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The Lightbulb Went Out.
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Feb 8, 2024 09:28:22   #
Wasabi
 
sippyjug104 wrote:
Sadly, how soon America forgets. A major reason why America was able to win the fight in WWII was because America had an abundance of light and heavy manufacturing plants that could be quickly retrofitted to produce military needs.

Over the years, American manufacturers have either moved their facilities off-shore or have outsourced and imported their products. Government regulations, increased cost of labor, and reduced number of qualified factory workers have left America in a pathetic state of readiness. Ask any young adult if they want to work in a heavy manufacturing plant like a foundry casting iron and see what they say. I suspect that they would rather be a TikTok social influencer with a Fans Only website.
Sadly, how soon America forgets. A major reason wh... (show quote)


If the situation does not change the will have to do their influencing in mandarin.

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Feb 8, 2024 09:47:38   #
Jimmy T Loc: Virginia
 
Canisdirus wrote:
Incandescent light bulbs are very inefficient...which is why they run hot.
They push out 90% infra red light (which you perceive as heat) and 10% light you can perceive.

That's why a 6 or 10 watt LED can be just as bright...and not hot to handle.
They push out 100% light that your eye can perceive.

No reason to ever have an incandescent anymore.


They do work well in a small pump house . . . .

I remember in the fifties during the Summer my Grandparents didn't want to sit in the house at night and visit.
Instead, we would sit on the porch and rock and swing in the cool summer breeze.
A single small light inside would provide enough light for safe navigation and for chatting.
I remember them saying that they didn't want to be inside with those "Hot Lights".
That would also account for their using low-wattage bulbs.
Those memories also make me . . . .
Smile,
JimmyT Sends


PS: Feit makes a pretty reliable, and accurately rated for color and lumen bulbs.

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Feb 8, 2024 10:09:05   #
avflinsch Loc: Hamilton, New Jersey
 
Canisdirus wrote:


No reason to ever have an incandescent anymore.



Actually there is - for some individuals

My oldest friend (I have known her for over 60 years) had a series of traumatic head injuries which left her with flicker induced seizures. Fluorescent lights naturally flicker, so she can't use those, dimmable LED lights also flicker and those also trigger seizures. I take her to all sorts of estate sales and flea markets - she is always looking for lamps which still have the old incandescent bulbs. We buy them, she keeps the bulbs, and I rewire and resell the fixtures.

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Feb 8, 2024 10:12:12   #
Carl S
 
Needed to replace some three-way bulbs that used to cast about $5.00 each. LED three-ways not cost about $15,00 each, but I take pleasure knowing that I'm saving the planet!

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Feb 8, 2024 10:14:31   #
BebuLamar
 
avflinsch wrote:
Actually there is - for some individuals

My oldest friend (I have known her for over 60 years) had a series of traumatic head injuries which left her with flicker induced seizures. Fluorescent lights naturally flicker, so she can't use those, dimmable LED lights also flicker and those also trigger seizures. I take her to all sorts of estate sales and flea markets - she is always looking for lamps which still have the old incandescent bulbs. We buy them, she keeps the bulbs, and I rewire and resell the fixtures.
Actually there is - for some individuals br br My... (show quote)


I have dimmable LED light that doesn't flicker.

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Feb 8, 2024 10:53:16   #
avflinsch Loc: Hamilton, New Jersey
 
BebuLamar wrote:
I have dimmable LED light that doesn't flicker.


You might not be able to see it, but the majority of them have a barely perceptible flicker.
If you did a high speed video you would see it.

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Feb 8, 2024 11:06:58   #
BebuLamar
 
avflinsch wrote:
You might not be able to see it, but the majority of them have a barely perceptible flicker.
If you did a high speed video you would see it.


I did and not seeing it.

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Feb 8, 2024 13:30:01   #
PhotogHobbyist Loc: Bradford, PA
 
Canisdirus wrote:
Incandescent light bulbs are very inefficient...which is why they run hot.
They push out 90% infra red light (which you perceive as heat) and 10% light you can perceive.

That's why a 6 or 10 watt LED can be just as bright...and not hot to handle.
They push out 100% light that your eye can perceive.

No reason to ever have an incandescent anymore.


That is fine for light and to redue wattage consumption. If I cannot get incandescent bulbe, if the ight in my garage dooe openeer ever burns out, it will not work. Instructions for the opener state the mechanism will not function properly if any CFL or LED bulbs are used. Hopefully my current bulbs will outlive the machinery.

