in the case of a dark blue, the question rises whether the ground is pure indigo or pure logwood, or a mixture of both, or whether Prussian potash-blue is not present, &c. For this purpose ...
The wall is painted with a blue pigment that chemists made for her, inspired by George Washington Carver’s patented Prussian Blue.Credit ... was surprised by a dark blue form that filled ...
ALTHOUGH prussian blue has been known since 1704, and has long been an important pigment, its chemistry has never been satisfactorily explained. The whole subject is surprisingly confused in spite ...
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