Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.
I came across this when I visited the Imperial war museum in Manchester a couple of years ago, I’ve chosen to post it because of the process, technique used to document an image. I believe what is done is that paper will be covered with the formula (chemicals) and then the sock will be placed on top and exposed to UV light for a number of seconds. What comes from this is a print, sort of like a shadow of the object which was placed on top. This particular image I’ve decided to show could also be related to an x-ray. The image is very delicate and and subtle and the lonely sock can bring assumption of sadness and tragedy.