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Feb 8, 2024 13:39:41   #
JBuckley
 
A good thought.
The light from a "bulb" is only a secondary product. Edison must have realized that when he first started working with the light bulb.

[Heat ]is the main bi-product of this wonderful invention.

Where would film and movie projectors be without the light from a bulb?

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Feb 8, 2024 13:57:06   #
ggttc Loc: TN
 
Watts the problem?

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Feb 8, 2024 14:35:32   #
BebuLamar
 
PhotogHobbyist wrote:
That is fine for light and to redue wattage consumption. If I cannot get incandescent bulbe, if the ight in my garage dooe openeer ever burns out, it will not work. Instructions for the opener state the mechanism will not function properly if any CFL or LED bulbs are used. Hopefully my current bulbs will outlive the machinery.


Which brand and model of your opener? It strange if the bulb has anything to do with it. Most opener would work just fine without the bulb.

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Feb 8, 2024 21:49:11   #
bikinkawboy Loc: north central Missouri
 
HRPufnstuf wrote:
Light Emmitting Diodes are direct current devices - hence the word diode. They allow electricity to flow only one way. In order to use them in an AC circuit, the 110 volt AC has to be converted to 5-12 volt DC.

And there's the rub. In your house EACH LED "bulb" has circuitry to first reduce the voltage, then convert it with a half wave or full wave rectifier or equivalent. And those parts, small as they are, consume current, but not often too conservatively (translate: heat).

That's why LEDs, which are expected to last 10-20 years, sometimes fail much sooner. The diode still works, but the conversion circuitry breaks down. Worst offenders are bulbs which hang down (ceiling lights, porch lights) because the base of the bulb doesn't cool sufficiently. Upright bulbs in table lamps and such can dissipate the heat better. Yeah, I know it's not much heat, but those are small parts, and can't take much heat.

Now outdoor low voltage lighting is a little different. The power supply at the wall reduces the voltage to 12 volts before it goes into the wire. A DC circuit would lose voltage the longer the wire, but AC stays the same the entire length. Therefore those bulbs only need the AC to DC converter, and since they are outdoors, they rarely fail due to heat.
Light Emmitting Diodes are direct current devices ... (show quote)


Good info! As a kid, our old tube type Montgomery Ward Airline TV put out enough heat that we kids left a bunch of our paper drawings on top of it for a while and it got so hot that the varnish on the wooden cabinet shrunk and cracked, looking everything like the dried mud in the bottom of a pond. It wasn’t hot enough to roast wieners but it was close.

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Feb 9, 2024 00:14:20   #
TriX Loc: Raleigh, NC
 
BebuLamar wrote:
My question is why a 100W LED needs serious cooling and the 100W incandescent doesn't?


The switching power supply in the base and the LED are likely limited to 85 deg C max.

I prefer the lighting in my home to be 2700K - higher temps remind me too much of office space and commercial buildings. The issue is that we use dimmers on most lights, and most LEDs get cooler as they’re dimmed, producing a “Moonlight” look instead of the “candlelight” look I prefer. After lots of looking, I found a series of Phillips bulbs called “Warm Glo” that actually get warmer when dimmed, just like an incandescent. They’re available in everything from regular bulbs to PAR floods to candelabra base specialty bulbs. We changed all the bulbs in the house, and it immediately made a notIcable difference in our electric bill. I also uses some 250W equivalent LEDs (5000K) for outdoor floods and some 150W equivalent floods for indoor plant lighting. The downside is I have a closet half full of incandescent bulbs and Par30 floods that I’m unwilling to throw out, especially the Halogen floods which have a lovely continuous spectrum high CRI light.

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Feb 9, 2024 07:28:08   #
ELNikkor
 
I bought few incandescents before they went off the shelves. Wanted them for old-time sake; the glow and warmth they gave. That said, both incandescent and florescent are extremely dangerous, being explosive with sharp glass shards everywhere when dropped. I've been replacing my florescent bulbs in my cellar with the new LED shop lights.

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Feb 9, 2024 07:35:06   #
BebuLamar
 
ELNikkor wrote:
I bought few incandescents before they went off the shelves. Wanted them for old-time sake; the glow and warmth they gave. That said, both incandescent and florescent are extremely dangerous, being explosive with sharp glass shards everywhere when dropped. I've been replacing my florescent bulbs in my cellar with the new LED shop lights.


LED is better but I think the goverment outlaw the incandescent isn't the right thing to do. Let the people decide what they want to use.

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