Archived threads in /sci/ - Science & Math - 138. page
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If I was in a room with a super-powerful lightbulb that only emitted light of frequency higher than what humans can percieve, would the room be completely dark to me?
>>8082511
Yes
>>8082511
obviously. You don't see infrared or radiation do you?
Hey /sci/
How do I get better at math? I mean really better. How do I develop an intuition and make connections to solving problems I haven't seen before?
I'm in calculus 1 and I'm struggling a little. I'm an older student, I didn't take math for a long time, but I decided to go back to school and major in it. I took a pre-cal class after almost 8 years of not studying math and did fine. Got an A.
I can plug and chug just fine. I can crush problem sets. I attend the lectures, I understand what's happening in lectures and after...
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>>8082509
Practice then practice some more then practice even more once you've got it down
This is how you get good at anything in life
WORK MORE PROBLEMS
>>8082509
what the fuck is on that blackboard?
>>8082651
Literally nothing. It's basically just doodles structured in a way to look like there is something complex or deep or technical going on, but there's not.
I'm currently in my first year of college ill be majoring in astrophysics. Where can i get an entry level job that is at least somewhat related to my field?
>>8082332
museum/planetarium jobs are extremely competitive due to the fact that universities pump out far more physics/astrophysics majors than are jobs created by the market
your best bet (and it's not a very good bet) is to go for grad school & pray you get into a good grad school, complete a phd & pray your phd is compelling/interesting, apply for post-doc positions & pray you actually get accepted/get accepted into another distinct good school, apply for tenure track jobs & pray you get one
note...
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>>8082332
The fact that having a PhD has become less and less powerful over the last century, to the point where it's highly unlikely you'll get a tenure position, is largely due to the relaxation of admission standards at the undergraduate level. Applicants are getting lower quality each year, class sizes are increasing, and yet professor positions remain largely the same number.
Alternatively, if you do work in some physics related field that employs advanced & interesting numerical methods then there's...
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>>8082345
is the stem field really that fucking depleted?
You should know this.
physics major here, assuming the typical assumptions
C raises all the way up.
C drops as B raises
B drops as A raises
B raises as A raises
C raises as B raises
C hits the top last
in short C raises first and last
20
Hi I wanted to know am I schrizophrenic?
I rarely, but see hallucinations like I might get noodles confused with intestines and get shocked, see things like flying snakes outside my house it but feels like a dream like its not real and happens for a split second, it doesn't bother me though.
However might 'feel' it like if I imagined if something was on my shoulder I'd kinda feel uncofortable.
My thoughts get muddled up and are constant they feel like a different me. Same with my body moving sometimes.
My speech is random and might spout gibberish while knowing I'm spouting gibberish
My perception of reality might change like I might see everything like a gut/entrail like substance (like inside your body) and start laughing like I'm enjoying it.
Sometimes when I'm sick or tired my thought go haywire and my thinking goes to a point I cannot well explain in english what I think, its like these thoughts cannot be explained or understood when I am sane.
4chan really shouldn't be the place for you to ask this, but this seems like symptoms of schrizophrenia anon, you need medical care ASAP before things get worse.
>>8082197
I have been there but they called it excessive OCD, still thanks. I'll try a different doctor
>>8082197
DO NOT DO THIS. They give you pills that make you dumb and make your moth dry, and you have to tell your employers and such that you're a schizophrenic. It's much better just to keep it a secret.
Earlier I devised a deceptively simple-seeming maths problem. To my annoyance I can't solve it:
You want to cut a circular cake, diameter d, into x pieces of equal area.
The traditional way of doing this would be to cut normal slices every 360/x deg around the circle.
However you are an autist from 4chan and need each slice to have the exact same area - you also only have a ruler to hand.
Therefore devise an equation/ set of equations to cut the cake in parallel slices into slices of exactly equal area simply in terms of x and d.
Please note, this...
