Where does black fall on the color spectrum? A color scientist explains
Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...
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One in 30 people can see 'invisible' colors that no-one else can
Tetrachromats can differentiate between more colors within the range of light visible to humans ... but the colors she saw so vividly were invisible to them. Tetrachromacy involves the light ...