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my guess this is now off-topic, sorry.
I didn't mean flicker when it starts, my bad.
All lights flicker its just a matter of whether or not the eye sees it. Incandescents flicker 60x a second, FL tubes near the end of their lives when the ends get dark and the draw more power are slowing down. This might be different with CFLs and tubes with electronic ballasts.
"glare" as opposed to being "bright". hmmmm, trying to think of a great way to describe it. You can have a light that is bright and sharp like a halogen, metal halide and another that is dull (glare probably isn't the correct term here) (FL, cold cathode, low pressure sodium) with them both being giving off the same amount of light. There is a qualitative difference. I guess the more proper terms should be dull and sharp. You can be bright and not necessarily have glare.
After age 40 you need think more "sharp" lighting were it is important and use cfl for more background. At least that is how my lighting teacher described it.
Its just something to remember.
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