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Re:Sleep Scientist Warns Against Walking Through Life 'In an... by bloopernova on Saturday June 23, 2018 @11:40AM (#17381738)
You're absolutely right, our body most definitely reacts in different ways to different wavelengths of light.

A specific green has been shown to help reduce pain. [1] 525 nm seems to be the magic wavelength in this particular case.

I'm a chronic acute pain sufferer. I'd love for something as simple as an array of green LEDs to help with my pain. I keep meaning to get a large breadboard, a bunch of LEDs, and make such a device.

I wonder what effects other wavelengths might have? Would lights help sleep if they matched sunset darkening to night time through purple and indigo? It's fascinating stuff.

https://www.ncbi.nlm.nih.gov/pubmed/28092651

Re:Sleep Scientist Warns Against Walking Through Life 'In an... by flowless on Saturday June 23, 2018 @12:18PM (#17381920)
I have an amibilight built around WS2812 LED strip and esp8266. I use it to display a colorful rotating gradient during a day and as a night light with red color.

Small Haskell program using reactive-banana-automation feeds simple nodemcu firmware every second with UDP packets. It's quite easy to build RGB light this way as only one signal wire is required.

Re:Sleep Scientist Warns Against Walking Through Life 'In an... by swsieber on Saturday June 23, 2018 @05:53PM (#17383656)
Red light helps cells heal [1], ultraviolet light can kill bacteria. I'll find sources and measurements.

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4148276/

Re:Sleep Scientist Warns Against Walking Through Life 'In an... by jsty on Saturday June 23, 2018 @01:31PM (#17382301)
There was an interesting piece [1] on the BBC a couple of days ago about research finding exposure to Cyan might help keep us awake.

[1] https://www.bbc.co.uk/news/education-44565320