Re: Learning point.
Take a microfiber cleaning cloth, and use the robot arm to clean the solar panel.The weight a such a cloth is quite low, around 2g for a piece with a surface of 100 cm²
3261 publicly visible posts • joined 9 Jun 2017
Take a microfiber cleaning cloth, and use the robot arm to clean the solar panel.The weight a such a cloth is quite low, around 2g for a piece with a surface of 100 cm²
And I strongly disagree with it. As long as the kinds of plastic used can be recycled or a biodegradable, I see no problem with those plastics.
As often, oversimplifying the problem has one goal: making buy us new things to replace the old ones. And now it is to 'save the planet' (as if the planet could disappear in a near future), when the real question is about human kind survival.
I saw for instance people replacing plastic cups with cups made in bamboo, because 'bamboo is natural' (as arsenic or curare by the way, but it's another topic). Sounds nice, isn't it? Slight problem: when bamboo cups contain hot liquids, they release formaldehyde which can be a health hazard. Ok, the less humans the less pollution, but it should be good to tell that to people honestly, shouldn't it?
Some of the covers are brilliant. I love Lithium the Green Day. Not so much for NOFX, bpm is too slow, the outstanding bass line from Fat Mike is missing... But for most of the other ones, it's splendid!
Oh, by the way, a note for Mr. Dabbs: please continue your brilliant posts on LinkedIn. It's the major reason why I check this site from time to time.
whereas the majority of Crimean residents consider themselves Russian
This is mostly because Russia deported massively Tatars from Crimea. Nowadays we call that an ethnic cleansing:
"Crimean Tatars constituted the majority of Crimea's population from the time of ethnogenesis until the mid-19th century, and the largest ethnic population until the end of the 19th century.Almost immediately after the retaking of Crimea from Axis forces, in May 1944, the USSR State Defense Committee ordered the deportation of all of the Crimean Tatars from Crimea, including the families of Crimean Tatars serving in the Soviet Army."
Also, 75,000 Crimea Tatars died during the 1920s by hunger because of collectivization, when their crops were taken from them and send elsewhere in Russia.
Crimea was "Russified", the dirty way.
If the US invades Cuba, puts every Cuban in a boat, with only Americans citizens in Guantanamo staying, would it be legitimate to accept a pro-US self-determination referendum after that?
From the link:
"We can appeal to common sense, demand respect for international law, and if that doesn't work, we can bomb
Yeah, because invading a neighbouring country and annexing a part of its territory is respecting international law.... Russia's position is farcical.
The West should official consider Russia as a hostile Nation, even if it helps the Russian nationalist playbook, "the nice us vs the evil others".
remove it
I thought it was quite impossible to do :~
reprogram it
How do you reprogram a RFID tag? I would be curious to know.
It's not a particularly efficient solution vs, say, lithium-ion batteries being swapped at stations with 80-90% efficiency.
Lithium batteries are hard to recycle, they are not efficient when it's getting cold, and lithium extraction isn't really a clean process
More than 99% of hydrogen is produced from methane and steam.
That's true for today, but things change. I expect this number to be greatly different in a near future.
Conventional hydrogen and blue hydrogen cost about $2 per kilogram (though the price varies depending on where it's produced), while green hydrogen is around twice as much. That price, however, is falling steeply with renewable energy prices and cheaper costs to make equipment used for electrolysis, called electrolysers. An Australian National University report last year estimated Australia could currently produce green hydrogen at about $3.18-3.80 per kg and at $2 per kg by the end of the decade. At that price, it would be cost-competitive with fossil fuels, experts say.
Fiona Beck, an ANU physicist and convenor of the Zero-Carbon Energy for the Asia-Pacific research initiative, a hydrogen fuel project, said there were no "technological blocks" to producing cheap green hydrogen. "It's all feasible," she said. "There's things that need to be solved but they're incremental solutions we know how to do — there's nothing we have to discover."
Tim Buckley, an energy market analyst from the Institute for Energy Economics and Financial Analysis (IEFA), predicts the price of green hydrogen will drop 70 per cent in the next decade in countries with cheap renewables.
I've never really understood what the difference is between 1 person working 80 hours a week and 2 people working 40 hours a week (assuming pay reflects the number of hours worked).
Reality is quite different: the point is having 1 person working 80 hours a week paid the same as 1 working 40 hours a week.
... t-shirts made in some sweat-shop in Bangladesh
I suppose there a prison system somewhere on this planet you would want to spend time in
Gross profit also crested the £1bn mark (up from £876.8m in 2019), which translated to £212.9m profit before tax
That's creative accounting, isn't it?
an impressive increase in turnover £2.8bn in 2019 to £4.032bn in 2020 (...) The company also paid a bit more tax, sending £43.5m the way of Her Majesty's Revenue and Customs (HMRC), compared to £34.6m the previous yea
Turnover: +44% - Taxes: +25%
Very creative indeed.
Except that missile defences have been vastly improved since the days of the Falklands
There is _no_ defence against hypersonic missiles.
King, who represents the state where half the Navy’s destroyers are produced, also said he’s concerned about the long-term viability of aircraft carriers in a world with hypersonic missiles.
“I think it does raise a question of the role of the aircraft carrier if we cannot figure a way to counter this capability,” he said. “I don’t want indefensible, $12 billion sitting ducks out there. I’m not prepared to say the carrier is obsolete, but I say that this weapon undermines the viability of the carrier.”
the US developed the Aegis system
We have yet to see if it would be efficient in a real war. The USS Stark was equipped with a Phalanx CIWS, but was nonetheless hit by two missiles, who were undetected.
Argentinian Airforce were mostly using gravity bombs
Exactly what I said: Argentina had a third-world army. In that case aircraft carriers can be useful, but you just a couple of them, not tens, especially if the cost of one is $12 billion!
Against a modern army, carriers are just expensive targets.
That's what I said, aircraft carriers are useful only against third world armies.
In the Falkland war, 40 years ago, UK was fighting against an under-equipped army. Argentina had only six Exocet missiles, with 5 intended to be launched from an aircraft. With those six missiles, they were able to sunk a guided missile destroyer and badly damage a container ship and another destroyer. UK was very lucky no carrier was hit.
Would Argentina have 60 Exocet missiles instead of 6, the British fleet would have been annihilated.
In a major war, a carrier would not face one of two missiles, but dozens. Look at the Millenium Challenge 2002, it's quite easy to overwhelm defence capacities.
For air refuelling, you don't necessarily require a carrier, if you have some airbases available strategically around the World.
Aircrafts carriers are sitting ducks waiting to be sunk. A pair of it may be useful to exert attacks against a third world country, but in a full scale war against a powerful enemy they will end as artificial reefs for fishes in a few hours.
Building 10 of those is a huge waste of money that could be better spent to try to help mankind rather than destroying it.
See this article for more explanation: This Is How the Carriers Will Die
Look also at this
A ransomware group would have been hacked? But who can you trust these days?
It's about time to be much more agressive against those scumbags and all the ones facilitating their jobs: lazy registrars, C&C servers hosts who don't care as long as they're paid, and the whole cryptocurrencies ecosystem.
Use of color affects the accessibility of your software to the widest possible audience. Users with blindness or low vision may not be able to see the colors well, if at all. Approximately 8 percent of adult males have some form of color confusion (often incorrectly referred to as "color blindness"), of which red-green color confusion is the most common.
source: https://docs.microsoft.com/en-us/windows/win32/uxguide/vis-color
GUI 101: Never rely on color only to display an information.