Dimming them not only directly saves power, but also dramatically increases their longevity, and also increases their efficiency (saving even more power). :)

You think it's unreasonable that nighttime brightness has doubled (actually 1.5x) over the last ten years?

Again, you make my point for me. We know that taking women's rights away will fix the collapsing birth rate. You complain but offer no alternative that hasn't been tried and failed.

Modern Slashdot. Technical details? How dare you include details! Stupid nerd!

It works. Nothing else anyone has tried does.

Like I said, it won't happen before liberal society collapses and you just demonstrated why.

It's been tried and doesn't work. Heck, Britain's fertility rate was several times higher when the masses lived in slums and worked in mills until they died in an accident or from respiratory illness.

If you want to increase birth rates you need to stop educating girls beyond what's required to be a mother. But no liberal country can do that so they will die out instead.

Maybe they've all been chat bots for a long time. Although the McConnell bot seems to be broken.

I'm confused why you're confused why I think that. Of course they would not have put in more lighting if everything was sodium.

Wow I'm glad you have it all figured out and have good luck. Regardless of type they are engineered to fail. Big Clive has confirmed that over and over again his analysis of LED lighting. I've lost all kinds of LED lights not just the bulb style. But yeah you're right. I'm doing it all wrong!

So "not that different" translates to "less than half" by the time you finished the paragraph?

Did you miss the phrase "raw bulb efficiencies", or were you under the impression that streetlamps are raw bulbs and nothing more?

Where I live I doubt anyone saved much money going to LED street lights. For the first few years LEDs burned out quite often. Then with the power savings, they put in way more street lighting (part of why cities are getting brighter and brighter). Personally I much prefer sodium lighting. It's so much easier on my eyes.

Around the home, LEDs are things I love to hate. They are just engineered to fail and will never last the 20 years some claimed. I am constantly replacing LED screw-in bulbs. Sometimes the COBs themselves fail because they are over driven. Often the potted driver fails. Have I really saved any money with LEDs? Who knows.

You're talking about PEPC uptake of bicarbonate and CO2 in soil moisture. It's only like 1-2%, and it's not "soil carbon", it's CO2 from the atmosphere dissolved in water. Same uptake whether the soil is humus-rich or bare sand.

How do you plan to handle achieving 1000W/m2 of lighting *before* losses?

I think realistically you'd need orbital mirrors for that.

Also, someone keeps stealing my water. I'll leave a glass of water out overnight, and the next time I check it, it's lower. I swear I'm not making it up, it's happened multiple times.

The funny thing is there's not that much difference in the raw bulb efficiencies - LPS is slightly lower, but not dramatically. But LPS have more fixture losses (the bulbs are omnidirectional), ballast losses, inefficient dimming (and only to slight degrees) for morning/evening, and so on. LED's high CRI (vs. LPS's virtually nonexistent CRI) can sometimes mean you can use less light, too. In practice, you can use something like 30-40% the electricity with LED streetlamps as with LPS, despite the raw bulb figures not being very different.

But no question that LED is much worse for astronomy. LPS was almost a pure spectral line, very easy to exclude. White LEDs use phosphors and deliver a broad spectrum white (apart from the source's blue peak). Pretty much the worst spectrum you could have apart from incandescent. : It kind of sucks that we have to use phosphors in the first place, as they're wasteful - but unfortunately, LEDs have a "green gap"; in the green spectrum, existing tech has a dramatic drop in output and efficiency (and corresponding increase in price) - while green is what our eyes see best. There's still ongoing work to fill it, but it's been a slog. If we could skip the phosphor and just have a mix of different coloured LEDs, the fixtures would be even more efficient, and it would be much easier for astronomers to filter (esp. if the frequencies were standardized)

that benefit will never happen

You know that arctic apples and innate potatoes both use the exact same PPO silencing tech, and have been on the market for years? Innate potatoes also contain less asparagine, the amino acid that turns into the carcinogen acrylamide when frying.

Do also remember that while these are "GMO", they're not transgenic. They simply have genes shut off - no new genes.