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Unit B
Tech Exploration

Cyanotype impressions

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1
Botany in blue

Placeholder pour Anna Atkins, “Polypodium Phegopteris, British”, Cyanotypes of British and foreign ferns, 1853.Anna Atkins, “Polypodium Phegopteris, British”, Cyanotypes of British and foreign ferns, 1853.
Anna Atkins, “Polypodium Phegopteris, British”, Cyanotypes of British and foreign ferns, 1853.

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From 0:58 to 4:08
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2
Where art meets chemistry

ang1-unitb-techexploration.mp3


 Cyanotype photography is a camera-less technique that involves laying an object on paper coated with a solution of iron salts before exposing it to UV light and washing with water to create stunning white and Prussian blue images. [...] When ferric ammonium citrate or ferric ammonium oxalate is mixed with potassium ferricyanide, it becomes sensitive to UV light. These chemicals can be painted onto paper or fabric and left to dry in a dark room. Once dry, objects can be arranged onto the paper and placed in the sun. The UV rays from the sun react with the chemicals on the paper to create the recognisable cyan-blue background. Where the paper has been covered with an object it will remain white. Once the chemicals are rinsed off with water, fixing the print so it is no longer sensitive to the sun, you are left with a beautiful print.
Laura Bagnall, Kew Royal Botanic Gardens, 2023.
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Placeholder pour cyanotypescyanotypes
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Culture note

The word cyanotype /saɪˈænətaɪp/ comes from the Greek “kyanos”, meaning “dark blue”, which is also the origin of cyan, the name of a blue pigment used in painting. The suffix -type means “impression” or “mark”, so cyanotype literally means “blue impression”.
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Communication

1-A
What are your impressions of the artwork? How does it differ from a botanical drawing?
2-A
Why is this technique called cyanotype? What is the value of this technique?
3-A
Compare this process with photography. If necessary, go online for further research.
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Science

1-B
What are your impressions of the artwork? How does it differ from a photograph?
2-B
List the chemicals and materials needed for the technique, and explain how it works.
3-B
Describe or draw the steps of the reaction process.
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Over to you!

Communication

Design a magazine page showcasing cyanotype as an art form.

You may explore the history of cyanotype, its use in photography or printmaking, and/or tell the story of Anna Atkins as a pioneering artist. Write short articles, select striking visual elements and plan the layout. Your page should draw readers in and make them want to learn more!


Science

Design a magazine page explaining the technique of cyanotype.

A famous magazine has decided to devote a special issue to cyanotype. Design a magazine page focusing on this technique. Make it as clear as possible so it can be understood by people who are not experts in chemistry!
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