Browsing by Subject "Camera obscura"
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Optics (2009-07-24)In this scientific journal, James Dinwiddie focuses on optics. He begins with a series of queries related to optics and expands the discussion to the compositon and humours of the eye as well as various experiments in ...
Sept ,  ; N/D (2009-07-28)Two letters to James Dinwiddie from William Mackintosh Esq. One letter dated Sept 1782 and one letter, date unknown.