Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on AeronauticsD. Appleton, 1882 - 264 páginas |
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Página viii
... elevated and depressed must move for- wards , · The wing ascends when the body descends , and vice versâ , The wing ... propel the wings of insects , . Speed attained by insects , • Consideration of the forces which propel the wings of ...
... elevated and depressed must move for- wards , · The wing ascends when the body descends , and vice versâ , The wing ... propel the wings of insects , . Speed attained by insects , • Consideration of the forces which propel the wings of ...
Página x
... elevating the wing , 253 The artificial wing propelled at various degrees of speed during the down and up strokes , . 255 The artificial wave wing as a propeller , 256 A new form of aerial screw , 256 The aerial wave screw operates upon ...
... elevating the wing , 253 The artificial wing propelled at various degrees of speed during the down and up strokes , . 255 The artificial wave wing as a propeller , 256 A new form of aerial screw , 256 The aerial wave screw operates upon ...
Página 49
... elevating and propelling power of even diminutive inclined planes is very considerable , when carried along at a high speed in a horizontal direction . The wings , in addition to their elevating and propelling power , contribute by ...
... elevating and propelling power of even diminutive inclined planes is very considerable , when carried along at a high speed in a horizontal direction . The wings , in addition to their elevating and propelling power , contribute by ...
Página 59
... elevated from the ground , but behind the supported one ; the third group ( C ) , 12 to 14 , shows the positions ... propelled in advance of the resting one . The letters a , b , and c indicate the angles formed by the bones of the right ...
... elevated from the ground , but behind the supported one ; the third group ( C ) , 12 to 14 , shows the positions ... propelled in advance of the resting one . The letters a , b , and c indicate the angles formed by the bones of the right ...
Página 62
... elevated . The body is more inclined forwards in running than in walking , and there is a period when both legs are off the ground , no such period occurring in walking . “ In quick walking , the propelling leg acts more obliquely on ...
... elevated . The body is more inclined forwards in running than in walking , and there is a period when both legs are off the ground , no such period occurring in walking . “ In quick walking , the propelling leg acts more obliquely on ...
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