Mailing List Archive

Mailing List: cavers

Banner Advert

Message Display

Date: Mon, 08 May 2000 16:01:38 -0700
To: Joel Markwell <joeldm@mi*.co*>
From: "Kevin Connell" <kevin@nw*.co*>
Subject: Re: HID physics was Re: another stupid question..LOL
Cc: cavers@cavers.com
LoeJ:

The answer to your question is, no, HID probably will not improve zero viz.

Oh, yeah,  and Fuck Off.

At 06:24 PM 5/8/2000 -0500, you wrote:
>on 5/8/00 5:17 PM, Trey at trey@ne*.co* wrote:
>
> > Joel, these things just have a higher frequency, shorter wavelenth so
> > they penetrate further through water, as could be expected from any
> > light at that end of the spectrum.  The result is that you can "see"
> > further in its beam, and the particulate does not backscatter so badly
> > as with lower frequencies and longer wavelengths.
> >
> > As Dr Rose and the Trout suggest, this is why we use them in Leon Sinks
> > and Weenikulla.
> >
> > HID is basicly ultra violet.
>
>Trey,
>
>And as I was asking Trout et al, the point is not that they will allow one
>to see in zero-vis conditions, as has been suggested, but that they improve
>vis in low-vis conditions beyond that of a normal lighting system. Would
>that be accurate?
>
>Later,
>
>JoeL


----------------------------------
  Kevin Connell <kevin@nw*.co*>

  NW Labor Systems, Inc
  http://www.nwls.com



----------------------------------

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]