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Subject:Re: Cloudy headlight glass?
From:David Beierl
Date:Fri, 19 Jul 2002 17:43:43 -0400
At 05:36 PM 7/19/2002, Raimund Feussner wrote:
>Raimund
>P.S.: What makes sealed beam lamps "sealed"? Are the vanagon�s U.S.
>headlights sealed beams?

Sealed-beam lamps are literally that -- lamp, reflector, lens are all one
piece, hermetically sealed.  If they're regular tungsten, a crack in the
lens will immediately burn out the light.  If halogen, there's an internal
capsule that contains the pressurised gas so the halogen cycle works.

In 1936 they were an enormous improvement over what else was out there...

david

--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"