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abraker's math/science corner

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Topic Starter
abraker
Inspired by patatitta's and Winnyace's corners. Unlike Winnayace's corner this will be legitimately boring.

I watch youtube vids on math and science so I'll have something to post here a few times a week. Let's begin with...






Patatitta
i'm afraid that we may run out of corners soon
Polyspora
I think this is the ultimate abraker thread. you cant be more abraker than this
Karmine
Oh yeah I love nerdy shit. Will watch those when I have the time.
MangaGrumpy
Fermat's last theorem
Reyalp51
i wonder if i did a vtuber corner, would it be more active than my otaku culture thread or would it die quick
Karmine

Reyalp51 wrote:

i wonder if i did a vtuber corner, would it be more active than my otaku culture thread or would it die quick
Don't.
Polyspora

Karmine wrote:

Reyalp51 wrote:

i wonder if i did a vtuber corner, would it be more active than my otaku culture thread or would it die quick
Don't.
Reyalp51
im seeing a lot of postive post this is a good sing
Patatitta
honestly I used to watch those videos a while back but then I realized that I wasn't really understasnding shit even if it seemed cool so I deemed it not worth it
Karmine

Patatitta wrote:

honestly I used to watch those videos a while back but then I realized that I wasn't really understasnding shit even if it seemed cool so I deemed it not worth it
Some are more accessible than others. Even the ones that are hard to understand are interesting though.
Even when they feel like that:
Topic Starter
abraker

Patatitta wrote:

honestly I used to watch those videos a while back but then I realized that I wasn't really understasnding shit even if it seemed cool so I deemed it not worth it
I followed maybe 10% of that quantum mechanics vid and I had to go through 3 sittings to finish it. The math is def waaaayyy more than even what my feeble mind can handle, but on the higher level, I found it very interesting

Honestly I don't follow most math but the nice animation and graphics allow me to understand what's going so much better. And in turn it sparks thoughts in mind on what the implications are and where it can go from there.
Topic Starter
abraker


What happens when you let your pc randomize a bunch of programs written in brainfuck
vi_xlt
oooh~ abraker thread, interesting
ClevelandsMyBro
i hope everyone just post their calculus assignment
keremaru
can you post a video that goes over how wavelengths correlate to Euclidean space through dot products
Topic Starter
abraker
This vid does a pretty good job explaining what the spin number measures. Don't expect for it to explain what spinors are tho.

Jangsoodlor

ClevelandsMyBro wrote:

i hope everyone just post their calculus assignment
community/forums/topics/1802213?n=1
ClevelandsMyBro

Jangsoodlor wrote:

ClevelandsMyBro wrote:

i hope everyone just post their calculus assignment
community/forums/topics/1802213?n=1
guess the last poster btw
Topic Starter
abraker
Topic Starter
abraker
Introducing Hafnium.

It's an interesting material that has various relatively stable isotopes while in the excited and not excited state. That means it has a verrrry long half-life and emits very little radiation.

Since it is stable between excited and non excited states it allows to store and release energy. It's possible to use it as a battery. It's also possible to excite it using gamma photons similar to how a lazer works.

Anything that is able to store significant energy can be used as a bomb. This can indeed store significant energy, and using gamma radiation, can cause quite an explosion. 3x the regular nuke, but fortunately without radioactive contamination. Don't worry tho, that would require portable gamma lazers and the smallest ones we made are kilometers in size.

Corne2Plum3
Topic Starter
abraker
13,000 feet deep into the Pacific Ocean a mix of various oxide minerals was discovered to produce oxygen via electrolysis. For reference, the stuff needs to have at least 1.5 volts to split seawater molecules into hydrogen and oxygen. This is huge because is the first time we see something that's not alive naturally produce oxygen.

https://futurism.com/the-byte/dark-oxygen-deep-ocean
Karmine
I like this channel:


My small brain can understand it.
z0z

Karmine wrote:

I like this channel:


My small brain can understand it.
now if only i was skilled enough to really pursue a more stem-heavy major

science is fun
Karmine

z0z wrote:

Karmine wrote:

I like this channel:

