Notebook Q

Made:: 1844-1845

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Science Museum Group
© The Board of Trustees of the Science Museum, London

Notebook Q.

Details

Category:: Photographs

Object Number:: 1937-5555

Materials:: paper (fibre product)

Measurements:: overall: 198 mm x 170 mm x 12 mm,

type:: notebook

credit:: The National Media Museum, Bradford

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Parts

Notebook Q. Page 39

Notebook Q. Page 39, which includes entries for September 20-22 1840 where Talbot sets out the basis for the Calotype process. Realising the significance of his discover, he cut out the name of the chemical Galic acid, just in case the album should fall into the wrong hands