Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on AeronauticsD. Appleton, 1882 - 264 páginas |
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Página 52
... thin medium of the air as a buoying medium . Another drawback to great speed ... weight is great , and the speed , comparatively speaking , not remarkable ... posterior extremities in both the lion and tiger are longer , and the bones ...
... thin medium of the air as a buoying medium . Another drawback to great speed ... weight is great , and the speed , comparatively speaking , not remarkable ... posterior extremities in both the lion and tiger are longer , and the bones ...
Página 76
... thin , flexible , and more or less elastic posterior margin . They are screw structures , and when elevated and depressed in the water , twist and untwist , screw - fashion , precisely as wings do , or the tails of the fish , whale ...
... thin , flexible , and more or less elastic posterior margin . They are screw structures , and when elevated and depressed in the water , twist and untwist , screw - fashion , precisely as wings do , or the tails of the fish , whale ...
Página 78
... posterior extremities are lashed from side to side by a twisting , curvilinear motion , precisely as in the seal ... thin flat stone from sinking when projected with force against the surface of water . A precisely similar result is ...
... posterior extremities are lashed from side to side by a twisting , curvilinear motion , precisely as in the seal ... thin flat stone from sinking when projected with force against the surface of water . A precisely similar result is ...
Página 89
... thin posterior one , and in this respect resemble wings . Compare with figs . 36 and 37 , pp . 74 and 76. - Original . rus . quaint animal move alternately , and tilt or partially rotate during their action , as in the sea - bear and ...
... thin posterior one , and in this respect resemble wings . Compare with figs . 36 and 37 , pp . 74 and 76. - Original . rus . quaint animal move alternately , and tilt or partially rotate during their action , as in the sea - bear and ...
Página 108
... posterior thin margin of each wing twisting round the anterior thick one , like the blade of a screw . The artificial wing represented at fig . 53 ( p . 107 ) does the same , cd twisting round a b , and g h round e f . The natural and ...
... posterior thin margin of each wing twisting round the anterior thick one , like the blade of a screw . The artificial wing represented at fig . 53 ( p . 107 ) does the same , cd twisting round a b , and g h round e f . The natural and ...
Outras edições - Ver tudo
Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1885 |
Animal Locomotion, Or, Walking, Swimming, and Flying: With a Dissertation on ... James Bell Pettigrew Visualização integral - 1874 |
Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1893 |
Palavras e frases frequentes
action aërial animals arrangement artificial wave wing artificial wing ascends ball-and-socket joint bat and bird biped blades body bones Borelli Compare with fig concave dead points depressed described downward dugong elastic bands elastic ligaments elbow-joint elevating and propelling elytra extended feathers feet fish flexed flexion flight flying foot force fore gannet gliding gravity hind horizontal direction humerus inclined planes increased insect insect wing kite less lever limbs locomotion long axis machine manner Marey motion move movements muscles muscular muscular system natural wing oblique oscillate ostrich pectoral fins pinion piston porpoise portions position posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse rigid root rotation sail screw shoulder-joint side Sir George Cayley speed spiral superior band swimming tail thick margin tion trunk universal joint upward direction upwards and forwards velocity vertical vibrate walking waved track wedge weight wing descends