Why do so many people still choose red night lighitng?
Reading the LED thread I was struck by how many people still use red light, and I was just wondering what the rationale for that choice was since the scientific consensus for decades seems to be that dim white light is far superior for visual acuity and takes only slightly longer to recover night vision than red.
This is compounded by the fact that a great many of the red light solutions out there, LED or otherwise, are radiating at 600nm to 650nm, where you will get all of the drawbacks like no detail vision and central blind spot with very few benefits with regard to preserving night vision. You want nothing shorter than about 700nm if you do go with red night lights.
Considering all of that (and leaving aside the topic of cyan lighting and active light amplification devices) I have always tended toward continuously dimmable white light in environments where I will need to switch between detail-oriented reading or working and using my night vision.
Last edited by lydanynom; 07-19-2010 at 07:41 PM.