I have superficially researched both options (with the conclusion that I cannot use either, since my installation would be too small, and would suffer from severe heat loss due to an unfavourable volume-to-surface ratio - it makes sense to design thermal stores for a city or neighbourhood, not a household).
I'd add a few notes:
A thermal store using silicate sand is not limited by the melting point of the sand, but the structural strength of the materials holding the sand. You can count on stainless steel up to approximately 600 C, more if you design with reserve strength and good understanding of thermal expansion/contraction. Definitely don't count on anything above 1000 C or forget the word "cheap". I have read about some folks designing a super-hot thermal store, but they plan to heat graphite (self-supporting solid material) in an inert gas environment.
Heat loss intensifies with higher temperatures, and the primary type of heat loss becomes radiative loss. Basically, stuff starts glowing. For example, the thermal conductivity of stone wool can be 0.04 W / mK at 10 C, and 0.18 W / mK at 600 C.
Water can be kept liquid beyond 100 C. The most recent thermal stores in Finland are about 100 meters below surface, where the pressure of the liquid column allows heating water to 140 C.
However, any plan of co-generation (making some electricity while extracting the stored heat) requires solid materials and high temperatures.
The transfer to electricity could be done by using the heated mass to heat a hot pumped liquid or using transfer rods made of a solid material with a high heat transfer coefficient.
Alternatively, heat can be extracted by pumping liquid metal (sodium, tin, low-temperature eutectic alloys) in a pipework of copper (if there is chemical compatibility with copper). But handling liquid metal with a magnetic pump isn't typically done on the DIY tech level.
To be honest, I tried a fair number of experiments on the subject, including low-temperature Stirling motors. They're difficult to build well. I would recommend plain old steam turbine. Steam means pressure, pressure means precautions (risk of bursting, risk of getting burned), but modern approaches to boilers try to minimize the amount of water in the system, so it couldn't flash to steam and explode.
[Thread, post or comment was deleted by the author]
A typical "obscenely bright" LED chip might be Cree XML, but many similar chips exist. You'd need a plano-convex or equivalent Fresnel lens - shorter focal lengths favour compact design. Then you need a driver. Some are fixed while some adjustable with a tiny potentiometer. You'd need an 18650 cell holder (it can be made too, an 18650 will go into a leftover piece of 20 mm electrical cabling pipe with a spring-loaded metal cap engineered of something).
Myself, I bought a nice head lamp, but it broke after one year. The driver board failed. Being of the lazy variety, I replaced the board with a resistor to limit current and now it's been working 3 years already. Not at peak luminosity, the resistor wasn't optimal of course. :)
...other users had questioned whether the term 'Free Territory' had any basis in reliable sources. I was a little surprised. This was the term that I had used for years, one that was inextricably linked in my mind with the Makhnovists. This could not just be some random neologism coined by Wikipedia… right?...
The author does not seem to have read Azarov or at least his references to sources leave this impression. If he was doing his research right now, I would recommend him to browse one book for hints about how the RIAU called themselves, and for additional sources of literature. But in general, I think he has the right conclusion. :)
The PDF sadly isn't searchable (it's image, so it's a black hole for most search engines).
My understanding: they called themselves the "Insurgent Army", sometimes the "Insurgent Division" and did not declare a state or claim a territory. When they were popular and widespread, they were more formally known as the "Revolutionary People's Army of Ukraine" and "Revolutionary Insurrectionary Army of Ukraine" (kontrrazvedka was the counterintelligence branch which did dirty deeds like assassinations, espionage, counter-espionage, sabotage, expropriation / grand theft, etc)
A related story:
The first known anarchist state, and perhaps the only one, was to my understanding a republic declared by rebelling sailors and fortress-builders of the Russian fleet on the tiny North Estonian island of Naissaar (Nargen). (source) The "state" was laughably tiny and the population too - but the name was backed by possession of two battleships (Sevastopol and Petropavlovsk), with the ironic twist that the crew far outnumbered island dwellers. The only body to ever recognize the "state" was the Soviet of Tallinn, which existed during a double rule (togehter with the prototype Republic of Estonia) in the power vacuum between the Czarist retreat and the advance of imperial German troops. Evacuating before the German advance, the battleships sailed first to Finland and then Kronstadt, and the anarchists of the short-lived republic became core organizers among the sailors who later rose up in the Kronstadt Rebellion.
