Animal Locomotion: Or, Walking, Swimming and Flying, with a Dissertation on AëronauticsD. Appleton, 1893 - 264 páginas |
Dentro del libro
Resultados 1-5 de 16
Página 67
... causing the body of the fish to move in the line dc f . The explanation is apparently a satisfactory one ; but a careful analysis of the swimming of the living fish induces me to believe it is incorrect . According to this , the ...
... causing the body of the fish to move in the line dc f . The explanation is apparently a satisfactory one ; but a careful analysis of the swimming of the living fish induces me to believe it is incorrect . According to this , the ...
Página 72
... causing its anterior and posterior portions to assume opposite curves . The pectoral and other fins are also thrown into curves when in action , the movement , as in the body itself , travelling in spiral waves ; and it is worthy of ...
... causing its anterior and posterior portions to assume opposite curves . The pectoral and other fins are also thrown into curves when in action , the movement , as in the body itself , travelling in spiral waves ; and it is worthy of ...
Página 80
... causing his hands to work like sculls , so as to make figure - of - 8 loops in the water . This motion greatly resembles that made by the swimming wings of the penguin . It is most effective when the hands are turned slightly upwards ...
... causing his hands to work like sculls , so as to make figure - of - 8 loops in the water . This motion greatly resembles that made by the swimming wings of the penguin . It is most effective when the hands are turned slightly upwards ...
Página 91
... causing the feathers to roll down , and giving to the back of the wing , which in this case communi- cates the more effective stroke , the angle or obliquity neces- sary for sending the animal forward . This angle , I may observe ...
... causing the feathers to roll down , and giving to the back of the wing , which in this case communi- cates the more effective stroke , the angle or obliquity neces- sary for sending the animal forward . This angle , I may observe ...
Página 95
... causing the mass of the bird to pursue a more or less horizontal course . I offer this explanation of the action of the wing in and out of the water after repeated and careful observation in tame and wild birds , and , as I am aware ...
... causing the mass of the bird to pursue a more or less horizontal course . I offer this explanation of the action of the wing in and out of the water after repeated and careful observation in tame and wild birds , and , as I am aware ...
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Términos y frases comunes
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