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Prussian Blue
(
johncarlosbaez.wordpress.com
)
9 points
by
chmaynard
3 months ago
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2 comments
DaveZale
3 months ago
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The synthetic dyes industry made Germany very rich in the 19th century. Turning coal tar into many brilliant colors enables simple fabrics to be alluring and valuable.
ycombinatrix
3 months ago
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