WolfLink
@WolfLink@sh.itjust.works
- Comment on Is possible to learn to swim, just by reading a lot about it? 3 days ago:
I think I have had an instructor put a mirror in the pool before lol
- Comment on Is possible to learn to swim, just by reading a lot about it? 4 days ago:
I doubt someone who has only ever read about swimming could do it in deep, cold water. But they are talking about taking it to a swimming pool to practice. I think they’ll be fine.
- Comment on Is possible to learn to swim, just by reading a lot about it? 4 days ago:
Probably. Take it to the shallow part of a pool (where you can stand up if you need to) and practice until you are comfortable trying more.
Also, watch some videos. I think it’s easier to learn something like swimming by watching others than by reading about it.
- Comment on call of the void 4 days ago:
It’s a tool without a use case, and there’s a lot of ongoing debate about what the use case for the tool should be.
It’s completely valid to want the tool to just be a tool and “nothing more”.
- Comment on Oatmeal 6 days ago:
Coffee
- Comment on Gravity 1 week ago:
But can electromagnetism at all emerge if the quantum mechanics dont exist to emerge things like magnetism and some of the behavior of electrons?
Short answer: yes.
Technically the world can’t exist without all of its physics. But that’s kinda backwards from how you study it. Quantum mechanics isn’t “more correct” than classical mechanics, it’s more that it’s “more detailed”.
If you want to model an electromagnet, an electronic circuit, light (in most macroscopic situations), how permanent magnets interact, electrostatic situations like how static electricity makes your hair stand up, lightning, the magnetic fields of celestial bodies like the Earth and Sun (they are big electromagnets), etc. you will use “classical” electromagnetism (meaning Newton’s mechanics, possibly with Einstein’s modifications, and Maxwell’s equations).
If you want to model material science situations, like determining what material to make a diode or transistor out of, or if a given material can become a permanent magnet, you will likely need quantum mechanics to help model the interactions of electrons on the atomic scale. The section on Wikipedia you were looking at is about this kind of material science. You do this by combining the same “classical electromagnetic” equations with Schrödinger’s equations for quantum mechanics.
- Comment on Gravity 1 week ago:
diamagnetism, paramagnetism and ferromagnetism can be fully explained only using quantum theory
The magnetic properties of certain materials (e.g. why an unmagnetized piece of iron sticks to a magnet of either polarization), the way permanent magnets work, is best explained by quantum mechanics.
However, the electromagnetic force itself doesn’t “arise” from quantum mechanics, and you can explain things like electromagnets quite will without considering quantum mechanics.
Usually you take the “classical” formula for a force and to inform your quantum mechanical model of particles, and that’s how you can arrive at things like deriving how permanent magnets work with the help of w quantum mechanics.
Generally, a lot of material science and chemistry is inherently quantum mechanical because the way atomic orbitals and molecular bonds work is heavily quantum mechanical.
- Comment on Gravity 1 week ago:
Fundamental means it cannot be explained by being caused by something else.
Fundamental force means we expect a carrier particle to explain it (for gravity that’s the Graviton, although it hasn’t been detected yet).
electromagnetism is caused by quantum phenomena.
Not even remotely true.
What is the cause for spacetime or quantummechanics? Idk but somehow they don’t make it on the list of fundamental forces.
Quantum mechanics is mostly that statistics is more complicated than we all thought . Seeking a cause for spacetime is interesting. It might be relevant to mention that there is a fundamental particle that imparts mass, which we call the Higgs Boson. I guess that could make mass and inertia something of a “fundamental force”.
- Comment on Update to last week's BestBuy Shenanigan. They refused to refund me after not delivering me the stuff I ordered after a so-called "investigation". 2 weeks ago:
That’s kinda the way of the world in general unfortunately.
- Comment on The emulator that lets you play NES games in 3D has left early access on Steam 2 weeks ago:
They were able to prevent Dolphin’s release on Steam
- Comment on A metaphor for capitalism? 3 weeks ago:
- Comment on [deleted] 3 weeks ago:
Windows is designed to work on a very wide range of specs, so older devices as well as low-end newer devices should be able to run it.
