[VAC] Re: Old things Last!

[Jim Dunmyer <jdunmyer@xxxxxxxxxxx>]

Bob,
 It's probably a "carbon" filament, not "carbide".

Carbon was replaced with tungsten because:

1. you get more light per watt from tungsten, important if you're
running from battery power.
2. it's a much whiter light and more desirable for most people
3. I don't think that carbon handles shocks all that well compared to
tungsten, something that's important in a TT.

                                         <<Jim>>