Archived threads in /sci/ - Science & Math - 448. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
Can anyone tell me what these landforms are? They look like snowcapped mountains, but given the region (near Baghdad) that seems unlikely
This may be the wrong board, sorry
Coordinates?
>>7787297
33°52'56"N 44°10'7"E
>>7787288
I'd say it's simply small clouds forming above plantations. You can tell because they have exactly the same shape as the forests underneath
I need some help with probabilities. Anyone on that feels comfortable giving me a hand?
It's literally the easiest niche within math because it applies seamlessly to real life.
>>7787273
Go away
https://www.khanacademy.org/search?page_search_query=probability
>>7787287
how far into probability have you gotten lol baye's?
get rekt scrub
![1-submandibular-lymph-nodes[1].jpg](https://i.imgur.com/HGcoLa7.jpg "1-submandibular-lymph-nodes[1].jpg")
I love to pick at my submandibular lymph nodes (The ones behind your jaw). I do this very frequently, since it feels like a testicle (If you're a dude and like to play around with your balls, you know what I mean).
Is this normal?
>>7787252
No, but normal is boring. Don't pick the skin off.
I've had my lymph nodes removed.
>>7787252
sometimes after i eat i have weird pain/swelling where the picture indicates submandibular nodes.
it's either that or my salivary glands. whatever it is its always the left side and sensitive.
Hi /sci/
I took engineering in uni and it felt like we did a decent chunk of math throughout. Not anywhere near the real math degrees, but we had some decent fundamentals down.
I graduated half a decade ago and I've been working a dead end job where I use nothing I learned at school
I just recently came across a problem where I needed to get the position of something given velocity, acceleration and time. That's straight up high school stuff, and its one of the basic kinematic equations for uniform acceleration.
But the thing is, I didn't...
Comment too long. Click here to view the full text.
>>7787209
I've seen this recommended on /sci/ a lot.
http://www.amazon.com/Mathematical-Methods-Physical-Sciences-Mary/dp/0471198269
but the pdf of it I just downloaded is ~860 pages, so that probably doesn't fit the 'compressed/ refresher' description
>>7787231
Looks good, I'll check it out
>but the pdf of it I just downloaded is ~860 pages, so that probably doesn't fit the 'compressed/ refresher' description
Well if its just one book thats pretty good desu. What I meant was more like, I don't want to look up each of my courses, get a similar textbook (or just find the original in my garage if I still have it) and work through things that way
>>7787209
>Are you all able to quickly spit out the really basic stuff you learned in highschool and university ?
After 18 years in industry, most of my colleagues that I've worked with can't. Hell, some of them that were particularly weak couldn't remember that stuff a year after graduating. I can (mostly) and it really impresses people.
>Do you have any suggestions for how to refresh all this stuff? I'd like to maybe spend three or four...
Comment too long. Click here to view the full text.
What the fuck is wrong with the US education system?
>every school having different standards of GPA
>taking some shitty multiple choice test to decide where you'll be
>can take as many as possible, rewarding people who can go for tuition and spam tests like nobody's business
>people with no money fuckin just lose out
Unlike the UK,
Where
>A levels always test what you learn in school
>open...
Comment too long. Click here to view the full text.
>>7787205
we're no longer a colony. We don't care.
>people with no money fuckin just lose out
Reagan's America is a delusional meritocracy full of victim blaming shitheads that unironically believe pulling yourself up by your bootstraps is possible.
Literally a satanic country, not the good kind either.
>>7787205
US uni admissions are almost pridefully antimeritocratic. Standardized tests aren't as influential or as useless as you think, though. The SAT is a fairly good measure of reasoning ability, and many schools here are now "test-optional."
The issue of grades is where it really fucks up big. Especially in humanities classes. Look at an IB english rubric. Take time to really appreciate the level of ambiguity and amount of "professional discretion" assessing someone's work takes. Now imagine none of your papers are eternally moderated, that your one teacher is the first and final authority on what you score, and that the rubric itself has been replaced with one -the teacher wrote herself- to include as much discretionary power as possible so she may block students with whom she disagrees or ones she dislikes from top universities with artificially low grades and give out artificially high grades to students she likes, agrees with, or is successfully manipulated by. You have imagined American high school.
