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Strange that the share pf renewables has beem steadily increasing

Bulbs with a shorter lifetime are also a lot more efficient, because they run hotter.

That's why that one bulb that's been burning for a 100 years in a firestation somewhere is only just glowing.


Heat is literally inefficient by definition - it's spent energy which hasn't been converted to visible light.

And hotter light bulbs produce proportionally more visible light (higher luminous efficacy) than cooler ones.

An electric heater at 100C is an incandescent light source with 0% luminous efficacy :)


Hotter _incandescent_ bulbs (e.g. tungsten wire, halogen, etc.) produce more light than cooler ones, but the heat is still wasted. That's why such bulbs are going away.

With non-blackbody bulbs (e.g. florescent, LED, etc.) the light is produced directly. Any extra heat is still wasted, but we can (and do) engineer to reduce it, thus making the bulbs far more efficient.


European cities are small? You don't hear about many chases in Berlin/Paris/London, do you?

Berlin and Los Angeles _city_ both have 3.8 million residents. The greater Los Angeles Metropolitan area has 18 million residents. The greater Berlin Metropolitan area has 6 million residents.

It's not only dense but the scale is far larger than most European cities. Only Asian and South American cities outclass the insanity that is LA. Until you've been there it's hard to appreciate the scope of it.


The Greater LA areas has 34k square miles of area. Germany, the whole country, has 128k square miles. In other words, the LA area alone is a quarter the size of all of Germany.

A huge chunk of that is national parks and deserts. It's not all inhabited. Only about 25% is classified as urban with the overwhelming majority of that being concentrated in Los Angeles and it's surrounding cities.

https://en.wikipedia.org/wiki/Greater_Los_Angeles#Urban_area...

This isn't a size measuring contest. I think Europeans forget how _young_ America is. That's the only unique part of this country. Give us a few thousand years and we'll be on par.


No it was a population density measuring contest and you were trying to argue that greater LA was more dense than greater Berlin, without defining greater Berlin in a rigorous way. The size of Germany relative to greater LA was brought up to attempt to put the population densities in perspective.

Measuring methods are also very different. I've had this argument before here.

Looking at the population of greater Melbourne has you looking at suburbs like Werribee, Frankston, Boronia, etc., which everyone would consider as a part of Melbourne (suburbs, outer, but very much a part of the core).

On the flip side, the "Seattle Metropolitan Area" consists of:

Mt Rainier. Bainbridge Island. Glacier Peak in Mt Baker Snoqualmie National Forest. Mt Vernon. Olympia. North Bend.

No Western Washingtonian is calling any of those locations "a suburb of Seattle".


Well, and we always have to shit on the younger (and now bigger) brother

You'd be surprised to learn that geopolitics do not actually mimick family disputes

[flagged]


Oh come on.

If you wanna say Muslims (all those "dirty foreigners"), then spit it the fuck out.

Also completely off topic that comment.


Three pages, including comments. Always amazing to see that.

Of course you can go down there? That's literally the lower limit of design voltage?

Below 2,5V is usually when you don't wanna use them anymore


only if you want them to lose capacity fast and become spicy pillows in your lifetime

2.5V is the absolute minimum typically mentioned in spec sheets, 2.8V and above is perfectly fine.

I wish that would work when you don't have internet.

Had to fall back to old school bluetooth, and like 1 MB/s to share a video with a friend.


It does, and it works to windows machines too

Does it use internet to open up the connection? Because I vividly remember the share screen not even finding the other device (and vice versa). Could also be extremely slow internet being worse than no connection at all

Open source userspace? Google Play Sevices?

Čech?

The work hardening when machining titanium is also just brutal, worse than stainless


Wasn’t there also some issue with water when the A-12 or SR-71 was being built? Like the local water treatment plant started fluoridating the water or something, and it completely screwed up the production process?


"Completely screwed up the production process" seems a bit overstatement: with the budgets at stake for these projects, adding a distillation step to the water isn't some massive financial burden.


Fair enough! I think the primary issue was that for a while, no one had any idea why previous processes just stopped working. But my recollection of this is obviously hazy at best.


Yes. They had to scrap tons of parts until they figured it out.

iirc they had to add the impurity back IN to get the process working again.


Yeah, the UK is probably one of the best places for offshore wind, and they're building gigantic fields.

And compared to what Hinkley Point C is gonna cost... solar and wind is basically for free


With the big * of solar being fairly predictable, and wind not. You can be bereft of wind for weeks.


In a given spot yes, the UK continental shelf is pretty big though.


It is, but you can look at https://grid.iamkate.com/ and see wind go up and down depending on the weather.


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