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Subject:Re: Subject: light emitting diodes
From:Andrew Grebneff
Date:Fri, 23 Jan 2004 23:34:36 +1300

>  > >incidently, led brake lights turn on about 0.2 s faster than
>the standard
>>  >1157 bulb, which theoretically translates into about 18 ft
>greater
>>  >available stopping distance for following car.
>
>the biggest advantage i've seen to LED brake lights is that the
>light is bright and equal all the way across the tail light. next
>time you get behind a truck or car at night, and they hit their
>brakes, notice how the brightness fades as you go away from the
>bulb (in the center) toward the edges. that doesn't happen with
>the LED lights ... the brightness is equal from center to sides.
>makes it a whole lot easier to see from farther away.

LEDs don't have to warm up, so they blink on much faster. Likewise
bulbs cool down and fade out, whereas LEDs blink off.

Red LEDs are RED. Incandescent taillight bulbs shine through thin
lenses, and come across as dull orange-red, as can be witnessed when
viewing any car wit an LED center brakelight at night.
--
Andrew Grebneff
Dunedin, New Zealand
64 (3) 473-8863
<andrew.grebneff@stonebow.otago.ac.nz>
Fossil preparator
Seashell, Macintosh & VW/Toyota van nut
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