Date: 01 Mar 97 18:42:15 From: Jean-Francois Mezei <"[nospam]jfmezei"@videotron.ca> Organization: SPC Followups: 1 2 3
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It seems that on a clear day, on can see the lights from an incoming airliner on approach that is still quite far. I assume that those are not your everyday headlight you would put on your car. What sort of power (watts) do these beasts consume ? How long would they normally last before they are replaced ? Is there a special material/glass used to allow it to operate in extreme conditions and most importantly, fairly rapidly changing temperatures without cracking/failing ? Are they designed solely "to be seen" or do they also help pilots see what is out there ?