On Jan 29, 2009, at 11:32 AM, [email protected] wrote:
>> >> > An oversimplfied definition is that they are a bunch of little lights > grouped together to give off a larger light. > they used to need three different diodes each giving off a portion of > the spectrum (via different electric currents) to get a whitish > light, now they have combined it into one with a blueish chip as the > base( thus the blue-grey tint). That's why they aren't so expensive > now and do last a lot longer than either of the two aforementioned > alternatives and are more robust. But they eventually wear out, > putting out less and less light, rather than the "pop" of an > incandescent but the tint doesn't bother me on those as much as the > newer car headlamps with their Halogen/Xenon/ > can'tseewhentheystareyouintheface-on bulbs > Steve >>> > > > > LED's, question. New York State has recently converted our traffic lights to LED at a cost of countless millions of dollars. Part of the pitch was that as the LED lights burn out they will only have to change one of the small LED's rather than the entire light. Is this true? I whole heartedly concur with your "car headlamps with their Halogen/Xenon/can'tseewhentheystareyouintheface-on bulbs" observation. Why bother with traffic infractions and other dangers when it's a lot more fun to play "drug interdiction"! John Callahan [email protected] If there are no dogs in Heaven, when I die I want to go where they went.ยจ --Will Rogers extreme positive = (ybya2) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to Low End Mac's iMac List, a group for those using G3, G4, G5, and Intel Core iMacs as well as Apple eMacs. The list FAQ is at http://lowendmac.com/imac/list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/imaclist?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
