The book of science

Tom Sharp

Mexico City, Stockholm, ManchesterAndrés Manuel del Río, Nils Gabriel Sefström, Jöns Jacob Berzelius, Henry Enfield Roscoe elements


Atomic number 23

Stuff with color

Henry Enfield Roscoe was the uncle of Beatrix Potter. Aside from that, he was the first to isolate pure vanadium metal.

Pigments absorb all but the color they reflect; mix them together to absorb all colors. When you mix cyan, magenta, and yellow pigments, you get black. When you overlap red, blue, and green lights, you get white. Isaac Newton recombined colors from a prism back into white light with another prism to show that color was a property of light.

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