I shit you not, I even got this treatment in math. One test question asked to find lim x->0 of sin(x), so I wrote "sine is continuous on R. By the def. of continuity, lim x->0 sin(x)=sin(0)=0" and got no points. Turns out I "hadn't shown my work" because his markscheme explicitly said I had to say sin(x) "gets closer and closer to 0 as x gets closer and closer to zero." Which, call me crazy, seems precisely a verbal restatement of the equality I wrote down after my actual fucking argument. And yes, I raised the issue very respectfully with him. He gave me the runaround for a good fifteen minutes and made it clear he wouldn't correct my score. There were about a hundred of these landmines throughout the course, and he was much more sympathetic when they hit certain people.
Now you fill me in on how UK uni admissions, offers, predicted scores, etc work. Is whether you get a spot just based on your A-level results, are there other (exploitable) factors?
Hello /sci/, since you (or /lit/) are considered the genius tier of 4chins, I bring my question to you.
What is the most up to date philosophical equivalent of Newton's (or Whitehead/Russel's) Principia? I'm looking to read THE book on philosophy no matter how long it takes me, but I'm not familiar with any modern philosophers. Bonus if it involves mathematics/science, but I'm looking for something along the lines of the ultimate book of knowledge avaialble to modern man.
>i'll ask /lit/ too to avoid bias
>>7787199
>I'm looking for something along the lines of the ultimate book of knowledge available to modern man.
wikipedia.org
>>7787203
The problem is in how you're wording your question OP.
Newton just did some infinitesimal calculations of motion and defined what a force was + astronomy. He wasn't even recognized until 100s of years later. Decarte was more popular with his theory of vortices, but people were like 'Oh shit, Newton's better' in 1800's.
My guess is that you want to learn Logic, because that's the underpinning of any argument presented for Metaphysics, Aesthetics, Ethics, etc.
Hello fellow anons.
Im interested to see how many of you are productive without some form of drugs be it caffeine, weed, alcohol, nicotine, etc. etc. Do you find yourself more productive under the influence of these?
Have you tried to be productive without them? What was the result?
>>7787100
All I "take" is caffeine in the form of coffee
I drink a lot because I really like coffee, not because I need the buzz, although I am mildly dependent on it
I quit once and I felt sluggish and had headaches every day for about a week, then went back to my coffee levels of productivity. Decided I missed my coffee and went back to it.
>"State-dependent memory, or state-dependent learning is the phenomenon through which memory retrieval is most efficient when an individual is in the same state of consciousness as they were when the memory was formed. The term is often used to describe memory retrieval while in states of consciousness produced by psychoactive drugs – most commonly, alcohol, but has implications for mood or non-substance induced states of consciousness as well."
https://en.wikipedia.org/wiki/State-dependent_memory
To simplify it for...
Comment too long. Click here to view the full text.
>>7787100
Yeah, I'm much more productive while on a stimulant (usually an amphetamine derivative), however, I don't want to get in the habit of using them often like I've seen many of my stupid straight-edge-now-turned-addie-fiend high school friends do when they hit college. Actually I'm just thinking of one guy in particular lol
I use them to study twice a year.
I don't drink coffee or smoke usually. I use cannabis every other day but that's just to relax at night. I drink about...
Comment too long. Click here to view the full text.
What is /sci/'s opinion of Data Science? I work in claims analytics for an insurance company and they're flooding our department with money to buy data from vendors. It's like executives got sold on big data from consultants or something. As far as I can tell it's just statistics + exploiting massive computation power.
I too have wondered about these two new memes, data science and big data.
In recent months I've seen city buses where the entire bus is plastered by a local university's masters in data science degree so there's a lot of money behind the meme.
>>7787167
The infographs made about data science and data scientists certainly don't help to dispel the accusations of memery.
