The American Naturalist
There is no evidence that a bird in the act of soaring ever remained stationary in
still air for an instant ; and whether air is hurled against ... Solution of the problem
" is unchanged by “ great velocity . ... velocity " to the bird , and as atmospheric
friction is the only resistance to such translation , speed of flight is determined
1891.
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The Flora of the Olympics
September , 1891. The Problem of the Soaring Birds : I. Lancaster . Fossil Birds
from the Equus Beds of Oregon : R. W. Shufeldt , M. D. An abstract of a
forthcoming work on fossil birds from the Upper Pliocene of the Silver Lake
region , Oregon ...
Author: Louis Fourniquet Henderson
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Page: 296
View: 806
Journal of comparative zoology
1891. 5. Hft . ) Richet , Ch . , Le travail de l'oiseau pendant le vol . in : Revue
Scientif . T. 48 . No. 22 . p . 684—686 . Tatin , V. ... Baines , A. O. , The Soaring of
Birds . in : Nature , Vol . 44. No. ... Lancaster , J. , The Problem of the Soaring
Birds .
Author: Julius Victor Carus
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The Zoological Record
1891 , pp . 273-280 . KENESSEY V. KENESSE , L. Ueber einige seltenere Vögel
des Weissen . burger Comitats . Orn . Jahrb . ii , pp . ... KOTTER , F. ( See
SCHALOW , H. ] LANCASTER , J. The problem of the Soaring Birds . THE
GENERAL ...
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Essays upon heredity and kindred biological problems v 1 1891
For my part , I am inclined to believe that the habit of flying from man is developed
in the first generation which encounters him as a foe ?. We see how wary and
cautious a flock of birds become as soon as a few shots have been fired at them ...
Author: August Weismann
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Actes
In 1891 he published his work , The Soaring of Birds [ 2 ] . ... In his paper
Joukowsky presented a complete solution of the problem of the bird's gliding in
still air and showed in what way the motion is modified when air moves in
horizontal ...
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The Manner of Flight and Its Relation to the Habits of Certain Birds
Airy , Hubert : Soaring of Birds , Nature , April 19,1883 . Dictionary of Birds ...
History of the Birds of Kansas , 1891 . Huffaker , E.C. ... The Problem of Soaring
Flight , Am . Nat . , IX . ; 1055 Wings of Birds , Am . Nat . , XX , ; 701-708 . The
Soaring ...
Author: Dayton Eugene Merrill
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Railway Locomotives and Cars
In June , 1891 , the quidnuncs in Paris were interested in the rumored success of
some experiments with a flying machine carried on ... M. Ader is a well - known
French electrician , the inventor of a telephone , and has long been interested in
the flyingmachine problem . In 1872 he constructed an artificial bird 26 ft . across
and weighing some 53 lbs . , with beating wings actuated by the muscular force
of ...
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Birds in Our Lives
Lawrence Hargrave of Australia in 1891 produced what were probably the first
successful models of ornithopters . ... indicated that the two basic requirements
for flight , lift and thrust , could be treated separately with great resultant
simplification of the overall problem . ... It gave the results of his extensive
observations of birds , especially the larger soaring birds , which he had
observed in northern Africa .
Author: United States Sport Fisheries and Wildlife Bureau
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Page: 561
View: 293
Birds in Our Lives
Lawrence Hargrave of Australia in 1891 produced what were probably the first
successful models of ornithopters . ... indicated that the two basic requirements
for flight , lift and thrust , could be treated separately with great resultant
simplification of the overall problem . ... It gave the results of his extensive
observations of birds , especially the larger soaring birds , which he had
observed in northern Africa .
Author: Ashish Kothari
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Page: 292
View: 265
Zoological Record
1891 , pp . 273-280 . KENESSEY V. KENESSE , L. Ueber einige seltenere Vögel
des Weissen . burger Comitats . Orn . Jahrb . ii , pp . ... KUTTER , F. [ See
SCHALOW , H. ] LANCASTER , J. The problem of the Soaring Birds . THE
GENERAL ...
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Zoological Record
1891 , pp . 273-280 . KENESSEY V. KENESSE , L. Ueber einige seltenere Vögel
des Weissen . burger Comitats . Orn . Jahrb . ii , pp . ... KUTTER , F. ( See
SCHALOW , H. ] LANCASTER , J. The problem of the Soaring Birds . THE
GENERAL ...
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AIAA Journal
20 Here , Lancaster presented some of the most significant facts exhibited by
soaring birds . He also offered an explanation of the phenomenon and tried to
examine the problem of artificial flight . He defined a ... Starting in October 1891 (
Ref .
Author: American Institute of Aeronautics and Astronautics
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