Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 стор. |
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Сторінка vii
... rotation of the wing , 147 147 148 149 The wing vibrates unequally with reference to a given line , Points wherein the screws formed by the wings differ from those in common use , 150 • 151 PAGE The wing at all times thoroughly under ...
... rotation of the wing , 147 147 148 149 The wing vibrates unequally with reference to a given line , Points wherein the screws formed by the wings differ from those in common use , 150 • 151 PAGE The wing at all times thoroughly under ...
Сторінка x
... rotation of the artificial wave wing . The different parts of the wing travel at different speeds , 251 252 How the wave wing creates currents and rises upon them , and how the air assists in elevating the wing , 253 The artificial wing ...
... rotation of the artificial wave wing . The different parts of the wing travel at different speeds , 251 252 How the wave wing creates currents and rises upon them , and how the air assists in elevating the wing , 253 The artificial wing ...
Сторінка 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 ...
Сторінка 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 ...
Сторінка 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 ...
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Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on ... James Bell Pettigrew Попередній перегляд недоступний - 2016 |
Загальні терміни та фрази
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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