The human eye can see ‘invisible’ infrared light - The Source - Washington University in St. Louis
The human eye can see ‘invisible’ infrared light - The Source - Washington University in St. Louis
Science textbooks say we can’t see infrared light. Like X-rays and radio waves, infrared light waves are longer than the light waves in the visual spectrum. But an international team of researchers co-led by Frans Vinberg, PhD, (left) and Vladimir J. Kefalov, PhD, has found that under certain condit...
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I've always been able to see the IR light from those depth sensing cameras used for facial recognition on laptops, as well as those sensors old android phones used to use to detect if they're face down on a table or up to your ear.
It just looks like dark red to me. My science teacher in highschool told me it's not common but some people have a wider spectrum of light thats visible to them than others. This special gift from nature has not meaningfully impacted my life in any way, shape, or form.
I had just assumed those were supposed to be visible. Like the lights the Xbox Kinect had.
But if they aren't, that's annoying lol. Same deal with hearing the high pitch frequency old CRTs would emit.
The CRT thing is pretty common I think, you just lose your high frequency hearing as you age.
The high pitch squeals just move to inside your head.
Ugh this has become very true as I’ve aged :’(
I lost it at a Cypress Hill concert
Yeah, I was using it as an example of annoying things fitting around the same niche lol.
Its not intentional as much as it is a cost savings
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.