What are "all the colors of the rainbow"?

doi:10.1364/AO.30.003401

Paper

What are "all the colors of the rainbow"?

Published Aug 20, 1991 · Raymond L. Lee

Applied optics

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Abstract

Both folklore and theory imply that naturally occurring rainbows display a wide range of nearly pure colors. However, digital image analysis of color slides shows that the natural rainbow's colors are not especially pure and that the bow's background causes much of this desaturation.

Study Snapshot

Key takeawayThe colors of a natural rainbow are not particularly pure, as their desaturation is caused by the rainbow's background.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

What are "all the colors of the rainbow"?

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