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[PDF] I. On the chemical action of the rays of the solar spectrum on preparations of silver and other substances, both metallic and non-metallic, and on some photographic processes | Semantic Scholar

@article{HerschelIOT,
  title={I. On the chemical action of the rays of the solar spectrum on preparations of silver and other substances, both metallic and non-metallic, and on some photographic processes},
  author={John Frederick William Herschel},
  journal={Philosophical Transactions of the Royal Society of London},
  pages={1 - 59},
  url={https://api.semanticscholar.org/CorpusID:98119765}
}

1. Lest the title of this communication should induce an expectation of its containing any regular and systematic series of researches developing definite laws, or pointing to any distinct theory of photographic action, it may be as well to commence it by stating its pretensions to be of a much lower kind, its object being simply to place on record a number of insulated facts and observations respecting the relations both of white light and of the differently refrangible rays to various… 

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