Re: [Paddlewise] Running Lights

From: Dave Kruger <kdruger_at_pacifier.com>
Date: Fri, 03 Aug 2007 14:21:38 -0700
Pamvetdr_at_aol.com wrote:

> I must admit to slight confusion here.  What is the difference between 
> fluorescent tape and highly reflective tape? 

Pam, the fluorescent tape typically takes UV light in and puts it back out 
in the visible spectrum, making for vibrant, brighter colors, hence Hi-vis 
orange, red, and yellow use that method to achieve a greater intensity. 
But, the advantage is minimal at night, inasmuch as the usual light sources 
(spotlight, etc.) do not have much (any) UV in them.

OTOH, the highly reflective tape (viz., SOLAS) reflects visible light 
_directly_back_to_the_source_ in such a way that if your boat is hit by a 
spotlight, the reflection is greatly enhanced for the person holding the 
spotlight.  This makes you enormously more visible to a searcher equipped 
with a searchlight.  Ordinary reflective tape spreads out the reflected 
light over a wider arc on return, so the source does not get nearly as much 
  visible light back.

A strip of SOLAS along your gunnels and on your arms, and on your PFD front 
and back is good marking for times when a light source is on you.


-- 
Dave Kruger
Astoria, OR
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Received on Fri Aug 03 2007 - 14:21:49 PDT

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