28 Sep
2012
28 Sep
'12
1:15 p.m.
Yes, one can put a green filter over a Nixie tube.
Then you'd
have...surprise! A Nixie tube with a green filter, not a "green Nixie
tube".
Some nixie tubes (small 'n', I ahve no idea who made them) had an orange
envelope, preu=suambly to increase contrast. IIRC there is a green line
in the neon spectrum, but it is weak. I guess you could try filtering out
everything else and make a very dim green nixie tube that way.
-tony