Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on AeronauticsD. Appleton, 1882 - 264 páginas |
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Página 31
... joint whose motion is confined to one plane and the ball - and - socket joints whose movements are universal , every degree of obli- quity is found in the direction of the muscles , and every pos- sible modification in the disposition ...
... joint whose motion is confined to one plane and the ball - and - socket joints whose movements are universal , every degree of obli- quity is found in the direction of the muscles , and every pos- sible modification in the disposition ...
Página 54
... universal joints by which the arms are articulated to the shoulders ( x , x ) , and the legs to the pelvis ( a , a ... joint only permits the limb to move forwards , the knee - joint backwards , and the ankle - 54 ANIMAL LOCOMOTION .
... universal joints by which the arms are articulated to the shoulders ( x , x ) , and the legs to the pelvis ( a , a ... joint only permits the limb to move forwards , the knee - joint backwards , and the ankle - 54 ANIMAL LOCOMOTION .
Página 92
... universal joint . The wing is beautifully twisted upon itself , and when it is elevated and advanced , it rolls up from the side of the bird at varying degrees of obliquity , till it makes a right angle with the body , when it presents ...
... universal joint . The wing is beautifully twisted upon itself , and when it is elevated and advanced , it rolls up from the side of the bird at varying degrees of obliquity , till it makes a right angle with the body , when it presents ...
Página 104
... universal joint by which the wing is attached to the body . When the wing ascends , as shown at p , the air ( = fulcrum f ) resists its upward passage , and forces the body ( ) , or its representative ( w ) , slightly downwards . When ...
... universal joint by which the wing is attached to the body . When the wing ascends , as shown at p , the air ( = fulcrum f ) resists its upward passage , and forces the body ( ) , or its representative ( w ) , slightly downwards . When ...
Página 118
... universal joint , which admits of every variety of motion , the insect is always sus- pended ( very much as a compass set upon gimbals is sus- pended ) ; the wings , when on a level with the body , vibrating in such a manner as to ...
... universal joint , which admits of every variety of motion , the insect is always sus- pended ( very much as a compass set upon gimbals is sus- pended ) ; the wings , when on a level with the body , vibrating in such a manner as to ...
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