A reconsideration of Roger Bacon's theory of pinhole images

  title={A reconsideration of Roger Bacon's theory of pinhole images},
  author={David C. Lindberg},
  journal={Archive for History of Exact Sciences},
  • D. Lindberg
  • Published 1970
  • History
  • Archive for History of Exact Sciences
Some time ago in this periodical, I published an analysis of the theory of pinhole images from antiquity through the thirteenth century.1 One of the theories discussed was that of Roger Bacon, drawn from the Opus maius and De multiplicatione specierum the only two works, so far as I then knew, where Bacon considered the problem. In the meantime I have had occasion to examine another work often attributed to Bacon, entitled De speculis comburentibus ; to my surprise, I discovered that this work… 

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