Hi Wagner,

At 06:57 PM 7/26/99 -0400, you wrote:
>Just a curiosity about lamp filaments:
>Airplane crash investigation take a special attention to panel lamp
>filaments.  They can almost identify if a lamp was on or off at the
>crash moment.  Alarm and "red lamps" are important to understand why an
>airplane crashed.  A lited lamp has a hot filament that breaks it easily
>at a crash impact. A cold filament is more difficult to break... well...
>it helps.

I don't really know the right answer to this myself,but I seem to recall
from a crash investigation TV program I saw,that it was exactly the other
way around: Lit filaments tend to stretch rather than break. Cold filaments
tend to break. It kinda made sense to me, but I can also see arguments in
favor of what you said.

Sean


>
>--------------------------------------------------------
>Wagner Lipnharski - UST Research Inc. - Orlando, Florida
>Forum and microcontroller web site:  http://www.ustr.net
>Microcontrollers Survey:  http://www.ustr.net/tellme.htm
>
|
| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
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