So, why are you still here /sci/? If any of you were productive members of society and or had any ingenuity (besides shit posting) you wouldn't be here, in fact you wouldn't even know this shit hole of a website existed.
>>7787050
because 4chan does make me happy and I am having fun
the lack of deep thought on this website doesn't justify a complete condemnation of ever using it
>>7787050
It's the weekend, I'm tired of studying, and friends/gf are asleep.
>>7787050
The maths guide in the sticky is really great. But I would bet my life that nobody has discovered it, read it and then carried it out fully.
>Longevity probably wont be discovered in our lifetime.
>Our species will probably kill itself before the sun explodes.
>Our galaxy will burn itself out eventual.
>Our universe is plagued by eventual mortality.
>Alt Universes and The Big Crunch and anything else even remotely suggesting universal survival are now science fiction crackpot theories made and supported by optimists.
>Its all pointless...
Comment too long. Click here to view the full text.
do math, smoke weed, get laid, read books
HELLO.
I HAVE TWO QUESTIONS:
1. WHAT THE "FUCK" IS THE RELATIVE ORIENTATION OF THE ORION NEBULA ("M42")? I HAVE FUTILELY SEARCHED ONLINE FOR ANY RELEVANT INFORMATION; IT SHOULD NOT BE THIS DIFFICULT TO FIND OUT.
I WANT TO KNOW WHERE DOES THE "OPENING" OR "MOUTH" OF THE NEBULA POINT, RELATIVE TO AN OBSERVER ON EARTH; "UPWARD", TOWARD ORION'S HEAD, OR "DOWNWARD"?
2. THERE ARE FOUR PRIME "STARS" THAT COMPOSE "ORION'S SWORD"; THEIR NAMES ARE "HATSYA", "M42",...
Comment too long. Click here to view the full text.
HELLO?
I can't tell you about that, however, I can tell you where else fragments of Heraclitus can be found, besides the ones you are already aware of.
>>7787215
TELL ME.
![18xm8yhv139a0jpg[1].jpg](https://i.imgur.com/tjl0bck.jpg "18xm8yhv139a0jpg[1].jpg")
Am I the only one who finds subatomic experimentation to be spooky business?
>>7786893
Probably because you don't understand it.
>>7786907
Do you?
>>7786918
From the theoretical side. (i.e. I've taken courses in QFT & the Standard Model)
So I know that the experiments the perform are perfectly reasonable and the results they gather line up well with theoretical predictions.
Is there any practical application to astronomy and astrophysics or is it just useless stargazing? Seems to me everything useful to do with space is aerospace engineering.
>>7786885
They help us understand the universe along with physicists. Understanding how our solar system work also helps aerospace engineers design spacecraft. Most of it is research, but some of it is actually applied. Learn to google.
>>7786899
>Understanding how our solar system work also helps aerospace engineers design spacecraft.
How does knowing the planets revolve around the sun have anything to do with rockets aside from planning the course which isn't rocket design but the mission?
There is no heaven and we are all going to die.
Assume that is true.
Now how can we change that.
Imagine humanity far into the future. Time travel perfected, teleportation, growing of bodies, transferring of minds.
Can we in the future create heaven and save everyone that has died?
>>7786877
Yes.
>>7786877
>Imagine an imaginary world.
>Can we do x?
You can do anything you want in your imaginary world.
>>7786877
>transferring of minds
You just answered your own question.
If we can transfer a persons mind into someone or something else, then there is no reason we couldn't place that said mind into a "heaven-like" simulation. Reminds me of the show Caprica.
Okay, /lit/ person here, you guys are supposed to be smart and all that shit, please, tell me whether this guy should be considered a /sci/ posterboy, or if he's just another incomplete autist, not quite socially defunct enough to be genius.
https://www.youtube.com/watch?v=_6hXF-vn0E4&list=PLLAEOEDYzBHhq3FKQ8LpXaRf68vYCsMAg
Why you posted vid number 3?
Also that intro got my autism senses well tingling.