My small brain can understand it.
now if only i was skilled enough to really pursue a more stem-heavy major

science is fun
Same, went into computer science because it was easier than physics lol.
It was indeed easy af.
Topic Starter
abraker
A very nice video the shows how you can create quantum particles out of a long chain of pendulums. While the resultant particles have slightly different behavior than the real deal (the chain of pendulums allows 1D space instead of 3D space), it comes very close to showing what is really going on and how. Spoiler: it's all waves. Always has been always will be. Wavy waveee reality~~~~~~



This makes me want to simulate wave mechanics so >_<
z0z

Karmine wrote:

z0z wrote:

Karmine wrote:

I like this channel:

My small brain can understand it.
now if only i was skilled enough to really pursue a more stem-heavy major

science is fun
Same, went into computer science because it was easier than physics lol.
It was indeed easy af.
actually making it difficult to determine a good major to go in
Topic Starter
abraker

z0z wrote:

actually making it difficult to determine a good major to go in
Computer engineering can pay a lot if you are good at it (FPGA & embedded stuffs). That's software for automobile, routers, medical machines, defense, etc. I don't believe it's as competitive as web dev cs crowd, but many who major in computer engineering do tend to switch to cs pretty fast because they don't like it (like Roshan).
z0z

abraker wrote:

z0z wrote:

actually making it difficult to determine a good major to go in
Computer engineering can pay a lot if you are good at it (FPGA & embedded stuffs). That's software for automobile, routers, medical machines, defense, etc. I don't believe it's as competitive as web dev cs crowd, but many who major in computer engineering do tend to switch to cs pretty fast because they don't like it (like Roshan).
problems, i'm a rising junior so i would have to somehow arrange my classes in a way that i can remain graduating on time and also i'm not sure i'll be good at engineering

i was only good enough to pass some science classes
Topic Starter
abraker

z0z wrote:

abraker wrote:

z0z wrote:

actually making it difficult to determine a good major to go in
Computer engineering can pay a lot if you are good at it (FPGA & embedded stuffs). That's software for automobile, routers, medical machines, defense, etc. I don't believe it's as competitive as web dev cs crowd, but many who major in computer engineering do tend to switch to cs pretty fast because they don't like it (like Roshan).
problems, i'm a rising junior so i would have to somehow arrange my classes in a way that i can remain graduating on time and also i'm not sure i'll be good at engineering

i was only good enough to pass some science classes
with that line of thinking you are not going to get far
instead thinking "I don't think I'll be good at" or "im only good enough for x" think about what spikes your interest and look more into it.

I looked into coding looooong before I went to college. My 2nd year in highschool I looked up tutorials online and started out making games in command prompt. I thought that was so cool I continued and that allowed me to build the skilset. I was also fascinated about tech even then and joined my highscool's robotics club.
Achromalia

abraker wrote:

z0z wrote:

abraker wrote:

z0z wrote:

actually making it difficult to determine a good major to go in
Computer engineering can pay a lot if you are good at it (FPGA & embedded stuffs). That's software for automobile, routers, medical machines, defense, etc. I don't believe it's as competitive as web dev cs crowd, but many who major in computer engineering do tend to switch to cs pretty fast because they don't like it (like Roshan).
problems, i'm a rising junior so i would have to somehow arrange my classes in a way that i can remain graduating on time and also i'm not sure i'll be good at engineering

i was only good enough to pass some science classes
with that line of thinking you are not going to get far
instead thinking "I don't think I'll be good at" or "im only good enough for x" think about what spikes your interest and look more into it.

