Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsD. Appleton, 1885 - 264 páginas |
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Página vii
... rotation of the wing , The wing vibrates unequally with reference to a given line , Points wherein the screws formed by the wings differ from those in common use , · 147 147 148 149 • 150 151 PAGE 154 · 156 159 165 · 165 166 · CONTENTS ...
... rotation of the wing , The wing vibrates unequally with reference to a given line , Points wherein the screws formed by the wings differ from those in common use , · 147 147 148 149 • 150 151 PAGE 154 · 156 159 165 · 165 166 · CONTENTS ...
Página x
... rotation of the artificial wave wing . The different parts of the wing travel at different speeds , How the wave wing creates currents and rises upon them , and how the air assists in elevating the wing , · The artificial wing propelled ...
... rotation of the artificial wave wing . The different parts of the wing travel at different speeds , How the wave wing creates currents and rises upon them , and how the air assists in elevating the wing , · The artificial wing propelled ...
Página 9
... rotate upon the trunk , the head of the femur forming the centre of a circle the radius of which is described by the ad- vancing foot . A double rolling movement is thus established , the body rolling on the extremity the one instant ...
... rotate upon the trunk , the head of the femur forming the centre of a circle the radius of which is described by the ad- vancing foot . A double rolling movement is thus established , the body rolling on the extremity the one instant ...
Página 11
... rotate upon one or more of the vertebræ of the spine , the vertebra or vertebræ forming the centre of a lemniscate , which is described by the caudal fin . There is , therefore , an obvious analogy between the tail of the fish and the ...
... rotate upon one or more of the vertebræ of the spine , the vertebra or vertebræ forming the centre of a lemniscate , which is described by the caudal fin . There is , therefore , an obvious analogy between the tail of the fish and the ...
Página 12
... rotating upon the body of the bird during the down stroke , the body of the bird rotating on the wing during the up stroke . When the wing descends it describes a downward and forward curve , and elevates the body in an upward and ...
... rotating upon the body of the bird during the down stroke , the body of the bird rotating on the wing during the up stroke . When the wing descends it describes a downward and forward curve , and elevates the body in an upward and ...
Outras edições - Ver tudo
Animal Locomotion: Or Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Visualização integral - 1882 |
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 albatross angle animals arms and legs arrangement artificial wave artificial wing ascends backwards bat and bird biped blades body bones Borelli Compare with fig concave convex 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 horizontal direction humerus inclined planes increased insect insect wing joint kite less levers limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate pectoral pectoral fins pinion porpoise portion position posterior margin posterior or thin produced quadruped rapidity remarkable resistance reverse root rotation sail screw sea-bear shoulder-joint side speed spiral swimming tail thick margin tion travelling surfaces trunk twisting universal joint upward direction upwards and forwards velocity vertical vertical direction vibrate walking waved track weight wing descends