fullsquare
@fullsquare@awful.systems
- Comment on forbidden dots 4 days ago:
this is how 238Pu ceramic pellets for space probe generators look like, no fission required just alpha decay. If it was fission, it wouldn’t need to glow like this entire time because you can just turn it off
- Comment on Wi-Fi Extender, Long-Range, Suggestions? 1 week ago:
can you pull ethernet cable along power cables, wherever they are?
- Comment on Wi-Fi Extender, Long-Range, Suggestions? 1 week ago:
regular ethernet should work on this kind of distance, but it means digging
- Comment on Wi-Fi Extender, Long-Range, Suggestions? 1 week ago:
Mate do i have just the right thing for you, but it requires some soldering. It’s also probably cheapest solution working over longer range than you need
First you need two directional antennas. Use this lea.hamradio.si/~s53mv/wumca/cup.html the 13cm design specifically. They’re using hard to get semirigid coax but you can really just use common RG178 with braid tinned to make it stiff. Good way to get this would be getting a pack of u.fl-SMA pigtails, which you can also use for connection.
You also don’t need special aluminum housing like they do, cookie tin of the right size would be sufficient, or any other container of similar nature. If you can’t weatherproof it, putting it inside on windowsill is also fine
Then, plug TL-WN722N into it, or some other single-antenna thing, and you’re set. This one connects over USB and has removable RPSMA antenna, so you can connect it easily with correct cable (SMA plug - RPSMA plug)
to your new directional antenna. This thing works well over 200m distance, provided clear line of sight, and probably more than that
- Comment on China freezes chip chemistry to slash defects by 99 per cent 2 weeks ago:
it could be this www.nature.com/articles/s41467-025-63689-4
- Comment on New image-generating AIs are being used for fake expense reports 3 weeks ago:
in my country it used to be like this for 50 years, you get flat rate per day, counted up to fractions of day, separately for accomodation and food + everything else. you only have to keep transportation tickets
- Comment on New image-generating AIs are being used for fake expense reports 3 weeks ago:
behold, disruption
- Comment on Utter nonsense 3 weeks ago:
i don’t mean beta-oxidation, it’s just a series of separated normal reactions. i mean something like this: when first learning about ketones, you might learn about aldol condensation, which has enol as a nucleophile and another carbonyl as electrophile. at some other point you might learn about strecker reaction, which has iminium ion as electrophile and cyanide as nucleophile. but really, what you can do is mix and match, and you can pair enolizable ketone and iminium (mannich reaction) or carbonyl and cyanide (cyanohydrin formation) and then generalize, for example you don’t need strictly ketone for mannich, you can use any electron rich conjugated system like malonate or nitroalkane anion (henry reaction) or phenol or indole. to figure this out you need to study mechanisms. these last two are usually treated as variants of friedel-crafts reaction, but really categories like this are fake
and to get that right, you need to know how these reactive intermediates look like, how reactive they are, what influences their stability which means that ochem starts with discussion of carbocations, carboanions, radicals, their shapes and orbitals involved, hyperconjugation, solvent effects and the like. and then first reactions taught are sn1/sn2, because these showcase these fundamentals nicely, and from there, it’s about introduction of more compound classes
we only had synthons introduced during lecture at around 4th year, and only for ochem path, it’s not doing a lot at that point and imo would have much more impact right after ochem intro course
- Comment on Utter nonsense 3 weeks ago:
i always thought that the idea of synthons should be taught early on en.wikipedia.org/wiki/Synthon
- Comment on Utter nonsense 3 weeks ago:
i’d say it’s more important to learn mechanisms because this way you can notice these patterns of reactivity easier. at some point you’d only get new reactions that are really just pieces of other reactions you know put in a new way
- Comment on Utter nonsense 3 weeks ago:
there’s zero reason to make chart like this, it’s both barely comprehensible and touching surface level stuff only (where are palladium couplings for one)
- Comment on Mom they're fighting again 4 weeks ago:
- Comment on Physics! 4 weeks ago:
These things are under high voltage, so no. And then there’s several kg of mercury inside
- Comment on Physics! 4 weeks ago:
no, but they will also kill you (but not by magic)
- Comment on AI might be creating a ‘permanent underclass’ but it’s the makers of the tech bubble who are replaceable 4 weeks ago:
it’s straight up still not good enough
