> >True, but one of the desired features of a personal LED marker is not >being so bright as to ruin a fellow paddler's night vision, so in that >application, the low luminance of an LED is an advantage. I'm way more interested in having a potential boatcrasher see me at a distance than I am at ruining my night vision. The restricted beam of the led, on one hand, means I can set it someplace where it won't get into my eyes. On the other hand, this restriction means that I can't be certain that the light is directed toward some boat out there.... >Also, one could diffuse the light and improve the angle of view somewhat by >lightly sanding the LED's epoxy lens. but at the expense of intensity. Still, that's preferable and It's always possible to use a multitude of LEDs. Here in NJ it seems as though all the Red traffic lights have now been replaced with very bright led arrays. I once had to build a strobe system to "freeze" a rapidly moving part. I used a bank of high intensity yellow leds which worked fine, and I got good photos on B&W film. Would some of these other colors work well at night? How about foggy conditions? Would Yellow, Orange, or Green be more noticeable than red? > For navigation markers on the kayak, high intensity LEDs are now available that could be >treated the same way. Nonetheless, I would still wear a headlamp at night for >signaling other watercraft. In Pennsylvania, Fish & Boating Comm. regs require only a visible source of light for human powered craft. That could even be a candle or a match. Legal, but I wouldn't trust my life to it.... The headlamp's a good idea since you don't have to give up a hand to deploy it. > *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.gasp-seakayak.net/paddlewise/ ***************************************************************************Received on Wed Mar 03 1999 - 13:29:58 PST
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