you think I ought to settle this matter immediately, and relieve myself at once from the imputation of trifling with ...
— The Captain's Toll-Gate • Frank R. Stockton
... MOVEMENT.—The moment the wing starts to swing upwardly the rear end is depressed, and now, as the bird is moving forwardly, the wing surface has a positive angle of incidence, and as the wing rises while the forward motion is taking place, there is no resistance which is effective enough to counteract the momentum which ...
— Aeroplanes • J. S. Zerbe***
... combination of runners and wheels. A moderately firm surface is necessary for the machine to run along the ground; if the ground be soft or marly the wheels would sink in the soil, and serious accidents have resulted from the sudden stoppage of the forward motion ...
— The Mastery of the Air • William J. Claxton
... forward motion of the piston the valve is pushed back by the eccentric until the steam port is fully opened, and is then drawn forward, covering the port. At the end of the power stroke the port has begun to open to the air, to allow the steam to escape throughout the exhaust stroke, in the course of which the ...
— Things To Make • Archibald Williams
... sky, with the bright needle points and the corona-winged sun in it. Instinct made him grab futilely outward, for the sense of weightlessness was the same as endless fall. He was falling, around the Earth, his forward motion exactly balancing his downward motion, in a locked ...
— The Planet Strappers • Raymond Zinke Gallun
... levers desperately, while Peggy, white faced but silent, clung tightly to the sides of the chassis. Professor Wandering William did not utter a word, but his lips moved, as, from a pleasing rapid forward motion their course suddenly changed to that fearful ...
— The Girl Aviators on Golden Wings • Margaret Burnham
... the cab of No. 999 with the lever hooked up for forward motion, and placed a firm hand ...
— Ralph on the Overland Express - The Trials and Triumphs of a Young Engineer • Allen Chapman
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