File:Scientific American Volume 86 Number 05 (February 1902) (1902) (14573159919).jpg

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English:

Identifier: scientific-american-1902-02-01 (find matches)
Title: Scientific American Volume 86 Number 05 (February 1902)
Year: 1902 (1900s)
Authors:
Subjects: tion scientific munn electric apparatus railroad steam air electric traction scientific american jerome park isthmian canal spontaneous combustion ten years gravity mound real estate years ago chief engineer
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ane surfaceinclined at about 70 degrees. It will be ob-served how the air-streams pass around theobstacle. Part of them mount on the left side,but the greater number follow the slope. Inthe rear is a region of agitated air whichextends far back. The waves are closer to-gether at the contact of the plane, showing adiminution of speed in Fig. 2, which repre-sents a concave surface at an angle of abou!45 deg. In Figs. 3 and 4 are shown the dif-ferent manner in which the air acts in coi-tact with concave and plane surfaces; thefigures indicate that concave surfaces aremore advantageous than plane surfaces asregards flying, a result which has been al-ready proven by the aviators. In fact, in therear of the concave surface the air is aspi-rated with energy and without much agita-tion, which is a very favorable condition,as .this agitation represents a great expendi-ture of work. Fig. 5 is the same as Fig. 3,APPARATUS FOR PHOTOGRAPHING MOVING FLUIDS. but with a different lighting; the former
Text Appearing After Image:
PHOTOGRAPHS OF THE AIR STREAMS UNDER VARYING CONDITIONS. movement, and not the velocity at various obstacles.More accurate results have been obtained by Marey,an eminent French scientist, who has made the studyof the movements of air his life work. His method isto form a series of parallel air-streams within a largechamber, then to charge them with smoke andthus make them visible. When an obstacle is

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https://www.flickr.com/photos/internetarchivebookimages/14573159919/

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Flickr tags
InfoField
  • bookid:scientific-american-1902-02-01
  • bookyear:1902
  • bookdecade:1900
  • bookcentury:1900
  • booksubject:tion
  • booksubject:scientific
  • booksubject:munn
  • booksubject:electric
  • booksubject:apparatus
  • booksubject:railroad
  • booksubject:steam
  • booksubject:air
  • booksubject:electric_traction
  • booksubject:scientific_american
  • booksubject:jerome_park
  • booksubject:isthmian_canal
  • booksubject:spontaneous_combustion
  • booksubject:ten_years
  • booksubject:gravity_mound
  • booksubject:real_estate
  • booksubject:years_ago
  • booksubject:chief_engineer
  • bookcontributor:
  • booksponsor:
  • bookleafnumber:8
  • bookcollection:scientific-american-1845-1909
  • bookcollection:magazine_rack
  • bookcollection:additional_collections
Flickr posted date
InfoField
27 July 2014


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