I looked into coding looooong before I went to college. My 2nd year in highschool I looked up tutorials online and started out making games in command prompt. I thought that was so cool I continued and that allowed me to build the skilset. I was also fascinated about tech even then and joined my highscool's robotics club.
uh-huh anyway i curse you with low volition <3 anything you're interested in is too tiring for you to pursue now

...

mm, i would hope to agree though, ideally i would want to imagine that interest would be a reliable determining factor of what would be best to healthily pursue and maybe be challenged with

ultimately though there are a far greater range of fears around being ill-equipped for what exactly would be taught, and it's difficult from an unfamiliarized perspective to really intuit what you would realistically hope to see from majoring in something when you're learning a particular frame of perspective and scope of application about that subject that may entirely contradict/shatter/distort/defeat your interest in it (or alternatively you could even be disillusioned with the broader consequences of your role in a labor market for company practices you don't want to participate in or something-- imprecise but its close to what i mean, moral objections that nullify the time and effort and Money invested, basically)

like i could apply for some academic track that i think would cover what i love but i would fear something like bieng easily mistaken about the implications and consequences and logistics of that study in practice. it sort of starts to feel like you need absolute full context before pursuing something that already Costs you so much to the extent that the institution itself is plausibly known/recognized more for being a source of years or decades of debt rather than what information it supplied you with

im not quite sure how to articulate this, but, something like that, maybe
z0z

Achromalia wrote:

abraker wrote:

z0z wrote:

abraker wrote:

z0z wrote:

actually making it difficult to determine a good major to go in
Computer engineering can pay a lot if you are good at it (FPGA & embedded stuffs). That's software for automobile, routers, medical machines, defense, etc. I don't believe it's as competitive as web dev cs crowd, but many who major in computer engineering do tend to switch to cs pretty fast because they don't like it (like Roshan).
problems, i'm a rising junior so i would have to somehow arrange my classes in a way that i can remain graduating on time and also i'm not sure i'll be good at engineering

i was only good enough to pass some science classes
with that line of thinking you are not going to get far
instead thinking "I don't think I'll be good at" or "im only good enough for x" think about what spikes your interest and look more into it.

I looked into coding looooong before I went to college. My 2nd year in highschool I looked up tutorials online and started out making games in command prompt. I thought that was so cool I continued and that allowed me to build the skilset. I was also fascinated about tech even then and joined my highscool's robotics club.
uh-huh anyway i curse you with low volition <3 anything you're interested in is too tiring for you to pursue now

...

mm, i would hope to agree though, ideally i would want to imagine that interest would be a reliable determining factor of what would be best to healthily pursue and maybe be challenged with

ultimately though there are a far greater range of fears around being ill-equipped for what exactly would be taught, and it's difficult from an unfamiliarized perspective to really intuit what you would realistically hope to see from majoring in something when you're learning a particular frame of perspective and scope of application about that subject

like i could apply for some academic track that i think would cover what i love but i would fear something like bieng easily mistaken about the implications and consequences and logistics of that study in practice. it sort of starts to feel like you need absolute ful context before pursuing something that already costs you so much to the extent that the institution itself is known/recognized more for being a source of years or decades of debt rather than what information it supplied you with

im not quite sure how to articulate this, but, something like that, maybe
ngl my ass just can't really get to doing much self-study

it's very possible that my attitude did push me into a wall for college and i do think cost is a pretty big reason
Topic Starter
abraker

Achromalia wrote:

like i could apply for some academic track that i think would cover what i love but i would fear something like bieng easily mistaken about the implications and consequences and logistics of that study in practice. it sort of starts to feel like you need absolute ful context before pursuing something that already costs you so much to the extent that the institution itself is known/recognized more for being a source of years or decades of debt rather than what information it supplied you with
Funny you say that because my first semester in college I did not have a major and was undecided. What? Abraker, but given all you told us surely you would go computer science major, right? Well that's what I thought I wanted to do, that's what I liked, but it's also what I have known best. And that was an issue to me because I would spend first 2 years being taught what I already learned myself. The other option was computer engineering technology, and that too deals with stuff I like but also stuff I knew much less about at the time. Working with actual circuit board hardware coding instead of just computers unlocked a new path for me.

