You might have received an envelope like this and you are wondering what to do with it. Don't open it!!
You've got a single piece of paper impregnated with light sensitive chemicals similar to those used in cyanotyping. This process was the precursor to modern photography, discovered by the scientist and astronomer Sir John Herschel. In 1843 it was used by Anna Atkins to produce the first book made entirely of photographs. The white images on dark blue backgrounds gave the name to blueprints.

This non-toxic version of the original process can be used to produce some remarkable images (and can be part of some great science investigations).

Instructions:

Place the paper in a sunny spot and (quickly) place interestingly shaped items on top of the paper.
Leave it to expose for 4 or 5 minutes.


Developing and fixing your images couldn't be easier. Submerge the paper in water for 30 seconds to make sure that it's soaked through.
As the paper dries out you will see your pale positive image develop into a dark negative and you'll find its now fixed as the paper is no longer light sensitive.



See what other people have done and add your own image in the sunprint album