Science

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The human eye can see ‘invisible’ infrared light - The Source - Washington University in St. Louis (source.wustl.edu)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 6 points 6 months ago

Thats mostly because the vast majority of IR lights and led's also emit visable light. To get an ir light to not also emit within the visable light spectrum is much more expensive.

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