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Just Chat! / Re: Is there a universal moral standard?
« on: Today at 11:01:00 »
And the last three are not.
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New Theories / Re: How do we measure the energy of a photon?
« on: Today at 10:59:42 »
I sometimes think that "The Matrix" has done as much harm to rational thought as 2000 years of Papal authority.
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Just Chat! / Re: Is there a universal moral standard?
« on: Yesterday at 12:16:10 »
Spain (or Hawaii, or Norway, for that matter) is not China. China is opening new coal-fired stations every year. Trump is determined to support the US coal and oil industries.
https://www.statista.com/statistics/302233/china-power-generation-by-source/ is interesting and shows the huge dependence of China on coal.
210GW installed renewable capacity will supply about 5% of China's current demand for electricity. And if they replace ICEs with BEVs, that demand will more than double. Plus, of course, the energy (mostly coal and gas) required to build all those BEVs.
https://www.statista.com/statistics/302233/china-power-generation-by-source/ is interesting and shows the huge dependence of China on coal.
210GW installed renewable capacity will supply about 5% of China's current demand for electricity. And if they replace ICEs with BEVs, that demand will more than double. Plus, of course, the energy (mostly coal and gas) required to build all those BEVs.
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Physiology & Medicine / Re: Acclimating to temperature: how do we get used to the temperature?
« on: Yesterday at 12:06:55 »
....up to a point!
I recall an exchange on another forum where a woman asked how long it would take for her to acclimatise to having moved from Florida to Maine. One reply was "Never. Look in the shop windows - are they selling bikinis or fur coats?"
I recall an exchange on another forum where a woman asked how long it would take for her to acclimatise to having moved from Florida to Maine. One reply was "Never. Look in the shop windows - are they selling bikinis or fur coats?"
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New Theories / Re: Universal Utopia? What's The Universal Terminal Goal?
« on: Yesterday at 09:31:54 »evolution's implicit optimization objective.Wrong. There is no objective in evolution.
Evolution happens at random, and competition tends towards optimisation in any particular ecological (or economic) niche, by elimination of the less successful.
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Just Chat! / Re: Is there a universal moral standard?
« on: 14/01/2025 23:03:55 »You don't seem to follow news that coal power plants are dying.Not in China. And from now on, not in the USA either.
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Technology / Re: Does cold weather damage the batteries used in an EV?
« on: 13/01/2025 16:20:33 »Q: If electric cars are not good in extreme cold, then why do people keep buying Teslas in Canada?So given the choice, he sticks with ICE!
A: As the owner of two gasoline-powered pick-ups and the driver of a diesel at work, questions like this always make me laugh.
The problem of diesel turning to glue should have been solved years ago: JETA1 is essentially similar to diesel and works down to -40 C all day every day. Preheating diesel isn't beyond the wit of man, and as 40% of the energy of fossil fuel appears as heat once the engine is running, you can do a lot to reflow the exhaust over the catalytic converter if you need to.
The power required to heat the cabin is exactly the same regardless of the source, but as I pointed out in reply #1, it is "free" with an ICE but reduces the range of a BEV.
AFAIK Antarctic scientists use properly specified ICE vehicles with no real problems, and most Scandinavians seem to get around OK on ICE snowmobiles. There's much to be said in favor of aircooled engines at low temperatures, though aircooled diesels haven't found much favor in the light aviation business.
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Just Chat! / Re: The Office
« on: 13/01/2025 13:24:11 »
Early in my induction to the Civil Service I was taught that the most important note you can make on a file cover is "not for me".
But there is an old story of a file that was returned with a note "This was not intended for you. Please erase your initials and initial the erasure"
But there is an old story of a file that was returned with a note "This was not intended for you. Please erase your initials and initial the erasure"
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New Theories / Re: How close are we from building a virtual universe?
« on: 13/01/2025 10:22:04 »
Same old question: if an autonomous vehicle kills someone, who is liable?
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Just Chat! / Re: Is there a universal moral standard?
« on: 12/01/2025 15:54:02 »EV Curve Futurist reveals date that internal combusion will DIE in ChinaAnd the electric vehicles will be fuelled by coal, as at present. This makes sense as China has very little native oil, lots of coal, and a strong political incentive to energy independence.
Whilst the Nazis produced ersatz petroleum from coal, it is probably more efficient overall to use electricity as the intermediate, especially as useful idiots in the West are paying for the essential R&D for BEV transport.
Unfortunately as the Thatcher government destroyed the UK coal industry, this option is not available here.
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Just Chat! / Re: Is there a universal moral standard?
