From: shannon stoney (sstoney@tnaccess.com)
Date: 06/19/01-12:21:43 PM Z
Jeffrey wrote:
>
> Please do not be confused.
>
> Keep in mind that the bulbs labeled with a BL are not the black lights
> referenced. Dick refers to the dark black lights commonly used in head
> shops and popular in the '60s to illuminate fluorescent posters and the
> like. The BL lamps produce a very bright white looking light that
> contains a lot of UV (ultra violet light).
Now I'm really confused. Should you buy black lights, like in head shops,
or something else called BL? In Dick's book he says "BL (Black Light)" as
if they are synonymous.
>
> Aquarium and plant lights give off a lot of UV, but the BL lamps are
> usually available in much higher outputs. To compare the output of
> typical fluorescent lamps, divide the listed wattage by the listed
> length. It is the wattage per area that will represent the flux (light
> intensity). Since the width (diameter) of the lamp is insignificant
> relative to the length, the length can be used as area.
This makes sense.
--shannon
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