sga

@sga@piefed.social

• ⁨Comment⁩ on ⁨I love authoritarians yum yum⁩ ⁨⁨4⁩ ⁨days⁩ ago⁩:

  not all vaccines. some vaccines (most olden ones) were just differnt similar or weaker or less potent strains, which while still infected you, you get some immunity because your body made “ammunition” against the actual threat.

  then there are vaccines like mrna vaccines, where we find the mrna sequence that enocdes for specific protiens, for example, some surface protien. this protien is a part of virus, but alone the protien is pretty much useless. your body still sees that their is a foreign protein, and builds ammunition against this protien. when the actual protien with the specific virus comes, our body sees the same virus, and uses the same ammunition.

• ⁨Comment⁩ on ⁨Biased source⁩ ⁨⁨4⁩ ⁨days⁩ ago⁩:

  part 7 is steel ball run? i have to start reading jojo someday

• ⁨Comment⁩ on ⁨Drinking coffee from a cup made of coffee⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  yesnt. agar is not exactly the food (it is one part of the food). we usually add other nutrients as well. consider agar like a staple bread (povides structure).

• ⁨Comment⁩ on ⁨Drinking coffee from a cup made of coffee⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  while true, they are effectively single use (in latter half of video, he slices open a cup, and shows cracks developing). these are, in theory, replacements for platic temporary cups. and the coffee grounds are essentially just a binder used in agar mix to harden it (kinda like adding wodden chips in some glue mix to make it hard).

• ⁨Comment⁩ on ⁨Hardest version I've seen yet⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  As a non cat owner - why? how bad could it go. at best i assume cat would scratch my face or other body parts. like what is the worst that can happen. maybe cat eats you, but like, what is so bad

• ⁨Comment⁩ on ⁨Will it end life on earth? I don't fucking care⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  I don’t care about cockroaches, they do not worry me much. I also do not care about like 95% of mosquito species which do not “annoy” humans. I just want the remaining 5% to vanish

• ⁨Comment⁩ on ⁨But like⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  here is another seemingly wrong thing - most metals get brittle when they harden. or in the meme-y way

  when the metal hardens, it breaks more easily, man…

  Those who want the reason, when metals are hardened (by means by annealing and subsequent quenching, or cold working, or hot working), multiple “defects” (point, line, planar as well)(in this context, these words have specific meaning, but that is not very important). these “defects” resist motion, so if you apply some amount of force, they do not deform as much (not the technically correct wording, but close enough) - this is hardness. but simultaneously, when these defects form, they also act as psitions of “stress concentration” (imagine weak points). so more there are defects, harder they become, simultaneously, more likely to break (the likeliness to break is quantised by elongation at fracture, hardness has multiple quantisations, but we usually do some correlation-ary things (like measuring the area/depth of deformation made by some specific method))

• ⁨Comment⁩ on ⁨THE SIMULATION⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  probably the joke is that in simulations you have a lot of parameters, so even though code is same, not all of them would result in physically realistic situations. or your params were so bad that you ran out of memory or processes killed your system or shit, so even convergence bit works.

• ⁨Comment⁩ on ⁨Alpha decay go brrrrrrr⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  also, uranium's half life is 700 million years, so we expect (207/235)*7.5 (of lead) + 7.5 (uranium) ~ 14.106382978723405 lump.

  also, a lot of the helium produced will remain trapped inside (most heavy metal lumps act as sponges for little gasses). but 700 mil years is also a large amount of time, so much of it would diffuse out. I could checkup diffusion statistics for he d pb-u but i would have to probably do a double integral (as pb-u combination is not fixed, and we can not simply do the error function calculation), so skipping that. but it is safe to say that we will have a lump of ~50% U, 44% pb, and 6% He (by mass), and a significant amount of he will remain in

• ⁨Comment⁩ on ⁨We can't all be astronauts.⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  well vectors and matrices are both tensors, so and iirc, while writing by hand, we use lines to denote dimesions (1 and 2 respectively), and we use bold while typing

• ⁨Comment⁩ on ⁨We can't all be astronauts.⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  well i have learnt something, thanks. i usually just unitalicise names (so here, that would be moon and me, but not N, kg, m). I have seen units italicised a lot (professor notes, even papers), so i assumed it was accepted. i have seen normal ones too, and bold also (that is usually for vector quantities i think).

• ⁨Comment⁩ on ⁨Little Pea Shooters⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  if i remeber correctly, it just slings most of fast moving things around (roughly equally in all direction), and only slow moving things actually hit it.

  slung out of the system.

  that seems a bit too strong for jupiter, that seems more like suns behaviour

  Jupiter's pull is so great, compared to earth, that the ones that do get past or then pulled more towards the sun.

  this seems correct.

  but i have not actually done any courses on celestial mechanics, and mostly basing on yt videos that i watch, so you maybe are correct on this one.

• ⁨Comment⁩ on ⁨Little Pea Shooters⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  but jupiter also slings a lot towards earth too

• ⁨Comment⁩ on ⁨We can't all be astronauts.⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  they kinda are not. it is most likely typeset in latex, where in equation mode all letters by default get italicised. and it is kinda accpeted as appropriate typesetting.