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Showing rainbow colors that shift with angle
A soap bubble floats past—pink, then green, then blue, all in one second. An oil slick on wet pavement shows rainbow bands. A peacock feather changes color as you move. This is iridescent: colors that shift depending on the viewing angle.
The word comes from Iris, the Greek goddess of rainbows.
See how iridescence appears in bubbles, oil, feathers, and insects
Test your understanding of iridescent in context
How does iridescent differ from luminous?