@skillissuer@discuss.tchncs.de avatar

skillissuer

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skillissuer,
@skillissuer@discuss.tchncs.de avatar

this is much better than some other older explosives that are toxic on skin contact

skillissuer,
@skillissuer@discuss.tchncs.de avatar

not good. somebody actually tried and lived to tell the tale:

en.wikipedia.org/…/1999_Russian_apartment_bombing…

Pinyaev guarded a storehouse with weapons and ammunition near the city of Ryazan. Together with a friend, he entered the storehouse to see the weapons. The friends were surprised to see that the storehouse contained sacks with the word “sugar” on them. Pinyaev and his friend were discouraged, but didn’t want to leave the storehouse empty-handed. The two paratroopers cut a hole in one of the bags and put some sugar in a plastic bag. They made tea with the sugar, but the taste of the tea was terrible. They became frightened because the substance might turn out to be saltpeter, and brought the plastic bag to a platoon commander. He consulted a sapper, who identified the substance as hexogen

skillissuer,
@skillissuer@discuss.tchncs.de avatar

that’s russian occupied ukraine, not russia

skillissuer,
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where’s saddam

skillissuer,
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now Time will collapse

skillissuer,
@skillissuer@discuss.tchncs.de avatar

liveuamap.com they have few maps, one for ukraine of course, one for armenia-azerbaijan, one for israel-palestine, one for syria and so on

this one strictly speaking is israelpalestine.liveuamap.com

skillissuer,
@skillissuer@discuss.tchncs.de avatar

and the girls are monitoring HF

well, at least she does nitter.net/olga_pp98

skillissuer,
@skillissuer@discuss.tchncs.de avatar

another good map for ukraine war is map.ukrdailyupdate.com (enable tooltips) mady by nitter.net/AndrewPerpetua

skillissuer,
@skillissuer@discuss.tchncs.de avatar

nitter.net/DefMon3 makes another one

skillissuer,
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there is also deepstatemap.live

skillissuer,
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cmon, palestine will survive

at least geographically

skillissuer,
@skillissuer@discuss.tchncs.de avatar

CVN Ford went to eastern med for this explicit reason: to make sure no one lets intrusive thoughts win

skillissuer,
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also, nice that you mention this because saudis were pretty close to normalizing international relations with israel and it might quite possibly be that hamas launched offensive now to derail it

skillissuer,
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Hamas has more credible airborne than VDV

skillissuer,
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every podunk town in eastern block in 90s

skillissuer,
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i’ll take a fat guess that this “sharing revenue with community” is code word for some crypto garbage

skillissuer,
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all crypto is garbage

skillissuer,
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there are still airbases and supply depots there

skillissuer,
@skillissuer@discuss.tchncs.de avatar

they’re selling hype, not software

skillissuer,
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No boots? Okay, but socks stay ON during liberation of Crimea

damn weirdos and their rules…

skillissuer,
@skillissuer@discuss.tchncs.de avatar

brrrrrrrrrrrrrr brrrrrrrrrrrrrr brrrrrrrrrrrrrrrrrrrr

skillissuer,
@skillissuer@discuss.tchncs.de avatar

that first letter is pretty fucking rich considering sheer volume of antiintellectual propaganda coming from usual right wing sources (climate change denial, covid conspiracies, creationists and assorted religious conservative nutjobs) but yeah, let’s blame these scawwy postmodern marxists

skillissuer, (edited )
@skillissuer@discuss.tchncs.de avatar

you turn it off.

“critical” is the normal operating state of reactor when it’s working. what you want to avoid is supercriticality, which means that power is rising. if it’s delayed supercritical but prompt subcritical, power rises and may or may not stop on its own at some point. when it’s prompt supercritical, you don’t even have time to ask www.nuclear-power.com/…/reactor-criticality/

skillissuer,
@skillissuer@discuss.tchncs.de avatar

thanks i’m calling UK Federal Kingdom from now on

skillissuer,
@skillissuer@discuss.tchncs.de avatar

December 2022 February 2023 Vuhledar incident

skillissuer,
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you must mean mobile environmental disaster Kuznetsov (it deploys smoke cover even when it’s not on fire)

not to mention psychic damage emanating from welded shut compartments

skillissuer,
@skillissuer@discuss.tchncs.de avatar

you underestimate people’s complacency and inertia, in no way this is end of reddit

skillissuer,
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o7

skillissuer,
@skillissuer@discuss.tchncs.de avatar

hypersonic during launch phase only, at the target it’s more like Mach 3.5 if we’re talking about Kinzhals downed by Patriot some months ago

skillissuer,
@skillissuer@discuss.tchncs.de avatar

okay, but for a missile 30km away radar signal gets 0.2ms to get there and back, that’s like 40cm of missile movement

skillissuer,
@skillissuer@discuss.tchncs.de avatar

this is not new. wearing face masks was branded as a patriotic duty all the way back during spanish flu (1918) history.com/…/1918-spanish-flu-mask-wearing-resis…

skillissuer,
@skillissuer@discuss.tchncs.de avatar

there are plenty issues with wear of all moving parts involved. fortunately it can be improved on in a pretty straightforward way www.youtube.com/watch?v=iGGOjD_OtAM

