[-] fullsquare@awful.systems 3 points 2 hours ago

carbon fibre is reflective for microwaves

[-] fullsquare@awful.systems 1 points 3 hours ago* (last edited 3 hours ago)

I mean, yeah. But it's not some national open source project, and that was claimed. Also, i'd like to know how intensely it was audited, because it's something different from open-source matrix homeserver/element-x (it's the propertiary part of it)

[-] fullsquare@awful.systems 18 points 5 hours ago

that's reskinned, siloed matrix instance with maybe minimal changes

[-] fullsquare@awful.systems 5 points 12 hours ago

carbon tet will destroy your liver, and it's also a dogshit solvent. hexane is a replacement in some applications. if you need a better solvent, use toluene

[-] fullsquare@awful.systems 3 points 1 day ago

GHB is one of many date rape drugs that people also consume recreationally, and yeah i’m not sure why they love it!

it shares some of bits of appeal with alcohol and benzos. some people also use it to ride out stimulant comedown, or at least to catch some sleep after stimulant use, and this goes for regular stimulants of amphetamine type but also for ketamine (and psychedelics. not sure how much crossover is out there, but it might be a different type of user). i heard that it also has some anabolic effect, but using it for pre-workout would be unwise

i don't know what kind of approach to workplace drug testing is/was out there, but ghb/gbl is a combination of being rather polar and having no chromophore which all else equal, means that its detection is harder/different compared to other drugs, and being metabolized quickly and also being formed naturally at low levels, which means that detection window is short. ghb lacks groups that typically react with reagent-type tests and instead custom-made strip tests are needed, or lab testing

there also might be general mindset that they're so rational, that it's impossible for them to use drugs in harmful ways (famous last words). some people just think of it as an another tool in their toolbox, and figure out that something is wrong only when they wake up strapped to a bed, with half of their face burned and iv line attached, in a psych ward two countries over, if ever

[-] fullsquare@awful.systems 3 points 1 day ago

The developers claim this thing will use “net zero” water. This is while they want to take water that would normally be topping up the Great Salt Lake and use it to cool the site’s gas power plant.nbs

gas turbines (like seen already in genai dcs) don't need water for cooling, ccgt powerplant does, but it's because there's steam turbine downstream. dc itself could also use evaporative cooling. ccgt has some components with long lead time that will require more planning, footprint and construction than straight gas turbine powerplant

[-] fullsquare@awful.systems 3 points 3 days ago

that night, dgerard's sock drawer grew three sizes

[-] fullsquare@awful.systems 8 points 3 days ago* (last edited 3 days ago)

thunderous speed in the range of minutes per residue (not every aminoacid can be used and what they're printing is dna, not proteins so multiply it 3x. they're encoding 3 bits per aminoacid, but there's overhead, error correction and structural requirements that make data density lower than 1 bit per nucleobase)

[-] fullsquare@awful.systems 10 points 3 days ago

it's a haven for people who think Rimu specifically is some kind of combination antichrist/lolcow

the enemy is both strong and weak etc etc

[-] fullsquare@awful.systems 8 points 4 days ago

Nothing has changed in that respect, except now we have an extra tool to make sure we get the decision correct.

And I thought the summary did a much more comprehensive justification of the ban than I could have fitted in the modlog, so why not include it?

idk maybe because it's unnecessary to do that in the first place, and can be filled with nonsense from nonsense generator https://lemmy.dbzer0.com/comment/25880065 emphasis mine

and previously, https://lemmy.dbzer0.com/post/67894781/25769171

unless i'm to disbelieve my lying eyes, that does sound awfully like llms are in the decision making process

[-] fullsquare@awful.systems 14 points 5 days ago

they want your data and freshwater

3

I'm picking up an idea left by Dick KK4OBI, that you can lower impedance of dipole by arbitrary ratio if said dipole is zigzagged or otherwise uniformly contorted in some meandering shape. Side effect is that dipole becomes shorter and needs more wire. While there's data about impedance for fundamental, there's nothing about harmonics which is something that OCFD might be expected to handle well, so guessing that the really important part is aspect ratio of meander, i've made a couple of VHF-scale models with different meander aspect ratios (and many more much smaller sections), and some of data i've been able to collect roughly matches. The thing I'm trying to figure is what aspect ratio should be to cover multiple bands while using OCFD, say 40-20-15m bands, and whether impedances at different frequencies fall at the same rate. Eventually, when i figure this out, i'll try to make a full size 40m fundamental antenna, as I think that i've figured it out in mechanical terms

However during testing it turned out that I have severe common mode current problems, as two 10mm dia split ferrite beads were evidently not enough, so what little i've been able to collect is mostly useless. When I packed up everything I've found 4 Laird 28B beads that should together give 1100 ohms of impedance or so at 100MHz which also happens to be close to lowest frequency in my setup. Is this enough? Feedline is currently about as long as shorter arm of straight dipole at 22,5:77,5 split ratio, should I change it?

107
view more: next ›

fullsquare

0 post score
0 comment score
joined 1 year ago