Personal computing discussed
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Damage wrote:Bam! 2.5W LED that looks like a 40W vintage bulb.
uwsalt wrote:The banning and restricting of incandescent bulbs is needless regulation at best and idiotic at worst. LED lights are preferable for most normal home applications and most people are more than happy to replace their old incandescent with LEDs when possible.
But there are useful applications for incandescent bulbs, even with the advent of improving LED lights, and it's annoying that those bulbs will be increasingly difficult to find.
cphite wrote:It's been especially hard to find three-way bulbs and bulbs that work well with a dimmer.
Damage wrote:Heh. I have a monster blog post or two coming up on LED bulbs. The ongoing innovation is insane.
Damage wrote:This debate just took a wild turn:
Bam! 2.5W LED that looks like a 40W vintage bulb. . . .
They come in different shapes and sizes now, too, including this:
2400K for a warm glow. We don't need a ban to make the switch when LEDs get to be this good.
ludi wrote:cphite wrote:It's been especially hard to find three-way bulbs and bulbs that work well with a dimmer.
I still have a pair of those halogen double-bulb thingies in the dining room for this reason. An incandescent, when dimmed, goes to a lower color temperature which gives it "that look". A dimmed LED, even when the fixture handles the process correctly, just goes to a lower brightness level, which works for some applications but looks garish if the goal was mood lighting.
cphite wrote:
It's been especially hard to find three-way bulbs and bulbs that work well with a dimmer.
just brew it! wrote:ludi wrote:cphite wrote:It's been especially hard to find three-way bulbs and bulbs that work well with a dimmer.
I still have a pair of those halogen double-bulb thingies in the dining room for this reason. An incandescent, when dimmed, goes to a lower color temperature which gives it "that look". A dimmed LED, even when the fixture handles the process correctly, just goes to a lower brightness level, which works for some applications but looks garish if the goal was mood lighting.
Hmm... you could actually make an LED bulb that changes color temperature as it dims if you used RGB LEDs instead of white.
just brew it! wrote:ludi wrote:cphite wrote:It's been especially hard to find three-way bulbs and bulbs that work well with a dimmer.
I still have a pair of those halogen double-bulb thingies in the dining room for this reason. An incandescent, when dimmed, goes to a lower color temperature which gives it "that look". A dimmed LED, even when the fixture handles the process correctly, just goes to a lower brightness level, which works for some applications but looks garish if the goal was mood lighting.
Hmm... you could actually make an LED bulb that changes color temperature as it dims if you used RGB LEDs instead of white.
ludi wrote:BlackDove, lighting sources, even imperfect ones, are commonly described by their general perceived hue relative to a blackbody radiator. While this may not be quite as precise as a Ph.D. in optical physics like yourself would prefer, they will continue to suffice for this discussion, since a person who runs around the Home Depot lecturing people on the precise meaning of "Spectral Power Density" generally doesn't get invited to many parties.
UberGerbil wrote:Yeah, I laughed a bit when these showed up in an email a while back.
ludi wrote:I have not. I'm on their mailing list because I purchased specialized LEDs to replace some automotive bulbs (didn't want to ever again have to take apart a bunch of screws and clips to replace some very problematic bulbs, and also was able to boost the lumens of my parking/running lights 10x). I have been in a couple of recently-opened restaurants that have these sorts of bulbs (I checked closely because I was curious, and sure enough they were LED) but I have no idea if they were these exact ones nor do I have any info on their longevity. One of their videos on YouTube suggests using these to replace bathroom vanity bulbs and claims 30,000 hours, but those claims are always a bit suspect. The gold-tinted in particular would probably be particularly flattering for decorative purposes (perhaps not so much for detailed lady-work in bathrooms), and they can be dimmed (1:00 mark).UberGerbil wrote:Yeah, I laughed a bit when these showed up in an email a while back.
Did you try any, and if so, how well did they work? I've been tempted to try something like that for the bathroom vanities, but for $15-20 bulb, I worry whether the LED 'strands' will have a commensurate life span.
BlackDove wrote:ludi wrote:BlackDove, lighting sources, even imperfect ones, are commonly described by their general perceived hue relative to a blackbody radiator. While this may not be quite as precise as a Ph.D. in optical physics like yourself would prefer, they will continue to suffice for this discussion, since a person who runs around the Home Depot lecturing people on the precise meaning of "Spectral Power Density" generally doesn't get invited to many parties.
Im not at Home Depot though. Im on a tech forum with supposedly tech savvy people who apparently dont know anything about the garbage products they buy.
Learn how stuff works instead of ad hominem.
just brew it! wrote:....The fact that you jump into every thread that mentions LEDs to post your anti-LED diatribes has pretty much guaranteed that most people are going to ignore your posts on the topic (at best), or respond with snark (at worst).
....And yes, some of the stuff I've read as a result of your posts has even been interesting/educational. But you come off as so militantly anti-LED that it is rather difficult to take you seriously.
Mr Bill wrote:I'm guessing those filaments would have the LEDs in parallel.