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Photographic hypersensitization - Wikipedia
- https://en.wikipedia.org/wiki/Photographic_hypersensitization#:~:text=Preflashing%20is%20not%20strictly%20a%20hypersensitizing%20technique%20but,a%20small%20increase%20in%20the%20unexposed%20fog%20level.
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Photographic Emulsion - an overview | ScienceDirect Topics
- https://www.sciencedirect.com/topics/materials-science/photographic-emulsion
- The fogging exposure can be effected with light or chemically by using a nucleating agent. The latter is essentially a fogging agent capable of permitting the selective development of imagewise exposed internal image silver halide grains to form a direct-positive image. Emulsions of this type are called reversal emulsions (see Section 1.14.2.4.3).
US3615528A - Photographic silver halide emulsion …
- https://patents.google.com/patent/US3615528A/en
- The sensitivity of light-sensitive photographic silver halide emulsions can be increased and the fogging can be decreased if the chemical ripening of that emulsions is performed in the presence of mercapto alkyl quaternary salts or acetothioalkyl quaternary salts of the following formula WHEREIN R represents alkyl with up to six carbon atoms; two R radicals of the same nitrogen …
Photo Emulsion and Exposure Troubleshooting Tips. - Hunt The …
- https://huntthemoon.co.uk/blogs/news/photo-emulsion-and-exposure-troubleshooting
- It could be that the light source is not bright enough (or the wrong kind of light waves). Or is not getting long enough. Or both! Without enough light and for too short a time the emulsion does not fully bond and go hard during exposure. If your emulsion is totally washing out or falling off, your screen is definitely under exposed.
Light sensitive emulsion | NFSA
- https://www.nfsa.gov.au/preservation/preservation-glossary/light-sensitive-emulsion
- Light sensitive emulsion. Any emulsion capable of recording an image due to the action of light. At the heart of the photographic system is the ability to convert light into density. In conventional photography this is achieved by using the light energy to break silver halides into silver metal and the halide. The quantity of silver metal produced provides the density in proportion to the …
Fogging (photography) - Wikipedia
- https://en.wikipedia.org/wiki/Fogging_(photography)
- Fogging in photography is the deterioration in the quality of the image or the negative caused either by extraneous light, other electromagnetic radiation, radioactivity or the effects of a processing chemical.It is seen either as deposition of silver or dyes across all or part of the image unrelated to the original exposure. It can be confused with chemical staining that can be …
PHOTOGRAPHIC SILVER HALIDE EMULSION HAVING AN …
- https://www.freepatentsonline.com/3615528.html
- The sensitivity of light-sensitive photographic silver halide emulsions can be increased and the fogging can be decreased if the chemical ripening of that emulsions is performed in the presence of mercapto alkyl quaternary salts or acetothioalkyl quaternary salts of the following formula wherein R represents alkyl with up to six carbon atoms; two R radicals of the same nitrogen …
Photographic Emulsion - an overview | ScienceDirect Topics
- https://www.sciencedirect.com/topics/physics-and-astronomy/photographic-emulsion
- A combination of sensitive and insensitive photographic emulsions is used to improve the accuracy of measurement of the specific energy loss of relativistic nuclei. The method is applied to the determination of the charge spectrum of the primary cosmic radiation at geomagnetic latitude λ = 30° and results in nearly complete resolution between neighboring elements up to Z …
Light Sensitive Emulsion - Caroline List
- https://carolinelist.com/light-sensitive-emulsion/
- The Light sensitive emulsion paintings are a series of ‘Memory Scapes’ which explore landscape and history, memory, time and place. These mixed media works fuse light sensitive photo emulsion with traditional oil painting on canvas. Using wet photography processes and working from analogue negatives, I have exposed these black and white memories onto canvas, fused …
US3717468A - Light-sensitive supersensitized silver …
- https://patents.google.com/patent/US3717468A/en
- a new supersensitizing combination particularly useful for a green-light-sensitive gelations silver halide photographic emulsion comprising at least one carbocyanine dye of the general formula 1 and at least one mono- 0004dye of t methine cyanine dye of the general formula 2, said combination being so selected that at least one substituent on a nitrogen atom in a …
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