Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 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 , 186 188 Consideration of the forces which propel the ...
... 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 , 186 188 Consideration of the forces which propel the ...
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 aërial 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 aërial 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 - 1873 |
Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1883 |
Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Pré-visualização indisponível - 2016 |
Palavras e frases frequentes
action aërial animals arms and legs arrangement artificial wave artificial wing ascends axes backwards bat and bird beetle biting surface blades body bones Borelli Compare with fig concave convex coracoid Crown 8vo depressed described downward dugong elastic ligaments elbow-joint elevating and propelling ellipse elytra extension extremities feet fins fish flexed flexible flexion flight flying foot gannet horizontal direction humerus inclined planes increased insect insect wing joint kite less lever limbs long axis manner Marey membranous motion move movements muscles muscular natural wing nervures oblique oscillate pectoral fins pinion porpoise portions position posterior margin posterior or thin primary produced quadruped rapid reciprocating Red-legged Partridge remarkable resistance root rotating scapula screw secondary feathers shoulder-joint side spiral swimming tail thick margin tion trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking wave wing waved track weight wing descends
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