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When the color to be examined is a mixed one, for example, logwood-blue, with prussian blue or indigo, the color of the logwood is first destroyed by dilute acid, the stuff washed and treated with ...

Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, ...

Recent excavations at Domus Aurea, the former imperial residence of Roman emperor Nero, have yielded remnants of a rare blue pigment that hint at the palace’s former glory. When Nero’s ...

Archaeologists excavating near the Colosseum found a rare chunk of Egyptian blue pigment dating back about 2,000 years. Photo from Simona Murrone and the Colosseum Archaeological Park Across the ...

she asked later. Prussian Blue, named for the distinctive color of Zyklon B residue in the Nazi gas chambers, gained widespread mainstream media attention and performed covers of hate rock anthems as ...