AINewsnow

The Book Made by Sunlight and Seaweed

In 1843 Anna Atkins began publishing a book of British seaweed with no engravings in it. She laid each specimen on paper coated with iron salts, set it in the sun, and rinsed the sheet in water. Where the algae had blocked the light, the paper stayed white. Everywhere else it turned blue. Cyanotype…

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  1. 2026-11-06 01:25 · DEV Community — AI
    The Book Made by Sunlight and Seaweed

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