- Comment on AI might be creating a ‘permanent underclass’ but it’s the makers of the tech bubble who are replaceable 4 weeks ago:
right after fusion power goes commercial, which also will power it all
- Comment on Have you ever been shown the "clarity"? 4 weeks ago:
if your brain does that without drugs i’d suggest you check it with a neurologist because it’s not usual. maybe there will be some new kind of epilepsy named after you
- Comment on Have you ever been shown the "clarity"? 4 weeks ago:
I have excellent vision normally and don’t need glasses, I can see things from extremely fair away and my eyes have a wide FOV (my peripheral is great)
it sounds a lot like psychedelics and not any usual human experience
- Comment on Cause and Effect 1 month ago:
i think that conspiracy theories are more about feeling special about knowing some secret knowledge, lots of people fall for this and even create conspiracy theories without realizing, no matter how smart they are
- Comment on Before modern-day authoritarian regimes, did people living under abosolute monarchies talk criticize the monarchs? Or did they just stay silent in fear of persecution? 1 month ago:
Radio transmission doesn’t require state-level capacity (yes there are other barriers like cost or skill) and waves don’t care about borders. Receiving foreign radio was a big thing and it doesn’t require special equipment
- Comment on yeah everything is probably made of like, idk, earth water, fire and air or something idrk 1 month ago:
Aristotle said so much dumb shit, like he said that womrn have less teeth and never bothered to check
- Comment on Shape up. 2 months ago:
maybe his neck just did that
- Comment on They thought they were making technological breakthroughs. It was an AI-sparked delusion. 2 months ago:
lol nope they can’t do that because “guardrails” aren’t anywhere near reliable, and they won’t because it would cut into their
profitsuserbase numbers, based on which they raise vc money. delusional chatbot user is just a recurrent subscriber - Comment on Is there a word for the happiness in finding the exact right word? 2 months ago:
i think there is, but i don’t want to spread associated cognitohazard
- Comment on Help. 2 months ago:
it also requires zero effort on their part
- Comment on What if a billionaire wants to help you? 2 months ago:
- Comment on Would we be able to use the measles virus to reset the immune systems of people with autoimmune disorders like MS or rheumatoid arthritis? 3 months ago:
not an immunologist; i don’t want to undersell this to you: immunology is fantastically complex subject with many redundancies, feedback loops, and frustrating number of moving parts, many of which are still unknown in sufficient detail. that said, if you want any chance for it to go: first you’d have to figure out what exactly mealses virus does, then you’d have to find a disease that can be cured or treated by obliterating whatever mealses virus is obliterating, and then if there’s any match (big if) it’ll probably still won’t work just with wild type virus and require significant modifications. and even then, that effect as is known in mealses today is not very reliable and lasts only months to years
maybe in the course of figuring the first one there will show up an option to modify mealses virus in some significant way that might allow it to target something else, and maybe target other kind of disease, because in no way it’d be a blanket cure for all immune diseases ever. maybe someone made an observational study already that tracked how prevalence of some immune diseases changes after mealses infection, but many of these are rare diseases and it’d be massively hard endeavor
- Comment on Alexa, how do I remove cooties? 3 months ago:
I think it would be comparable to situation where all mRNA is suddenly unusable, ie protein synthesis can’t run at all. This would be something like ricin or diphteria toxin poisoning, but instead of being limited to gastrointestinal lining it’s spread all over. I’d guess hours to days before anything visible starts happening (symptoms only start to appear when deficit in new protein synthesis becomes noticeable; all protein already made continues to work for sone time)
- Comment on How do AI data centers manage to *consume* water, but when I cool my house, my A/C *makes* water? 3 months ago:
it wasn’t a problem before they started doing this
- Comment on How do AI data centers manage to *consume* water, but when I cool my house, my A/C *makes* water? 3 months ago:
because it’s cheap, easy, compact, well understood, and makes numbers look good. number in question is ratio of energy used by entire facility to energy used by silicon only (i forgor how it’s called). alternative is dissipating heat from radiators, but this makes this number like 3. evaporative cooling makes this number closer to 1.2
