Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
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Resultados 1-5 de 21
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 . quaint animal move alternately , and tilt or partially rotate during their action , as in the sea - bear and walrus ...
... thin posterior one , and in this respect resemble wings . Compare with figs . 36 and 37 , pp . 74 and 76. - Original . quaint animal move alternately , and tilt or partially rotate during their action , as in the sea - bear and walrus ...
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 ef . 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 ef . The natural and ...
Índice
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Palavras e frases frequentes
action aërial albatross angle animal arms and legs arrangement artificial wave artificial wing ascends backwards bat and bird biped blades body bones Borelli Compare with fig concave depressed described downward dugong effective stroke elastic ligaments elbow-joint elevating and propelling ellipse elytra extended feet fins fish flexed flexible flexion flight flying foot force gannet glide hind horizontal direction humerus inclined planes increased insect wing joint kite less lever limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate pectoral fins pinion porpoise portion position posterior extremities posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse right arm root rotation sail screw sea-bear shoulder-joint side speed spiral swimming tail thick margin travelling surfaces trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking waved track weight wing descends