« on: 12/01/2025 15:49:04 »Our decisions in the past contributes to the hardships that we have to face now. Likewise, our decisions today will contribute to the hardships that we will have to face in the future.I don't think the decision to make Norway mountainous was a human one. However I agree that the decision to overpopulate the UK was.
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Just Chat! / Re: Where do I get my confidence to challenge established theories?
« on: 12/01/2025 15:39:34 »People need some break from routine activities.Such as kneeling before a parasite every 7 days?
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New Theories / Re: Where does quantization of energy of electromagnetic radiation come from?
« on: 12/01/2025 15:27:14 »
As I have said many times. Wherever did you get the idea that it might be?
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Technology / Re: Does cold weather damage the batteries used in an EV?
« on: 12/01/2025 15:10:56 »
The perceived difference in risk is due to the fact that ICEs don't spontaneously combust. The usual point of unintentional ignition occurs when a poorly-maintained vehicle has been running fast and hot, the fuel line comes adrift or the carburettor (remember those?) floods, and a backfire on overrun blows flames out of the air intake.
However well-maintained a BEV may be, early lithium batteries gradually developed in an internal short circuit and self-immolated entirely at random. The problem was occasionally reported in phones and computers but really hit the headlines when Boeing Dreamliners became a fire hazard. I think the problem has been largely eliminated, but the fact remains that a burning BEV is very difficult to extinguish and almost impossible to salvage, which is one reason that insurance premiums have doubled in the last few years.
However well-maintained a BEV may be, early lithium batteries gradually developed in an internal short circuit and self-immolated entirely at random. The problem was occasionally reported in phones and computers but really hit the headlines when Boeing Dreamliners became a fire hazard. I think the problem has been largely eliminated, but the fact remains that a burning BEV is very difficult to extinguish and almost impossible to salvage, which is one reason that insurance premiums have doubled in the last few years.
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Just Chat! / Re: Is there a universal moral standard?
« on: 11/01/2025 18:12:03 »Have you compared the situation with Norway?No comparison is relevant. Norway has 5 million people and 45 GW installed hydroelectric capacity to power almost everything. The UK is mostly flat and contains 70,000,000 people in about the same area.
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New Theories / Re: Where does quantization of energy of electromagnetic radiation come from?
« on: 11/01/2025 18:05:50 »
You will only broaden the spectrum from a large sample by having an inhomogeneous field or an inhomogeneous sample (chemical shift). The gyromagnetic ratio of the proton is fixed.
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New Theories / Re: Origin of magnetic force
« on: 11/01/2025 18:03:01 »This can be simply solved by adding indices or subscripted letters.Which he didn't do.
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Technology / Re: Does cold weather damage the batteries used in an EV?
« on: 11/01/2025 18:01:35 »1 KWh of energy used in the motor will move the car X amount of miles.Estimate 3 - 5 miles per kWh. It's not quite linear with battery capacity for a given car as the bigger battery weighs more!
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Just Chat! / Re: Where do I get my confidence to challenge established theories?
« on: 11/01/2025 10:22:12 »
Ah, my son, it all depends on what you mean by a year. Genesis is an allegory, and in the eyes of the Creator what you call a year is more like a nanosecond..... Why else would Man have this instinctive desire to prostrate himself before God every 7 days?
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Technology / Re: Does cold weather damage the batteries used in an EV?
« on: 11/01/2025 10:17:17 »
Battery efficiency generally decreases at low temperatures, the effects being summarised as an increase in internal impedance. Thus more energy is lost to internal heating when work is done. Oddly, when starting an internal combustion engine at low temperatures it sometimes helps to crank the starter motor a few times and wait: the warmer battery can now deliver enough current to spin the motor fast enough to start the engine.
Some early BEVs had a battery preheat cycle but I think battery performance now tolerates at least UK winter conditions without it.
You can estimate the cold weather range loss from the cabin heater specification. You generally need about 5 kW to keep the windows clear in a small car at 0 deg C, and maybe 20 kW on a really cold day. The advantage of an internal combustion vehicle is that hot air is an inevitable waste product, so thanks to increased air density, it actually goes further on a cold day!
Some early BEVs had a battery preheat cycle but I think battery performance now tolerates at least UK winter conditions without it.
You can estimate the cold weather range loss from the cabin heater specification. You generally need about 5 kW to keep the windows clear in a small car at 0 deg C, and maybe 20 kW on a really cold day. The advantage of an internal combustion vehicle is that hot air is an inevitable waste product, so thanks to increased air density, it actually goes further on a cold day!