Mr. Brown and Squeaks return from a nature walk and explore the art of cyanotypes, a historical photographic process. Mr. Brown explains how to create a cyanotype using special paper, sunlight, and water, and delves into the science behind the process, highlighting the chemical reaction that forms Prussian blue. The video also covers the history of cyanotypes, mentioning Sir John Herschel and Anna Atkins, and provides a practical demonstration of making cyanotype art.

What materials are needed to create a sun print?

• Paint, paper, and sunlight

• Special paper, water, and sunlight

• Ink, water, and paper

• Canvas, paint, and water

Who was the first person to develop the cyanotype process?

• Thomas Edison

• Louis Daguerre

• Sir John Herschel

• Anna Atkins

What was significant about Anna Atkins' use of cyanotypes?

• She created the first color photograph

• She used them to illustrate a book, the first to include photos

• She invented a new type of camera

• She used them to document historical events

What is the key chemical reaction in the cyanotype process?

• The creation of Prussian blue from sunlight exposure

• The formation of ink from water

• The conversion of paper to canvas

• The transformation of sunlight into electricity

What happens to the parts of the paper that are exposed to sunlight during the cyanotype process?

• They turn dark blue

• They turn white

• They remain unchanged

• They become transparent