So if it comes to choosing major related to something you already know, try going for a close alternative that will help supplement what you already do know.
Achromalia

z0z wrote:

ngl my ass just can't really get to doing much self-study

it's very possible that my attitude did push me into a wall for college and i do think cost is a pretty big reason
mmyeah, i wonder if sometimes you're just immediately and fundamentally disadvantaged from just not being fortunate enough to be well-conditioned or predisposed to a certain perspective with a certain range of conditions for persistence...

i'd probably struggle, maybe, because of a generalized failure to persist and remain attentive in my interests + a highly fearful profile of avoiding anything that seems even remotely close to being regrettable, while failing to avoid the regrettable position of inaction itself
z0z

Achromalia wrote:

z0z wrote:

ngl my ass just can't really get to doing much self-study

it's very possible that my attitude did push me into a wall for college and i do think cost is a pretty big reason
mmyeah, i wonder if sometimes you're just immediately and fundamentally disadvantaged from just not being fortunate enough to be well-conditioned or predisposed to a certain perspective with a certain range of conditions for persistence...

i'd probably struggle, maybe, because of a generalized failure to persist and remain attentive in my interests + a highly fearful profile of avoiding anything that seems even remotely close to being regrettable, while failing to avoid the regrettable position of inaction itself
if a person decided to roll the dice on a new life that may improve their situation, since most life on earth is bacteria, they'll probably just be a bacteria or some unknown alien organism

but yeah i am fundamentally disadvantaged compared to the average american
Achromalia

abraker wrote:

Achromalia wrote:

like i could apply for some academic track that i think would cover what i love but i would fear something like bieng easily mistaken about the implications and consequences and logistics of that study in practice. it sort of starts to feel like you need absolute ful context before pursuing something that already costs you so much to the extent that the institution itself is known/recognized more for being a source of years or decades of debt rather than what information it supplied you with
Funny you say that because my first semester in college I did not have a major and was undecided. What? Abraker, but given all you told us surely you would go computer science major, right? Well that's what I thought I wanted to do, that's what I liked, but it's also what I have known best. And that was an issue to me because I would spend first 2 years being taught what I already learned myself. The other option was computer engineering technology, and that too deals with stuff I like but also stuff I knew much less about at the time. Working with actual circuit board hardware coding instead of just computers unlocked a new path for me.

So if it comes to choosing major related to something you already know, try going for a close alternative that will help supplement what you already do know.
not that you can't be performatively shocked in order to express or illustrate your points more, but it seems to be kind of presumptive and dismissive

...at the same time, you could be right, i wouldn't know because i haven't been in a position where i could feasibly apply it and understand what it looks like

hmmn, this is difficult to find words for, words that can better illustrate what exactly is happening in my mind with it... i'm not sure if i'm able to read how what you're saying actually addresses what i mean by those statements. to prod and maybe clarify further for myself, what would you do if you find that the time you've invested in that close alternative is itself also subverted by finding out you may not be able to apply it as you originally sought to from your own interests? what if instead it's abstracted or localized to a particular range of expertise that focuses away from the software and hardware and sciences you love/know and instead directs it to something more businesslike or administrative, or otherwise if it points the likely careers you're trained for in a different realm entirely to what your interests were settled on?

but like, note that i dont mean to imply you're misunderstanding something bc i dont really know that, i probably am just not reading correctly from what you're suggesting or trying to convey

in my case, i don't know what i realistically am able to imagine myself doing with college/university, though i seem to believe i'd love to work/explore with art (and maybe animation) and music (production-oriented) and game development and web development

but i have other interests as well, often more sociological or behavioral-science related, but i would fear things around how they may be centered around applications that are restricted to a few kinds of professions i'm not interested in that i may not even be able to access anyway, and where everything i learn is skewed to that instead of my scope of possible interdisciplinary interests in how sociological phenomena connect with other ecosystems of psychology or infrastructure or philosophy or policy

other interests like a subtle inspiration from architecture and interior design is involved too

for me it's just not really clear what that all looks like in practice, and i am very very risk-averse about active decisions toward something that i don't understand the implications of
Topic Starter
abraker

