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The bulbs *do* blow, almost exclusively, when you turn them on. I was taught to close my eyes if the zero vis (or no light) situation is lengthy. At 12:52 AM 5/9/2000 -0500, Jeff Disler wrote: >At 06:47 PM 05/07/2000 -0400, Mark Hanes wrote: > >OK here goes.... > > > >If you are poking around in small silty restrictions and find yourself > >in a white out situation...would it be better to keep your eyes open or > >closed from a psycological standpoint?? > > > >I always close my eyes as this doesnt let me know I cant see..and I > >think helps me to concentrate on the line without the mental > turmoil... > > what do you think?? > >When I'm diving under these type conditions, I will usually just shut off >my light and leave my eyes open. This assuming that one already knows the >direction of travel and are on the line heading in their desired direction. > >Of course if the vis is not truely zereoed, then some navigational >information could be missed by either closing your eyes or shutting down >the primary. > >Why have my light on when it not usable, I'd just might as well save the >battery power for when and if the conditions clear (I'll check from time to >time) or beyond the sumps. >I have heard many suggest that shutting down a primary light during a cave >dive is not a wise thing to do. It is true that powering up a bulb is >probably the most likely time to have a bulb failure. Perhaps the higher >wattage bulbs used by some have a greater chance of bulb failure during >start up. I however usually only dive with a 12 or 20 watt bulb and have >never had one blow during switching on. > >Regards JD > > > > > >"SILT HAPPENS"JD JEFF DISLER > SAFE CAVING NSS 26000 ---------------------------------- Kevin Connell <kevin@nw*.co*> NW Labor Systems, Inc http://www.nwls.com *I* moved your cheese. ----------------------------------
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