That’s even more true about Linux. Many popular distros can be run on a raspberry pi, a 20 year old MacBook, or a state-of-the-art gaming desktop.
It’s less true about macOS because Apple has more control over the hardware so they can be pickier. Mobile developers also have more control over the hardware and can be pickier, although that’s less true about Android than iPhone.
- Comment on Ads when you’re pumping gas 4 weeks ago:
I have like a 70% success rate with this trick
- Comment on If we replace most plastic with a non plastic alternative and would that really be better? 5 weeks ago:
If you use reusable bags, bottles, and other containers, that’s way more sustainable than any single use product.
But using paper is still better than plastic, and yes, trees can be and are sustainably farmed in many parts of the world.
I have seen some shifts away from plastic. For example, Apple seems to have removed almost all if not all plastic from their packaging, replacing it with paper.
- Comment on what is north? 5 weeks ago:
Weddell sea is good, mentioning Antarctica is good, the word “North” is meaningless in this context which is what the OP is laughing about.
- Comment on Anon goes camping 5 weeks ago:
The chlorine tablets taste like ass IMO getting a good filter is the way to go.
- Comment on Anon goes camping 5 weeks ago:
The most common cause of symptoms like in OP’s story are multicellular organisms. While still microscopic, they are plenty large enough to get caught in a filter.
- Comment on Anon goes camping 5 weeks ago:
They clog and you do need to rinse them, and running (clean) water in the opposite direction is a common way to clean them.
They do eventually degrade or clog to the point of being unable to function and then you have to replace them. Usually they fail such that it gets slower to filter the water rather than letting dirty water through, although that’s not always the case. One time I had a cracked filter, and the symptom was the filtering went suspiciously quickly. I think I drank some only partially filtered water before I figured it out (didn’t get sick though).
- Comment on Anon goes camping 5 weeks ago:
Get a water filter that’s designed for backpacking. The two varieties I’ve seen are either a hand pump or using gravity to force the water through a ceramic filter. Try to pick water that is relatively clean looking (not obviously murky, and it helps to pick flowing water).
Best tasting water I’ve ever had and you won’t get giardia (the most common cause of diarrhea symptoms described above).
- Comment on Anon is an audiophile wannabe (he uses .mp3) 1 month ago:
They are usually ogg in game, if not some sort of proprietary midi format.
- Comment on I'd choose 4 tbh 1 month ago:
1 kills you because you need some fat to live
- Comment on Gave him an offer, then took it away. Thanks PayPal. 1 month ago:
Maybe but are you really going to hire a lawyer to sue when you don’t have a job to pay the rent?
I know someone who went through a similar situation.
- Comment on What would it mean for the world if America was confident they developed a technology that would act as a fool prove deterrent from nuclear attacks what would that mean for the rest of the world? 1 month ago:
The treaty isn’t the technology, it’s the result of people much better informed on the topic considering the scenario you are asking about.
The technology is the hypothetical anti-ballistic missiles.
- Comment on Spotify 30 minutes of uninterrupted... Just kidding 2 months ago:
Tbh I kinda don’t mind the podcaster ads when they put their own spin on it and are cute about it
- Comment on Pearson complaining about using Linux to access my course material 2 months ago:
Neither have I really. It’s the last one I used, which was like 5 years ago.
- Comment on Pearson complaining about using Linux to access my course material 2 months ago:
So that you can run the windows exclusive software in a virtual machine.
- Comment on Pearson complaining about using Linux to access my course material 2 months ago:
Time to download Virtualbox
- Comment on Philosophy moment 2 months ago:
“It’s fine if it’s in a bag and off or silent” has been cell phone policy in my experience (10-20 years ago).
- Comment on What are some FOSS programs that are objectively better than their proprietary counterparts? 2 months ago:
- literally any foss player vs. what MS offers - be it VLC, SMPlayer, MPV, anything is better than windows built in crap
FFMPEG is an open source command line tool and software library for audio and video encoding. You’ll find it mentioned in the credits of just about any video playing software ever, but you can also just go use it for free.
- Comment on What are some FOSS programs that are objectively better than their proprietary counterparts? 2 months ago:
I like GIMP but find Inkscape impossible to use