Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on AeronauticsD. Appleton, 1882 - 264 páginas |
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Página viii
... wing at all times thoroughly under control , The natural wing when elevated and depressed must move for- wards , · The wing ascends when the body descends , and vice versâ , The wing acts upon yielding fulcra , 154 156 159 165 · The wing ...
... wing at all times thoroughly under control , The natural wing when elevated and depressed must move for- wards , · The wing ascends when the body descends , and vice versâ , The wing acts upon yielding fulcra , 154 156 159 165 · The wing ...
Página ix
... wing , to what owing , 194 Reasons why the effective stroke should be delivered down- wards and forwards , 195 The ... descending , turning , etc. , 201 The flight of birds referable to muscular exertion and weight , Lifting capacity of birds ...
... wing , to what owing , 194 Reasons why the effective stroke should be delivered down- wards and forwards , 195 The ... descending , turning , etc. , 201 The flight of birds referable to muscular exertion and weight , Lifting capacity of birds ...
Página 12
... wing of the bird , and the extremity of the biped and quadruped , are screws ... descends to make the up and down strokes , it rotates within the facettes or ... wing in flying correspond to the steps made by the extremities in walking ...
... wing of the bird , and the extremity of the biped and quadruped , are screws ... descends to make the up and down strokes , it rotates within the facettes or ... wing in flying correspond to the steps made by the extremities in walking ...
Página 100
... descending beneath the level of the body of the fish . In this respect the flying - fin of the fish differs slightly from the wing ... descend below the body , account for the admitted absence of beating , and have no doubt originated the ...
... descending beneath the level of the body of the fish . In this respect the flying - fin of the fish differs slightly from the wing ... descend below the body , account for the admitted absence of beating , and have no doubt originated the ...
Página 104
... wing , where its elevat- ing and propelling power is greatest . This arrangement in- sures that the large quantity ... descends , as shown at p ' , the air ( = fulcrum f ' ) resists its downward passage , and forces the body ( ) , or its ...
... wing , where its elevat- ing and propelling power is greatest . This arrangement in- sures that the large quantity ... descends , as shown at p ' , the air ( = fulcrum f ' ) resists its downward passage , and forces the body ( ) , or its ...
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