Animal Locomotion: Or, Walking, Swimming, and Flying, with a Dissertation on AëronauticsH. S. King & Company, 1873 - 264 стор. |
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Сторінка vii
... increases , 132 • Wings , their form , etc. All wings screws , structurally and functionally , 136 • The wing , during its action , reverses its planes , and describes a figure - of - 8 track in space , 140 The wing , when advancing ...
... increases , 132 • Wings , their form , etc. All wings screws , structurally and functionally , 136 • The wing , during its action , reverses its planes , and describes a figure - of - 8 track in space , 140 The wing , when advancing ...
Сторінка 7
... increasing as the medium to be traversed becomes less dense . It , however , does not essentially differ from the other two , and I shall be able to show in the following pages , that the materials and forces employed in flight are ...
... increasing as the medium to be traversed becomes less dense . It , however , does not essentially differ from the other two , and I shall be able to show in the following pages , that the materials and forces employed in flight are ...
Сторінка 8
... increasing in size as the medium to be traversed becomes less dense and the fulcrum more movable . Thus terrestrial animals have smaller travelling surfaces than amphibia , amphibia than fishes , and fishes than insects , bats , and ...
... increasing in size as the medium to be traversed becomes less dense and the fulcrum more movable . Thus terrestrial animals have smaller travelling surfaces than amphibia , amphibia than fishes , and fishes than insects , bats , and ...
Сторінка 27
... increased . This alternate diminution and increase of the angles formed by the osseous levers produce the movements ... increases with their length , and vice versa . It is a curious circumstance , and worthy the attention of those in ...
... increased . This alternate diminution and increase of the angles formed by the osseous levers produce the movements ... increases with their length , and vice versa . It is a curious circumstance , and worthy the attention of those in ...
Сторінка 34
... increasing as the oblique muscles preponderate . The combination of ball - and - socket and hinge - joints , with their con- comitant oblique and longitudinal muscular cycles ( the former occurring in their most perfect forms where the ...
... increasing as the oblique muscles preponderate . The combination of ball - and - socket and hinge - joints , with their con- comitant oblique and longitudinal muscular cycles ( the former occurring in their most perfect forms where the ...
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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 albatross angle animals arms and legs arrangement artificial wave artificial wing ascends backwards ball-and-socket joint bat and bird biped blades body bones Borelli Compare with fig concave convex Crown 8vo depressed described downward dugong elastic ligaments elbow-joint elevating and propelling ellipse elytra extended feet fins fish flexed flexible flexion flight flying foot force gannet glide hind horizontal direction humerus inclined planes increased insect wing joint kite less lever limbs locomotion long axis manner Marey motion move movements muscles muscular muscular system natural wing nervures oblique oscillate ostrich pectoral fins pinion porpoise portion position posterior margin posterior or thin produced quadruped rapid remarkable resistance right arm 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 vibrate walking waved track weight wing descends
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