skillissuer, (edited )
@skillissuer@discuss.tchncs.de avatar

but do you need stored large amounts of electric energy? most of energy use is in form of heat for space heating and hot water, and for storage of that all you need is big barrel with multiple heat exchangers (coiled pipes + baffles). put in heat from solar concentrators, heat pump maybe, furnace and you’re good in all situations

problems only really begin if you want to start up welder on cold winter night

other than that, generate energy from solar + wind turbine, top up battery, dump excess in heat pump or water heater. have small petrol generator to service surge capabilities. this will be enough in majority of cases. this is also the logic national energy grids operate on, with the difference that you can’t set up pumped hydro storage in your backyard, most of the time

skillissuer,
@skillissuer@discuss.tchncs.de avatar

first, it stores heat only. you can make it work with 1000L or so barrel of water and this gets you supply for days. second, you’d want this thing to service entire small community, because otherwise square-cube law fucks you hard. you need also all the auxiliary devices like heaters, pumps, control hardware that looks the same no matter if you make it work for your house or small village

skillissuer,
@skillissuer@discuss.tchncs.de avatar

there are many nifty ways to do it. i like molten silicon for example silbat.com

but how about shift in perspective? if you want to get in on all renewable power source, maybe it’s you who should adjust power consumption a little bit instead? fortunately most of energy used is used up for heating, and you can plug all excess energy into heater, store energy in big barrel of water for all your heating needs, and skim electrical power when available + maybe batteries as a higher priority

skillissuer,
@skillissuer@discuss.tchncs.de avatar

Additionally, I’d put the heated sand to work heating a large concrete driveway, a sidewalk in the winter months

please invest in good winter shoes and shovel. first, you need massive amount of heat to warm up all that concrete and then melt ice, but it’s not enough. you also have to get rid of liquid water entirely because otherwise it’ll just freeze again but now it’s glossy and flat surface of ice

square-cube law

when making sand battery, what you’re actually interested in is mass of sand. however you can’t conjure perfectly spherical globe of dirt suspended in vacuum, you have to put it somewhere. you need a tank, and one with hefty insulation. now: mass is proportional to volume, which is proportional to r^3 - cube. price of tank and amount of insulation needed is proportional to its surface - r^2 - square. the bigger you make it, the more sand you get per square meter of tank surface, meaning that storage costs go down with scale. that example from finland serves entire community for example

square-cube law provides some hard limitations on what is practical and what is not, for example it explains why big animals move slower than smaller ones. en.wikipedia.org/wiki/Square–cube_law

skillissuer,
@skillissuer@discuss.tchncs.de avatar

in some places energy for individual customer is cheaper at night, but the real deal is with large industrial power consumers, like arc furnaces or aluminum smelting plants. these things have special arrangements that allow grid operator to regulate some % of power in return for cheaper energy, either by remote control or on schedule. in principle the same thing could work for thousands to millions of water heaters, making it work like a large, one way “battery” soaking up peaks in energy production

skillissuer,
@skillissuer@discuss.tchncs.de avatar

i don’t care what you think

skillissuer,
@skillissuer@discuss.tchncs.de avatar

you need a lot of insulation on all sides. putting it all above ground would be easier because of no risk of groundwater ingress. structural steel container, fire-resistant brick and lots and lots of mineral wool around (we’re talking about insulating red-hot (600C) sand so that it stays hot for months). we’re talking about several tons of dirt suspended above ground and insulated on all sides, including bottom. you could put that heat to better use if it stays contained within another insulated container, that is as a hot water source or for space heating. these things are not free, and this comes before any heaters, pumps, piping, automation needed for it to work

if you want to go for a solution, then all good, but for it to be practical you also need to make sure it’s better than alternatives. i think that getting another tractor would be cheaper and more practical in your situation

Can acidic and carbonated drinks corrode aluminium bottles?

I like to put lemon or vitamins (those tablets that also create fizzyness) in my water and have been wondering if it is problematic to do so in my aluminium drinking bottle. I wouldn’t normally think so, since soft drinks also often come in aluminium cans, but I’m not sure. Are aluminium salts even unhealthy?

skillissuer,
@skillissuer@discuss.tchncs.de avatar

there’s a reason beer was the first canned beverage. more acidic things like some sodas corroded aluminum too much until plastic liners were introduced

these fizzy tablets should be ok, but lemon is probably a nope

skillissuer,
@skillissuer@discuss.tchncs.de avatar

that’s probably just anodized aluminum (not lining)

skillissuer,
@skillissuer@discuss.tchncs.de avatar

that said, i wouldn’t care either way too much. if you drink black tea you probably ingest more aluminum this way

skillissuer,
@skillissuer@discuss.tchncs.de avatar

Leave water in those non coated metal containers long enough and it’ll leach from the metal.

in some cosmic sense yeah there will be equilibrium after some time but most of the time it’s just called “corrosion”

skillissuer,
@skillissuer@discuss.tchncs.de avatar

my take is that these were training rounds fitted with real, explosive fuze adapters and live fuzes. why would this happen? logistics fuckup in most charitable interpretation

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