>in highschool you learn 'mechanics' using basic algebra applied to newton's laws
>in freshman year you learn mechanics using differential newton's laws
>in sophomore/senior year you learn mechanics using the lagrangian, jacobians, etc
>in senior year/gradschool you learn mechanics using hamiltonians, poisson brackets, and canonical transforms
I understand laying a foundation, but why the fuck do you have to relearn the same thing 4 times to get a physics degree? Wouldn't it makes sense for people to just learn the requisite math first? Seriously I can't think of any pedagogical argument.
Especially highschool 'physics', how the fuck can you learn physics without differential equations (the lagrangian which is absolutely essential), let alone even basic calculus? There is no purpose in teaching diluted versions of these subjects besides to feel good and say you're TEACHING KIDS PHYSICZ and CREATING LE NEXT ALBERT EINSTEIN when there is no reason to teach someone a severely primitive version of physics.
wouldn't it make more sense to just do math the first 2 years of a physics BS (calc through pde and linear algebra), then do a semester of mechanics (crash course in basic (there is barely anything to learn) then lagrangian), then a semester of analytical mechanics, then EM and QM etc
what is the point of repeating the same material with more math added every time, besides to create easy physics courses for the bio majors that want to be doctors?
I mean if you really want to get into the variational principles so fundamental to contemporary theoretical mechanics you'd need a semester of real analysis, at least. Why not just have all physics students complete an undergraduate degree in mathematics before doing any physics? Why is calculus taught twice in the mathematics curricula, first with a focus on computation and later with an emphasis on rigorous argument, why not just teach it all in one go? Why is algebra first taught only with respect to manipulating the axioms of the field of real numbers, why not teach tenth grade algebra in full generality right off the bat?
>>8391469
the funny thing is I actually agree
no reason for math majors to learn 'calculus' first instead of analysis
It's just a waste of time
if you can't handle the material you should just get the fuck out instead of being padded for 2 years
>>8391479
why don't you just kill yourself if you are going to die anyways?
How can the human body be capable of squatting 200 kg? How could bodies have evolved to do this when it never happens irl?
Good question actually
Why not?
Why do we have the cognitive ability to drive a bike when that never happened before someone made a bike.
The evolution of capacities doesn't require it's edges to be requested.
>>8391322
You can use that build up muscle to squat 200kg or you can use it to kick a bear in the head to stun it, or you can run for two days to hunt down a deer with persistence hunting and then carry it back home all the way back.
You can use them in real life for actually useful things... or as a recent turn of events: just look ripped to attract partners. Modern trainings methods are designed to build up muscles in the shortest time possible, they aren't supposed to emulate real life applications of those muscles.
Could this have an effect upon humans, as the article suggests?
>>8391261
Forgot the article, sorry:
http://www.medicaldaily.com/dna-sperm-ex-partners-lingers-female-flies-and-influences-genetics-her-offspring-305934
>>8391261
Never say never, but what I know about biology from working as a cell biologist tells me this is extremely unlikely. The article said that the mechanism of this phenomenon is that molecules from the previous mating linger in the egg of the female. But in humans the eggs are way up in the ovaries, and very few sperm make it up the fallopian tube. Human sperm are programmed to die pretty quickly.
Contrast to a system like a fly where the sperm is deposited into a special organ called the spermatheca, and eggs are deposited into the spermatheca at regular intervals to be fertilized in sequence. Thus, in flies the sperm are evolved to be more long-lived.
Hopefully this answers your question.
Is he our guy, sci?
No physicists or voltaires allowed itt
>>8391002
> got cucked on calculus by Newton
You tell me
>>8391025
It clearly says no physicists allowed out, so please show yourself out.
>>8391002
No, Newton is our guy, he pretty much thought of all the stuff Leibniz was thinking even before he thought of it.
Physics n00b here.
I wonder something about double split experiment and observation.
In a nutshell , until particles observed by some sensory device , they are in super position.
And after they observed their wave function collapse and they are only one place at a time.
Thisis because after the observation , we have an information about particles position.
Here is the question , lets assume a shooted single photon to a double split. Until it reaches to the slit , lets say that photon leaves information about its position . But thing is , this information is so complex to get , it is out of the reach of our hands, it is imposible to get that information in that momment. Nevertheless , it leaves an information there.
I dont know even something like that could possible . Think of it as a thought experiment.
In a situation like this , does the photon shows wave behaviour or particle behaviour ?
>>8390748
>particles
double-slit is not about "particles",
it's about waves
>>8390748
Are you referring to a hidden variable theory?
