bond

18 photos tagged bond, from 9 members of Flickr Commons.

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8
1900
2013

 

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5% of these photos are geotagged.

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The last upload was March 2016.

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Looking west from Sydney Observatory

  • beachcomber australia said:
    Compare with -
  • BobMeade said:

Untitled

  • CJ Nye said:
    Why so blue?
  • Smithsonian Institution said:
    Smithsonian here. Here's a little more about cyanotypes. You can find more descriptions of phtoographic media in our search- photography.si.edu Cyanotype Sir John Herschel invented the process for printing a cyanotype—more commonly known as a blueprint—in 1842. Creating a cyanotype involved developing prepared paper with an iron-salt solution. After treating the paper with ferric ammonium citrate and potassium ferriyanide, a photographer would place a negative, or even a drawing, on top of it in direct sunlight, causing the exposed parts of the paper to turn bright blue from the effects of the iron. Subsequently submerging the print in water caused the image to become fixed and the unexposed chemicals to wash away, and the iron’s oxidation caused the blue image to intensify. Engineers and architects favored this process for copying drawings because it was stable, efficient, and inexpensive. Thomas Smillie, the Smithsonian’s first photographer, employed this printing method to keep track of his glass-plate negatives. He made and cataloged cyanotypes of each image, after which he stored the corresponding glass-plate negative.
  • swanq said:
    S. P. Langley (who signed this check) was the 3rd Secretary of the Smithsonian (1887-1906) en.wikipedia.org/wiki/Samuel_Pierpont_Langley

Artis heeft er weer twee jonge pantertjes bij

  • 5 older comments, and then…
  • E. Damarisz Gál said:
    sweet
  • batvoca said:
    translation: Artis [Zoo Amsterdam] got again two young panthers
  • songqin said:
    什么!!!
  • Rhonda Karg said:
    wow, what a capture!
  • Arnaldo Araujo B.S. said:
    So sweet!