On the Economical Operation of Light Bulbs

[Dave760]

Note that you can run dimmable LED bulbs at less than full wattage, which can greatly extend the life of the bulb. So you can extend your savings even farther if that's your thing.

When I replaced all of my bulbs with LEDs years ago the savings on my electricity bill were significant. I have some lights that are on most of the time, and running them at lower wattages means I haven't had to replace one in over a decade.

 

[sablebrush52]

Most of my lamps are Arts and Crafts with mica shades, Art Nouveau with slag glass, or patterned color glass, with a couple of Art Deco pieces, all genuine, not reproductions. To imitate the warm color of incandescents the LED bulbs I use are 2700 kelvin. Daylight balance is about 5500 to 6500 kelvin depending on the manufacturer.

 

[huntertrw]

Another advantage of LEDs over CFL...

is that the light from LED bulbs is actually pretty, while that from CFLs is simply ugly!

Incidentally, I never purchased any CFL bulbs for just that reason.

 

[Briar Lee]

Light is NOT produced by heat.
I am yet to come across any middle school or high school science teacher who got it wrong, so Briar Lee must have forgotten what he was taught in his school science class.

The heat combusts the sun, or the element of a light bulb.

The light is the absence of darkness.

Men have sought more light, since he first opened his eyes.

I am sure and certain we all are born the perfect children of the Lord, whose first creation was light.

I have a friend who is a stone, cold atheist. One evening south of Winner South Dakota we watched the stars light up the sky and countless worlds appeared over a landscape as barren as the surface of the moon, below.

Knowing my Campbelite appreciation of such splendor he said to me, that’s all quantum physics, the product of a big bang.

I just said that either was a hell of an accident or else somebody intentionally lit the fuse.

And could you explain to be the process of the evolution of a ray of light, or the eye that can see the light?

 

[cshubhra]

Men have sought more light, since he first opened his eyes.

You are right. Then the men asked for help from the scientist / engineer types to produce the light

 

[OzPiper]

@Briar Lee
“Being of Scottish descent”
”we “English” “
My (Scottish) mother-in-law will be rolling over in her grave

 

[Briar Lee]

Light pollution is increasing with the availability of cheaper, more efficient light sources. About 30% 0f vertebrates and 60% of invertebrates are nocturnal. Light pollution is an environmental stressor that is quite recent in evolutionary terms and is a problem for astronomers as well. This could be minimized if we use LEDs that eliminate the blue component and provide a warmer, amber illumination.

Over a half mile North of our farm is the tiny little town that has been named Sexton, Hamlet, and finally Bug Tussle.

A couple of years ago the wealthy man who own a huge horse performance arena at Bug Tussle installed several of those 21,000 lumens 5000 K $100 street lights.

Bug Tussle is now visible from space.

We already had light pollution from Springfield, Bolivar, and Humansville, even Osceola and Clinton, all of which have extensive street lights.

Now every farm that gets a modern LED replacement for their old mercury vapor light add to that.

With each new light a few less stars are visible in our telescopes, or to the naked eye.

And with each new light, the people are a little less wandering in the darkness.

I’m on the side of more lights.

 

[Briar Lee]

You are right. Then the men asked for help from the scientist / engineer types to produce the light

Imagine the first man, maybe in his cave, his wife afraid of something outside and the man says it’s nothing, but she keeps on worrying.

If only he had a light, in the dark!

Scientists had to invent a candle, and striker to light tinder, before we could come out of the caves after dark.

History of Candles - Who Invented Candle?

www.historyoflighting.net

 

[Scottmi]

Turn an incandescent on and ... leave it on (added: Where practical.). I've got four, low wattage bulbs, headed for six years, this winter, which have made it through earthquakes and door slams. I read somewhere, an Edison original made a couple of decades or so. Someone else will need to back me up on this one.

there is a fire station somewhere in the US (Philly i think?) that is still running an edison original bulb to this very day.

 

[cshubhra]

Imagine the first man, maybe in his cave, his wife afraid of something outside and the man says it’s nothing, but she keeps on worrying.

If only he had a light, in the dark!

