What color is black? Is it one color or many colors combined to “look black”? Black is the absence of all reflective colors, and when the three primary colors (red, yellow, and blue) are combined in just the right way, they give off the appearance of black. We set off to find out more about […]
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Chromatography with black markers and forensics of ink on a note
vielversprechend Bücken da drüben the black marker Sagen Bremse
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