: one. Red light makes reading charts and LCD-based too hard to read for
: me. Also, it makes no sense to me to use red light when the instrument
: lights are white anyway. The human eye is most sensitive to green light,
: so you need less of it to make things visible.

My aircraft has red cabin illumination, but with the dimmer it can be turned
*way* down. Between that and the tiny green LED light, you can even make out some
semblance of color.

I think I read somewhere that the red/green debate is that red light damages
night vision the least. That's a fact. Turns out, what's more important to
preserving night vision is the *amount* of light. Since the eye is most sensitive to
green, it can be at a lower level than red and still be useful.

My completely anecdotal experiences have bourne this out.

-Cory

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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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