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Fellow, Tech. divers

+++++++++  From: Dave Drake   +++++++++++++++
I am most impressed with an American Cave Light that I'm told has a 3 hour burn
time with a 50 W bulb.  ...etc.
+++++++++  end snip  ++++++++++++++++++++++++

My question is why are so many technical divers interested in dive
lights, WATTS.   WATTS have nothing to do with bightness.

If I remember my college physic's,   light brightnes is measured in
Candle power  or Lumins.   If a diver what to know how bright a light
is he and/or she needs to compare the Candle Power and/or Lumin rating.

Can someone help me out here???? 

Thanks in advance.

Gary McGee
Detroit, MI   USA    (GMcGee1@TC*.pt*.fo*.co*)
PADI Instr. # 4522
IANDT ADV. Deep Air & Tech. EANx

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