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The EU is banning 8K TV's!!!

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nctnico:

--- Quote from: james_s on November 05, 2022, 07:34:18 am ---
--- Quote from: tom66 on November 04, 2022, 10:29:30 pm ---Unfortunately, a bit of both.  We need to drastically cut CO2 emissions, but also work to mitigate the worst effects.  That means building flood defences, security for energy grids against extreme temperatures (no Texas again, please), insulating existing homes, building *new* homes to be zero carbon,  look at genome engineering or at least crop selection to be more rugged to extreme heat/longer droughts -- all of that stuff.

There's no scenario in which we don't reduce emissions and only mitigate the badness and survive the long term in any reasonable manner.  It'd be a bit like the lung cancer patient smoking 40-a-day after their tumour was excised.

--- End quote ---

Unfortunately I think that's totally impractical and wishful thinking. Even if you could build all new houses to be zero carbon and people could still afford them, there is still the inconvenient fact that a huge chunk of pollution comes from the third world and developing nations and they are many decades behind other regions. I was surprised to learn recently that as much kerosene is used for lighting still as is used in air transport. Kerosene lamps are still a daily use device in some parts of the world. There are vast areas that don't have electricity, let alone heat pumps.

--- End quote ---
Yes. If you compare China to the EU you'll see that China has tripled CO2 emissions between 1990 and 2020 while the EU has reduced the emissions by about 30% in the same period. The real challenge is going to make sure the upcoming countries are going to skip fossil fuels.

coppice:

--- Quote from: nctnico on November 06, 2022, 08:21:20 pm ---Yes. If you compare China to the EU you'll see that China has tripled CO2 emissions between 1990 and 2020 while the EU has reduced the emissions by about 30% in the same period. The real challenge is going to make sure the upcoming countries are going to skip fossil fuels.

--- End quote ---
Those two things are not unconnected. A lot of the reduction in Europe is simply heavy industry moving to China. Same CO2 emission, different place.

SiliconWizard:

--- Quote from: coppice on November 06, 2022, 08:23:56 pm ---
--- Quote from: nctnico on November 06, 2022, 08:21:20 pm ---Yes. If you compare China to the EU you'll see that China has tripled CO2 emissions between 1990 and 2020 while the EU has reduced the emissions by about 30% in the same period. The real challenge is going to make sure the upcoming countries are going to skip fossil fuels.

--- End quote ---
Those two things are not unconnected. A lot of the reduction in Europe is simply heavy industry moving to China. Same CO2 emission, different place.

--- End quote ---

Yes, we've been shifting our pollution far away. Which makes it worse actually, since the way those countries produce energy is still a lot more polluting than the way we do. So for a given amount of required energy, by delocalizing production, we've been increasing worldwide pollution.

MK14:

--- Quote from: BrianHG on November 06, 2022, 11:50:14 am ---So the screen resolution does not affect the current draw.

--- End quote ---

Thanks for starting the thread.  It spurred me on, to read about these issues.

What you just said (I ONLY quoted the bit I mean), is both completely 100% right, and NOT, at the same time.  Let me explain.

Thought experiment, to explain.  As I understand it.  If you have a 4k panel, and measure the overall power draw.  Then, keeping the panel dimensions the same, magically change it to a (current technology) 8k TV panel.  Although you are perfectly CORRECT, the panel/backlight will continue to use the SAME power.
Unfortunately, you will notice (from my background reading), the display brightness, drastically (badly) drop in intensity.

So, in order to force the overall picture brightness, back up to what it was, with the original 4k TV panel.  It will be necessary to considerably increase the brightness of it.  Which will usually result in a significant increase in power consumption.

This is because the smaller pixels (8k rather than 4k ones, fitting in the same overall panel dimensions), will in effect, have much bigger borders (relatively speaking).
I.e. Although they can make the pixels ever smaller, the borders, between the pixels, sadly, remain the same size (as I understand it).  Probably due to technological limitations, at the moment.
So, proportionally, that forces (scientifically or mathematically speaking), the space for the smaller pixel to shine through, disproportionately smaller.

Or in other words.  The display brightness, for a given amount of power on a 4k panel, will dramatically fall (be much less efficient), as so much light is lost/wasted, by the borders between the pixels, which HAVE NOT become smaller, because of current technology limitations.

N.B. That was my understanding, by reading up on it.

nctnico:

--- Quote from: coppice on November 06, 2022, 08:23:56 pm ---
--- Quote from: nctnico on November 06, 2022, 08:21:20 pm ---Yes. If you compare China to the EU you'll see that China has tripled CO2 emissions between 1990 and 2020 while the EU has reduced the emissions by about 30% in the same period. The real challenge is going to make sure the upcoming countries are going to skip fossil fuels.

--- End quote ---
Those two things are not unconnected. A lot of the reduction in Europe is simply heavy industry moving to China. Same CO2 emission, different place.

--- End quote ---
I disagree. A) heavy industry moved to China / Asia during the 70's and 80's. B) If it is due to moving heavy industry, then China's CO2 emissions would have increased by only 30%. The latter isn't the case. What is the primary cause is the increased living standard in China.

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