Path: utzoo!attcan!uunet!lll-winken!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!agate!bionet!csd4.milw.wisc.edu!mailrus!iuvax!silver!commgrp
From: commgrp@silver.bacs.indiana.edu
Newsgroups: sci.electronics
Subject: Where to get "black light" tubes?
Message-ID: <7200027@silver>
Date: 24 Jan 89 14:56:00 GMT
Organization: Indiana University CSCI, Bloomington
Lines: 23
Nf-ID: #N:silver:7200027:000:814
Nf-From: silver.bacs.indiana.edu!commgrp    Jan 24 09:56:00 1989




Where can I get "black light" (longwave ultraviolet) fluorescent-lamp
tubes??

When disco music was big in the '70s, they were available in every 
grocery store but now even the Edmund Scientific "Industrial" catalog 
doesn't have them except in super-expensive assemblies.  I'm looking 
for a 4-watt UV tube to replace the white tube in a Radio Sh** 
battery-powered fluorescent lamp, to be used to illuminate fluorescent 
cave formations.

(Actively growing white-calcite stalactites and stalagmites are 
usually fluorescent. They are blue under longwave UV, green when 
excited by a xenon strobe light.  The fluorescence/phosphorescence is 
believed to be caused by included organic-decay products.)

--

Frank Reid    W9MKV @ WA8YVR   NSS 9086    reid@gold.bacs.indiana.edu
PO Box 5283
Bloomington IN 47407