Chemical Experiments Illustrating the Theory Practice And Application of the
Chemical Experiments Illustrating the Theory Practice And Application of the
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At the end D is a sliding tube, with a double convex lens E in the end of it, and a slide F which passes over it, and shuts off the light. To use the instrument, put a piece of common white paper between A and B ; then shut down B. Place the camera before the landscape, and move the tube D, until by looking through G a clear view of the prospect is seen on the paper. Now, without moving the box, or disarranging the focus, shut G and F open 16 122 C, and place as quickly as possible a piece of p...hotogenic paper, instead of, or over the common paper. When C is again closed open F, and as the light will now fall upon the inner part of C, it will depict the objects there on the paper. By looking through G the progress of the operation may be ascer- tained. When done, remove the box into a dark room, and take it out of the frame.
The Calotype is closely allied in effect to the art we have now described. The Daguer- reotype is also dependent upon the chemical effect of light. These processes are however not connected with the properties of the chlo- rides, but rather of the iodides and bromides ; yet making an allowance for forestalling the consideration of those chemicals, it would be advisable to explain the arts connected with photography, and first the Calotype.
What to read after Chemical Experiments Illustrating the Theory Practice And Application of the?
You can find similar books in the "Read Also" column, or choose other free books by George William Francis to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
At the end D is a sliding tube, with a double convex lens E in the end of it, and a slide F which passes over it, and shuts off the light. To use the instrument, put a piece of common white paper between A and B ; then shut down B. Place the camera before the landscape, and move the tube D, until by looking through G a clear view of the prospect is seen on the paper. Now, without moving the box, or disarranging the focus, shut G and F open 16 122 C, and place as quickly as possible a piece of p...hotogenic paper, instead of, or over the common paper. When C is again closed open F, and as the light will now fall upon the inner part of C, it will depict the objects there on the paper. By looking through G the progress of the operation may be ascer- tained. When done, remove the box into a dark room, and take it out of the frame.
The Calotype is closely allied in effect to the art we have now described. The Daguer- reotype is also dependent upon the chemical effect of light. These processes are however not connected with the properties of the chlo- rides, but rather of the iodides and bromides ; yet making an allowance for forestalling the consideration of those chemicals, it would be advisable to explain the arts connected with photography, and first the Calotype.
What to read after Chemical Experiments Illustrating the Theory Practice And Application of the?
You can find similar books in the "Read Also" column, or choose other free books by George William Francis to read onlineMoreLess
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