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Date: Thu, 3 Aug 1995 16:15:35 EST
From: "R_LAROCQUE (418) 775-0792" <r_larocque@AM*.QC*.DF*.CA*>
Subject: Re: Dive Lights
To: "Private_User@fo*.co*" <Private_User@fo*.co*>
Cc: "techdiver@terra.net" <techdiver@terra.net>


>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???? 

Since most high-power dive lights all use halogen bulbs or halogen
bulb-reflector assemblies, Watts are directly related to light output.  One
thing that is rarely mentionned is the angle of coverage, my 75W 12deg MR-16 is
very similar in apparent brightness to a Dive Rite 150W head...

Richard

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