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numberphile answered this question
based numberphile
>>8082099
You have misunderstood the word "parallel" I fear
>>8082083
https://en.wikipedia.org/wiki/Circular_segment#Area
doesn't look pretty
Anyone doing graduate work in chemistry? im starting in the fall and want to know what im in for.
>>8082020
Pure suffering
>>8082047
ACS 99.999%
>>8082047
This.
If you're a masochist or a Sith Lord, I doubt you will like going into chemistry, unless you were a zealot about it..
But the mind of a chemistry zealot is not common, and I doubt you'd have one.
>/sci/ learns some new in lecture
>2 hours later
>/sci/ shitposts on /sci/ about how anyone how doesn't understand the thing they learned 2 hours ago is a brainlet
w2c that shirt?
>>8081990
>w2c
You can't it was a prop in a movie where she played a super advanced android from a parallel dimension.
>Tomorrowland
>>8081996
>Tomorrowland
>summarized perfectly by that pretentious shirt
how to increase iq
Become a jew
>>8081910
Leave 4chan.
>>8081910
Learn fool.
I really do love mathematics, but my passion is repeated integration, triple and quadruple integrals specifically. I really don't feel that they get the recognition they deserve, and that they really are powerful tools, even more abstract, higher level mathematics can be encapsulated with their power and beauty, but disconcertingly, most other mathematicians just haven't seen this yet. Hell, just consider how they so beautifully they encapsulate all of space. Furthermore, they give us infinite precision, which let's us have the power to encode arbitrary structures...
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>>8081816
>You could even encode and solve deep algebraic conjectures with these tools
As an undergrad I have to day this isn't making sense to me. Can you elaborate?
>>8081951
It's a fucking meme. He wants to get a PhD in triple integrals. Lurk moar
>>8081951
it's a /sci/ meme that more than three years old
I am considering becoming, as a career, a historian and writer on the subject of mathematics.
What is the mathematics equivalent to a "popular scientist"? I've seen "Math communicator" before.
What degrees should I look into pursuing?
>why not just do mathematics proper
i'm too stupidtu
>>8081803
Numberphile
>>8081808
OP here, I honestly don't like the YT channel Numberphile, not exactly sure why. Too many bells and whistles and not enough elucidation
math teacher
why the fuck is there even a square root sign if it has to be converted to a power of one half anyways?
>>8081603
To fuck with brainlets like (You)
because you touch yourself at night
...And the "power of one half" has, in some contexts, to be converted to the square root sign.
You're literally sperging out over the syntax of a function that could just as well be written as f(x) or sqrt(x)
>Book only gives answer to pair problems
>course uses no book
>just lecture slides
>hand-out of problem sets
>no solution to problem sets
>no syllabus
>no errata
>have literally no fucking clue what the fucker wants me to know
>Professor obscures everything to make his course seem harder
>Professor puts in question not covered by the course claiming "if you read the book you'd know"
>>8081604
nothing says "I can't think for myself" more than that last thing you said.
You don't deserve a degree if your only competence is to rewrite what's in a fucking book.
Is this book worth reading? It's on a list of books that I have to choose from and it looks like one of the few interesting ones. Is it mostly pop-sci stuff, or does it actually give good insights into the relevant topics?
No.
No. Please, post the list, OP.
No.
/sci/ is boring tonight, I thought I'd bring back some fun math problems that are very easy to understand that anyone can attempt.
Let [math]A \in M_n(\mathbb{R}) [/math] (a square matrix of size n with real coefficients)
Show that if
[math]AA^TA[/math] is symmetrical, then [math]A[/math] is symmetrical as well.
Another that I found, if you fancy arithmetics:
find [math]det(gcd(i,j))_{ 1 \leq i,j \leq n}[/math]
Note to people attempting them: don't get discouraged, they're not particularily easy.
>>8081455
How is gcd defined for real numbers?
>>8081466
Not for real numbers.
the entry of i-th row and the j-th column of the matrix is gcd(i,j).