Achromalia wrote:

in my case, i don't know what i realistically am able to imagine myself doing with college/university, though i seem to believe i'd love to work/explore with art (and maybe animation) and music (production-oriented) and game development and web development
Well I know you to be a music artist, so that's the primary direction in my mind I figured you would go for. Mind you, I was totally unaware of the other interests you mentioned you have. So given the previous train of thought, that music is your interest, and contingently are really good and are improving at it, I see you going for that in college. Then applying my suggestion would have you go for something supplemental to music production in college. Now I have no idea what majors exist in the relm of music, but suffice to say, it would be most useful if it provides you knowledge enabling you to create sellable works in the future.
Manishh
Anything on that new discovery where ocean rock produce oxygen
Luqanted
brudda i missed ur science stuffs im just enjoying rn to see that ur still the same since the old days
Topic Starter
abraker

Luqanted wrote:

brudda i missed ur science stuffs im just enjoying rn to see that ur still the same since the old days
<3
- Marco -
ah, yes "science" and NOT MAGIC! of course !

Topic Starter
abraker
A gamma ray burst was observed 2 years back that happened 2 billion light years away. Because it was pointed right at us, it was the brightest one we have ever seen. So much so it blinded many of the telescopes that are used to see such things, and had a measurable effect on the Earth's magnetosphere and atmosphere (slightly more ions, tiny fluctuations in magnetic field, that sorta stuff).

Scientists use a standardized method of statistical analysis to determine its emission spectrum (think of it as putting a light through a prism and seeing what the colors are). Certain atoms reflect certain wavelengths of light, certain atoms absorb. This emission spectrum would tell what something is made out of. Scientists have long thought that gamma ray bursts have a smooth emission spectrum - they are made of just energy.

Now comes this new paper. A scientist decided to do a different type of statistical analysis and it revealed a spike at 12 Mev. For reference, electron-positron annihilation (matter and antimatter) produces gamma rays at 1.02 Mev. In fact, the paper says it's likely electrons and postitrons. The way you get 12 Mev from 1.02 Mev is traveling at 99% the speed of light. So the gamma rays are blueshifted as they come toward us.

So now scientists need to go through all previous gamma ray bursts and see if this spike exists in those as well. Most would be much harder to analyze because we got lucky this thing was so intense and pointing right at us. If they do find spikes, then it would be another step to figuring out how these GRBs are made.

Topic Starter
abraker
Scientists have detected anti-helium in space. The weirdest part is the large number of detections of the stuff AND in different isotopes. To give you a perspective on why this is so weird: anti-matter is REALLY rare. Like positrons are detected as a result of particle collisions with the atmosphere because they absolutely dont last long before running into normal matter annihilating it. Anti-hydrogen is even rarer. That stuff is expected to be detected as anti-protons from stuff like neutron star collisions. Now anti-helium is an entire different ballpark. You need two anti-protons AND one or two anti-neutrons, and both cases were detected. Basically that stuff shouldn't exist. So begins the hunt for where where the stuff came from

Karmine
Chad Sabine enjoyer.
Tad Fibonacci
All this science and abraker still can't make vaccines for Trashipitus
Topic Starter
abraker

Tad Fibonacci wrote:

All this science and abraker still can't make vaccines for Trashipitus
I am close, I feel it

Topic Starter
abraker
The Wow! Signal is a famous signal that was observed around the beginning of radio astronomy. Back then it was hypothesized that if aliens would communicate with other aliens they don't know the language or technology of, the most likely radio frequency they would do it on is the one where hydrogen emit photons when its electron is flipped. When observed it was the most, and still is, one of the most powerful signals seen at that frequency. So the scientific community got excited because that might me aliens are really out there. However, it was never seen again, so this made it unlikely it was aliens. Scientists would spend decades trying to explain what the signal is and where it came from.

Now there is explanation of what it is: A radio laser! So it turns out when a star flares up, either through a coronal mass ejection or some other process, that ionized material is able to mix with hydrogen rich nubulae, producing conditions just right to cause the hydrogen atoms' electrons to flip and make photons at just that frequency. And if you consider a magnetar, a neutron star with a very powerful magnetic field, then you basically get a radio death ray of astronomical proportions.

Topic Starter
abraker
A REALLY nice video that explains probability, mathematical formula for surprise, and the cross-entropy function used in machine learning algorithms





A video that derives the formula for surface minimization based on how soap bubbles get tighter. Unless you have Calc 3 under your belt this might look alien to you

Jun Maeda
Winnayace
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