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From: stew@harvard.ARPA (Stew Rubenstein)
Newsgroups: net.consumers
Subject: Re: long lasting lightbulbs
Message-ID: <334@harvard.ARPA>
Date: Sun, 27-Jan-85 23:27:18 EST
Article-I.D.: harvard.334
Posted: Sun Jan 27 23:27:18 1985
Date-Received: Tue, 29-Jan-85 07:07:18 EST
References: <-28400@cadovax.UUCP> <6100001@hpfclv.UUCP> <255@oliveb.UUCP> <155@phri.UUCP>
Organization: Aiken Computation Laboratory, Harvard
Lines: 20

> > Bulb life is more proportional to the number of times it is turned off and
> > on than burn time.  A bulb on a flasher can burn out after only a few hours
> > of operation.
> > 				Jerry Aguirre @ Olivetti ATC
> 
> Yeah, I know that's the theory, but it is also real bad to burn a bulb
> upside down.  I have a light the hallway of my building which is on 24-hrs
> a day, hanging upside down, and burns out what seems like every other day,
> but in reality is about every month.
> -- 
>    phri!roy  (Roy Smith)

When I was doing theatrical lighting, we had certain instruments which
took bulbs *designed* to be burned upside down.  If burned base-down, they
burned out much more quickly.  I guess the makers of light bulbs figure
this is too difficult a concept for the average consumer to deal with...
-- 
-----------------------
Stew Rubenstein     UUCP: ihnp4!harvard!stew
Harvard Chemistry   ARPA: stew@harvard