Diana - I'm not of the opinion that it's enough light to do damage. :-) But speaking of the history of caving rope - I saw the transition of nylon parachute lines (550 cord) to dacron and later to kevlar. Dacron is still. Dacron has some fine qualities - viscous damping for instance. Not "stretchy" but not completely static either. Any ideas why (it seems that) it was never used for climbing or caving?
-WaV On Mon, Jun 6, 2011 at 11:33 AM, Diana Tomchick < [email protected]> wrote: > > PMI Lumi-Line http://tinyurl.com/4y2k658 > > > > PMI NiteLine http://tinyurl.com/3rylfml > > > > They used to also make 11mm and 13.5mm static nylon caving ropes of 100% > phosphorescent yarn that was quite bright. I still have a sample piece that > gives me a start when I encounter it in the dark. These products apparently > priced themselves out of the market. > > Besides, who wants to expose their nylon caving ropes to "extended exposure > to a light source" just so it will glow for 7 hours? Not good for the rope. > > Diana > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * > Diana R. Tomchick > Associate Professor > University of Texas Southwestern Medical Center > Department of Biochemistry > 5323 Harry Hines Blvd. > Rm. ND10.214B > Dallas, TX 75390-8816, U.S.A. > Email: [email protected] > 214-645-6383 (phone) > 214-645-6353 (fax) > > > > ________________________________ > > UT Southwestern Medical Center > The future of medicine, today. > > --------------------------------------------------------------------- > Visit our website: http://texascavers.com > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
