vocabulary #3
prism: a cut piece of clear glass(or plastic)with two opposite sides in the shape of a triangle or other geometric shape.
spectrum: a band of colors produced when light goes through a prism.
primary color: red,green,or blue;mixing these colors can produced all the colors of the spectrum.
primary pgment: magenta,cyan,yellow;material with anyof these colors absoves one primary color of light and reflects the other two.
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