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Alts (mostly for modding)

@sga013@lemmy.world

(Earlier also had @sga@lemmy.world for a year before I switched to @sga@lemmings.world, now trying piefed)

  • 3 Posts
  • 61 Comments
Joined 1 year ago
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Cake day: March 14th, 2025

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  • From the reports that i have read (am indian), 20+ generics are expected, within roughly 2 months or so, with previous price being something along 10k INR (roughly 100USD) a month to about 3-4k INR (30-40 USD) a month. Drugs have always been kinda cheap here (as an example, a simple paracetamol (tylenol) tablet costs 1 INR (~1cent US)), so it is still expensive (for vast majority, it is more than 2-3 days of work), but much better. hope people use this cautiously though with reasonable expectations.






  • not my domain, so i looked the title online (the original article is in nature, and not open access, and currently not in uni, so can not access through uni wifi)

    here is a theoretical version establishing physics for this effect - https://arxiv.org/pdf/2505.23083v1

    I am also not reading the linked article, as it is too flowery for me.

    so here is a tl;dr - if you know seebeck effect, this should be somewhat easy. seebeck effect is a effect where if there is a temperature gradient in a material, electricity can be generated. i will not go on about why that happens, but as a statistical argument, just keep in mind that as things are heated, they jiggle (very specific physics term, definitely not me stupidifying oscillations). if it is a “bond” between two atoms (aptly named atomic bonds), we consider a quantisation (fancy way to put number to how strong the vibration is, there is more to it, but not for now) of these oscillations as phonons. another thing is that in materials, these bond are often arranged in some special manners. for most materials, these arrangements are periodic lattices, (think junglee gym bars or rubik cube or some other periodic arrangement). in these materials, phonons can often transfer in different modes, always trapped by the ends. in some materials, these bonds can form helices, where phonons instead of going in straight line, will travel across the helix. if you know what angular momentum is then great, if not, think something with some “speed” going in circles. in that case it will have some angular momentum along the axis of that circle. coming back to main topic, here we have some phonon going across helix, having some angular momentum. now essentially this motion of phonon can create spin current. this requires us to go into separate tangent, abou what spin is, which is well hard to explain. in most materials, there are 2 types of electrons, and we just name these 2 spins up and down (and it has practically nothing to do with up or down directions). as to why there are only 2, is a really big topic we are not going into. but roughly, it is because of nature of material. in non magnetic materials, they behave same, but in magnetic materials, they do not. in some other words, you can say magnetic materials are magnetic because these 2 spins behave differently in these materials. in normal current, we have electrons going from 1 direction to another (kinda, but that is tangent to tangent, not going there). in spin current, these 2 electrons flow in opposite directions. since both are electrons, there is no charge difference created, a spin potential is created. this tudy showed that in non magnetic materials (tungsten and titanium), you could generate spin currents by “injecting” a angular momentum from quartz crystal phonon. if yo have ever heard of angular momentum conservation, this is a consequence of that, as spin current is a kind of angular momentum.

    as to why this could be special, spintronics (the name for using electron spin instead of charge for generating currents and making devices) requires lower power than electronics. one of the problems was that you required special magnetic materials, this is a demonstration without magnetic materials.

    in my physics world, this is big (in a scale of 1 to 10, 10 being theory of everything done, 1 being boring desk work - this is 5-7 - very big in spintronics, and reasonably big electronics), but to someone outside -not that big, like for decade(s). we made first transistors in 50s and 60s, an reasnable electronic devices (the semiconductor chips) by 70s and 80s. we made first spin transistors in 00-10s so i guess another 10 or so years before we see some industry level production.




  • as someone who is doing some kind of science - titles are a lot more fancier and designd for absurdity. Often, the decision to perform something is a lot more logical than dciding random animals to test from. for example, some of the people from their group may already have been studying that specific frog line for some reason (maybe for it’s gut only), for example, they may have observed that these frogs live a long life or something, then they decided to find why is that, and may hav ecome to conclusion that it is this gut bacterium. or maybe they may hav eknown of this bacterium, and found out where they could source more of this.

    but sometimes, it is totally random luck, lik you accidentally messed up experiement, and spilled some unrelated gut juice from a frog from a separate experiment, and it just so have happened to worked, so you now studied it closely.

    I have absolutely no idea what may have happened in this one, and i am not a biologist, so do not know what is the usual way, but it is usually among these.






  • Takes a lot more than a dozen or so downvotes to discourage me

    that is great. I do not know if you (or anyone else for that matter) may think this community or melly/piefed or fediverse in general is like this, and so wanted to say sorry (as a member/mod of this comm).

    I do not even have a ad-blocker. I just have global js disabled and some css rules - goes a very long way and almost no website complaints, is lighter for my browser (though i also have /etc/hosts rule in case something passes by).