Quote:
Originally Posted by Dave A
Does anyone remember a trick using a neon transformer to test a tube for gas? I saw it once years ago and the interior lit up purple...gas.
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No pictures of the method used, but this page should give a good idea:
http://www.theodoregray.com/Periodic...NobleRack.html
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Last edited by AdamAnt316; 12-02-2013 at 04:13 PM.
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