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This happens for very small droplets, such as a fine mist, or just after a rain shower when the air is just moist. As the droplets get larger, gravity distorts their shape and the rainbow vanishes.

The Ellia Adore is a plug-in aroma diffuser that delivers a fine mist of scent ... which cycles through a range of rainbow hues to soothe you further (you can choose to pause on any of the ...