How do you knows photons are in superposition if you can't measure them? Because all our measurements say that superposition is bullshit.
Poll time /sci/
What is the highest academic degree you hold? (not studying towards, but actually hold)
http://www.strawpoll.me/11361242
I feel like there's been an influx of undergraduate students lately.
>>8390668
GED
Not even lying.
>>8390676
In my understanding that's a high-school degree, so none for the purposes of this poll.
>>8390676
Hey, me too!
I'm a term away from my Associate's though.
Computer science is not a science
Computer science is more of a science than social science, at any rate.
>>8390645
I mean like computer science is more like math or logic but not science just wanted to make my point clear if i didn't
>>8390636
How many days have you spent at the lab doing research?
As a bioinformatician I can assure you computer science is science. We have experiments, predictions, the whole deal.
Most of the people that I've spoken to, including set theorists, have said that category theory is boring.
But what are some interesting aspects of category theory? Why would someone with no knowledge of category theory want to learn it?
>Why would someone with no knowledge of category theory want to learn it?
its applications to:
algebraic geometry
algebraic topology
abstract algebra
representation theory
>>8390594
It's a handy language to formulate and create analogies between a number of things in the fields described here >>8390632
The reason it seems boring is because it does not seem to talk about anything and it can't really be "applied" to anything. It really just is a different language, but sometimes just formulating things the right way can do wonders.
>>8390632
You forgot logic! Easily the most profound application of category theory IMO. Every type of category gives rise to a logic, and logics give rise to categories.
>professor doesn't provide practice exams
>He puts equation up but doesn't show how he obtained it.
I swear to god these lazy bastards should go baby sit their grand sons.
>>8390365
>professor's notations are different than the ones in the book required for the class
>comments on 4chan about how intellectual he is
Anyone know any video lectures for Elementary (or Introduction to) Number Theory?
All I can find is https://ocw.mit.edu/courses/mathematics/18-781-theory-of-numbers-spring-2012/ but that doesn't have video lectures.
I found this http://www.thegreatcourses.com/courses/introduction-to-number-theory.html but the pirated torrent is downloading really slow, around 30 kilobytes per second.
I checked YouTube and the closest thing I could really find to a decent lecture was the Mathematics for Computer Science MIT OCW series of Fall 2010. https://www.youtube.com/watch?v=L3LMbpZIKhQ&list=PLB7540DEDD482705B
Do you /sci/entists think that's sufficient enough?
>>8390277
A lot of elementary number theory is covered in any algebra class that covers rings.
If you can't find suitable lectures, I suggest you start trying to learn from reading books. Many topics won't have any good lectures.
>>8390297
Got any recommendations for a book?
Though to be honest the reason I would prefer a lecture over textbooks is that I'm not used to the mathematical notation used in higher mathematics.
rebump
Who's the smartest?
>>8390153
>>8390153
>two west asians and two east asians
are other races even trying?
me, but for some reason I'm not I. the picture
I don't care about speed of learning, just the quality of the outcome.
>>8389863
The Art of Electronics by Paul Horowitz, Winfield Hill
Learning the Art of Electronics: A Hands-On Lab Course by Thomas C. Hayes, Paul Horowitz
>>8389888
Thank you, anon. Anymore for anymore?
>>8389904
Practical Electronics for Inventors by Paul Scherz, Simon Monk
Electrical Engineering 101, Third Edition: Everything You Should Have Learned in School...but Probably Didn't by Darren Ashby
Make: Electronics: Learning Through Discovery by Charles Platt
would it be economical to turn decommissioned subs into orbital launch vehicles?
>>8389721
why not? wouldn't making a whole new rocket frame cost more than just dissecting a submarine? i mean it's already designed to handle a shitload of stress.
no because subs undergo cycle treatments which effectively renders the metal useless for anything other than subs. they're a complete waste
How do I even start doing this?
>>8389622
i have no idea
>>8389622
Wolfram alpha
Why did you snapshot an equation about an iterared integral
Is there any evidence for the benefits of psychedelic drugs that isn't pseudoscience? I don't mean to cure specific illnesses, that's been pretty well proven but I mean a reason everyone should do them.
Drugs will mess up your brain. Your parents should have told you this, faggot.
>everyone should do them
Of course not. Only people that could benefit from them should use them, just like any other treatment or medication. There is plenty of evidence that certain illicit substances are effective in treating certain illnesses and disorders.
>>8389100
But anon something something Joe Rogan something something PTSD something something altered states of consciousness something meme something Terrence McKenna