On 06/07/10 10:57 AM, Nonny wrote:

"notbob" wrote in message
...
On 2010-07-06, George wrote:

You would be amazed at how much light you get from a good single LED
light.

I'm still amazed people are falling for this LED scam. Sure, LEDs
have their place and they can used to great effect in certain
applications, but completely replacing older incadescent in every
way is ludicrous. You see any LED car headlights? Spotlights?
Floodlights? Of course not. They just don't have the horsepower.

As for these silly overpriced head band lamps and $150 machined alum
AA flashlites, it's all bogus. Sure, they're better than total
darkness, but barely. I want some serious candlepower, not yuppie
outdoor sportsman chic.

nb


As I understand it, the primary limitation on light output from an LED
is the temperature of the LED in operation.

This is true. The semiconductor junction gets extremely hot and needs an
elaborate heat sink, but there's only so much area of the junction that
you can attach the heat sink to, so there's a limit to how much heat you
can dissipate.