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No, it is not. I said, in case you do not get it, that the light penetrates the water better due to its high frequency, and that is all there is to it. It also arcs rather than using a filament, so more of the energy is light , not heat. This is why I really hate to even discuss anything on these lists. My inclination is to tell you to go show me how its done, and actually, I think I will. You go figure it out, and then let us all know the real story. Been there , done that , you have not and you don't have a single freaking piece of dive gear that I would use to wipe my ass with, but you have all the answers. You go ahead an keep assuming I am an idiot, it seems to work well for most other divers out there, and makes them feel better. I'll keep doing what I do. Mark Melendez wrote: > > At 07:06 AM 7/25/99 , kirvine@sa*.ne* wrote: > > 18 watts. The reason I used the "..." for terms like > "bright" is that we > are talking the "effect" that we call "light" in water, > chief. I just > explained what is really going on, and that is the reason > you can "see" > further and "think" the light is brighter. The rest is > horsehit. > > Also know that they are putting most of their energy out in > the form of > light, not heat, so you can turn them on out of the water > without > worrying about meltdown. > > Just for the sake of argument... The big reason that you've got more > light chief is because you have an 18 watt HID bulb that's putting out > the same amount of light as a 100 watt tungsten bulb - 80% of its > energy becomes light, the opposite is true of tungsten. Not so much > because you've got a higher color temp but because you've got more > brightness. If color temp was the only factor you could simply put a > dichroic or CTB filter on a quartz lamp to achieve the same effect. > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Mark Melendez > melendez at bigfoot dot com > http://www.bigfoot.com/~melendez
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