BLUE LIGHT Definition & Meaning

blue light

[bloo lahyt]

Phonetic (Standard)IPA

noun

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.
American History, Usually Disparaging.��Also Blue Light 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.

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51�Թ� History and Origins

Origin of blue light¹

First recorded in 1810–15

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Example Sentences

Examples have not been reviewed.

Smoke particles in the atmosphere scatter blue light more, leaving oranges and reds dominant.

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Now the retired director of photography is fielding orders for the BlueChirper after teaching himself how to make a circuit board that can emit the annoying sound and flash a blue light.

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He had initially attracted the attention of officers while sitting in the vehicle on Moorclose Road in Workington, before then heading south towards Whitehaven where the blue light pursuit began.

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I don’t want that blue light on me.

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"Just as blue sunlight scatters in the Earth's atmosphere and makes the sun look slightly less blue, light from a strong blue, rich white street light enters your eyeball, scatters around in your eyeball and causes a sort of gauzy veil of glare," Lowenthal explained.

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blue lias blueline

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