a band of the visible light spectrum that has a shorter wavelength and produces higher energy than other colors of light: occurring in sunlight and emitted by electronic devices that use LED technology.
Also Blue Light .American History, Usually Disparaging. a member of a faction of the American Federalist party considered disloyal for opposing the War of 1812: so called from the claim that they flashed blue light signals to alert the British to the presence of blockade runners.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use blue light in a sentence
Just then the father of the other family stepped closer to our car to wave goodbye, and in doing so he blocked the blue light.
Through a front window I saw the blue light of the running projector, making silhouettes of the children.
My gaze followed the blue light, watching it grow dimmer with distance.
Generally speaking we want to expose ourselves to red light in the morning and night and blue light during the day.
This wonderful—and free—app controls your screen and reduces blue light colors after the sun goes down.These 3 Apps Will Help You Sleep Better, Feel Great, and Eat Well | Dave Asprey | December 18, 2013 | THE DAILY BEAST
On the dahabeeyah, which began to look as if it were a long way off and were receding from her, shone a red and a blue light.Bella Donna | Robert Hichens
Slowly this ray paled, and its golden radiance faded to a pale blue light.Honey-Bee | Anatole France
A box near the coxswain a feet was opened, and a blue-light taken out.The Floating Light of the Goodwin Sands | R.M. Ballantyne
Here and there were those that entered a shaft of pale-blue light that somehow outshone the sun.Astounding Stories, May, 1931 | Various
Pale Blue—light part of Starling's quill feather for wings, pale yellow silk for body, pale yellow dun hackle for legs and tail.The Teesdale Angler | R Lakeland