My hat goes off to the OP. What a thread.
Quote:
Originally Posted by kyle3
Hilde I'm interested in this info- can you remember what the source was on it?
cheers-K
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K ratings vary on bulbs because the K rating is for the spectrum of a black body radiator, a theoretical object that doesn't exist. The spectrum of a flourescent light is the product of variations in materials, ballasts, degradation, etc. The spectrum does not look like a normal, it has peaks and valleys all over.
Flourescent light:
A black body:
