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From: rpw3@rigden.wpd.sgi.com (Rob Warnock)
Newsgroups: sci.electronics
Subject: Re: Turning Lights On
Message-ID: <93543@sgi.sgi.com>
Date: 26 Mar 91 03:27:38 GMT
References: <14740@mcdphx.phx.mcd.mot.com>
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Reply-To: rpw3@sgi.com (Rob Warnock)
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Organization: Silicon Graphics, Inc., Mountain View, CA
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My understanding from something I read a few years back was that the
lifetime of an ordinary incandescent bulb was inversely proportional
to the 12th (!) power of the voltage. So that if you run a 130v bulb
at 117 volts, you get 3.5 times the life expectancy. (This applies to
continuous operation, only.)


-Rob

-----
Rob Warnock, MS-1L/515		rpw3@sgi.com		rpw3@pei.com
Silicon Graphics, Inc.		(415)335-1673		Protocol Engines, Inc.
2011 N. Shoreline Blvd.
Mountain View, CA  94039-7311