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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 pa

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

flowless 8y ago
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.
jsty 8y ago
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 https://www.bbc.co.uk/news/education-44565320
swsieber 8y ago
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/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4148276/