Scientists had to invent a candle, and striker to light tinder, before we could come out of the caves after dark.

History of Candles - Who Invented Candle?

www.historyoflighting.net

1. I am fairly certain (Although history is not my strongest suite) that archaic humans did not live in a societal structure that represents the modern American family (Husband, Wife and Kids)

2. The first light source used by humans was not a candle. It was a torch. I had assumed it originally as it is logical, but then I verified from the same website you quoted

 

[username]

there is a fire station somewhere in the US (Philly i think?) that is still running an edison original bulb to this very day.

World's Oldest Light Bulb That Still Works

The world's oldest functioning light bulb is 110 years old and still burning.

www.lightbulbs.com

 

[sablebrush52]

there is a fire station somewhere in the US (Philly i think?) that is still running an edison original bulb to this very day.

I believe it's in Livermore, California and is known as the Centennial Light bulb, been going since 1901.

 

[Briar Lee]

there is a fire station somewhere in the US (Philly i think?) that is still running an edison original bulb to this very day.

At the Florida Thomas Edison house they have late 1800s Edison bulbs still burning for the tourists.

There’s no nice way to say the truth, that Edison was a self promoting hustler.

Modern bulbs were invented with tungsten filaments about 1900 by somebody other than Edison.

But Edison did market the first practical light bulb using a carbon filament made of bamboo. Compared to later tungsten filament bulbs it was wildly inefficient and fragile and delicate. Over 90% was lost to heat, not light.

But if he made some with thicker bamboo carbon filaments they’d be dim but still beat a candle or lamp all to hell and last indefinitely, a hundred years or more.

Just the thing to show tourists or to leave burning in a fire station..

The men who invented improved lights were not seeking more light for mankind , but more dough for old number one.

Which is how the world gets illuminated.

Someday those $100 21000 lumens 150 watt LED street lights might become obsolete and a new invention make some new inventor wealthy.

 

[Briar Lee]

1. I am fairly certain (Although history is not my strongest suite) that archaic humans did not live in a societal structure that represents the modern American family (Husband, Wife and Kids)

2. The first light source used by humans was not a candle. It was a torch. I had assumed it originally as it is logical, but then I verified from the same website you quoted

There had to have been the first man.

And the first woman.

And bye and bye the sun set low in the West, and that man did not want to sleep alone, no he did not.

And it didn’t take long before the first woman told the first man that she was going to sleep inside someplace and he thought that was a good idea, he surely did.

And when children came to bless the home that mother wasn’t going to allow that man to burn torches around those precious babies.

 

[bullet08]

Let's talk about something truly useful. Toilet paper. The greatest invention of all time. Yellow pages and morning papers can't compete against soft yet strong well manufactured toilet paper. I haven't seen imports from China yet. OP might have the latest status.

 

[Servant King]

Just finished shopping for light bulbs on Amazon, so I felt it appropriate to chime in.

The narrative of LEDs and fluorescent light bulbs being "energy efficient" is distorted and specious. Focusing on that kind of minutia is counterproductive, and only serves to divert attention away from things that people should actually care about. That said, even if the energy use discrepancy was much larger, I would still always opt for incandescent bulbs, for no other reason than the high quality of light they give off. CFLs, apart from being toxic, give off harsh, ugly light (as do halogens), and even though LEDs are a slight improvement in that regard, they are still inferior. I can tell the difference, and there's no comparison, not by a long shot. Wifey and I have enough 40 and 60 watt bulbs to last us the rest of our lives, thanks to LAD (lightbulb acquisition disorder).

I want the interior of my home to look like a home, rather than like the interior of a warehouse. A little taste can go a long way.

 

[Buckeyestime]

I converted almost 40 can lights ina red room to LED’s a few years ago and have been pleasantly surprised. It is amazing how much cooler the bulbs are after being on for awhile.

 

[Bbailey324]

I believe it's in Livermore, California and is known as the Centennial Light bulb, been going since 1901.

Here is another link to the Livermore bulb. Apparently one can watch it real time.
Livermore's Centennial Light Bulb - https://www.centennialbulb.org/