I generally agree with CrimethInc articles so extensively that I I find it hard to pick at something in them.
This time, however, I find the claim...
Palestinian liberation will only come about as the result of a full-scale political crisis in the United States
...but I don't find the evidence.
Firstly, Israel is not wholly dependent on US weapons, and according to most measures, it has already secured a military victory - at such cost in civilian lives that it's a diplomatic defeat - everyone who can count the casualties and destruction knows that Israeli politicians gave zero fucks, alienated many supporters (they had great international support when Hamas attacked them) and very likely will receive an invitation to the ICC (hopefully along with Hamas leaders, so they can be tried together - reality may differ as both will try to avoid the court).
Also, if the claim were true, and a full-scale political crisis in the US was required for Palestinian liberation, then sadly, assuming a full political crisis incapacitates the government to some degree - there would be considerable risk that Palestinian liberation and Ukrainian independece sit on opposite plates of the scale. Myself, I don't like the concept that one group's liberation and another group's freedom can be contradictory. However, it seems undeniable that the US war machine is currently supplying weapons for two main causes, one of them reasonably ethical (defending Ukraine) and the other not (bombing Gaza into a previous epoch of history).
Regarding what the US government actually does... I don't read every article and post about diplomacy (so I could be missing a lot) but it appears to me that the US government is at the moment actively dissuading Israel from going into Rafah (the remaining comparatively less damaged settlement) - both by talk and refusal to send heavy air-dropped bombs.
This could be due to international pressure (the US has Arab allies and has to present some facade to them), could be due to protests (Biden surely worries about approaching elections). It could even work - but might not, because Israel has other sources of weapons and might empty its stockpiles of some categories to make the final push. :( Still, as a long-time and reliable donor, the US government has much leverage on Israel. Especially as it recently helped mitigate the Iranian missile and drone attack, downing Iranian munitions above Jordan and Iraq and perhaps elsewhere before they reached Israel. Biden can - overly simplified - send a message of "we assisted and protected you, we have your best interest in mind, and it's in your best interest to stop now". Netanyahu might listen or ignore the message.
In the end, however, a word of caution - whatever happens, whatever the US does - if Hamas returns to power, that will not be Palestinian liberation, because the Hamas guys weren't liberating anyone. In fact, they were beating, imprisoning and killing some of their Palestinian political competitors for the old-fashioned goal of staying in power.
I literally cannot find the word "Hamas" in the article at all. It speaks of everyone except those who started the current war. That's a massive oversight - oversight to the point of blinding oneself to a serious setback right around the corner. I'm not happy to see some of my comrades blinding themselves.
If one seeks a path to liberation, it has to include some recipe of not letting Hamas recover and return to power. And somehow getting lunatics out of Israeli government. The US has a role to play, and it may even be a decisive role, but as long as one side has rulers who prefer shooting civilians, and the other side has rulers who prefer to obliterate urban centers with bombardment... local political leadership must change, and no liberation will come unless it changes.
Thank you for the good wishes, and happy May Day as well.
Over here, it's a public holiday but hardly anyone remembers what happened in Chicago...
...and to see people walk with red and/or black flags today, one would have to take a ship 80 km northwards. Still, one guy from the trade union of transport workers got his article published today, and I would not be surprised if smaller meetings happened where people did remember.
New MIT Discovery Just Solved one of Physics BIGGEST Mysteries! - YouTube ( youtube.com )
Summary:...
Sand Batteries vs Water Batteries
I can't remember if I saw the argument here or on Reddit, but this is my preferred platform so it's going here....
[Thread, post or comment was deleted by the author]
We Carry a Free Territory in Our Hearts: How Wikipedia Fabricated an Anarchist State ( www.thecommoner.org.uk )
...other users had questioned whether the term 'Free Territory' had any basis in reliable sources. I was a little surprised. This was the term that I had used for years, one that was inextricably linked in my mind with the Makhnovists. This could not just be some random neologism coined by Wikipedia… right?...
Why the State Can't Compromise with the Gaza Solidarity Movement ( crimethinc.com )
Happy May Day! ( margaretkilljoy.substack.com )
There's hope, kids!