bdjfkrkrk

4 ms·

1. 1.▲
   by bdjfkrkrk 6y ago

   UV is the one to worry about, fortunately it's easy to filter, for example most clear safety plastic glasses don't let it through.
2. 2.▲
   by bdjfkrkrk 6y ago

   There's a theory that one cause of myopia is lack of high intensity light due to indoor living: https://pubmed.ncbi.nlm.nih.gov/29371008/
3. 3.▲
   by bdjfkrkrk 6y ago

   I think it's about intensity. It's well known that powerful light in the morning from the sun is good for you. But it needs to be above a certain intensity.
4. 4.▲
   by bdjfkrkrk 6y ago

   Some of the first animals were RGB. Not sure why this feature was lost, probably too tacky for early Earth: https://upload.wikimedia.org/wikipedia/commons/4/42/LightRef... https://media.giphy.