In what year did Sir John Herschel invent the cyanotype process?
Answer
1842
The text explicitly states that Herschel invented the distinctive cyanotype process in 1842.
Related Questions
What Greek words did Herschel derive the term 'photography' from?Which chemical did Herschel discover could effectively dissolve unexposed silver salts to permanently fix an image?In what year did Sir John Herschel invent the cyanotype process?What common trade name became universally known for sodium thiosulphate, Herschel's fixing agent?What insoluble pigment results in the distinctive blue color of a finished cyanotype print?What essential conceptual structure, foundational to later film photography, did Herschel introduce alongside the term 'photography'?What types of salts formed the chemical basis of the cyanotype process, differentiating it from silver-based portraiture chemistry?Which chemical is one of the two primary components Herschel used to coat surfaces for the cyanotype process?Herschel viewed his photographic experimentation primarily as what kind of problem to solve?Besides his work in photography, Sir John Herschel succeeded which famous relative in astronomy?