Wednesday, May 18, 2011

Color Film Silver Nitrate Prints

                                                          Red

                                                      Yellow
 This was an experiment to adjust the color spectrum of light coming into contact with a photosensitive rag paper. A salted paper solution of 5% salt mixture and 2 coats of 12% silver nitrate were added to the paper to give it photosensitive properties. The the paper is cut into strips and then placed over half of each strip is a red, yellow and blue color film piece. Then the paper is exposed to the sun for about ten minutes. The results show a comparison on each strip of paper of a normal exposure, to an adjusted color spectrum. We have different results for each showing the us that color negatives do in fact have a large impact on the exposure and the amount of energy coming through and being blocked. Blue has a very small difference in exposures because blue light has a high wave length, therefore allowing more uv rays to affect the photo sensitive paper.  This explanation also can explain why red and yellow do not allow as much uv light through because they allow less uv light through to expose the paper because of their are on different wave lengths eachother, and blue.

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