I have decided for everyone to post their favorite elements on the periodic table. Mine is the golden boy itself:
>>7839312
fire
Mine are hydrogen and iron.
Anyone?
Hey /sci/entists,
Could I make props (propellers) out of Balsa wood for a drone?
Pic related, I'm going to make them for an Eachine H8.
sure
>>7839310
Thanks
I have a PDF with around 500 pages I have to learn and partly memorize. There are pages with just photos, some definitions, examples, etc. Is there a /sci/ aproved way to learn? Should I write all the things I have to memorize on cards (which costs time) or learn directly out of the PDF?
Also because I'm a lazyfag I only have a few days left to learn that shit.
>pic not related but how the pages kind of look like
>>7839215
If you have any exams from previous years do those
>>7839230
Definitely gonna do that, thanks
Group the cards into clusters, connect the clusters. Try to find dichtonomies, or barymetric relations. Thus it becomes easier to memorize
Is probability real?
probably
probability is real because every system has an input and output, and given choices and the variables which dictate the combination of states which that system can take, there is a distribution in which you can say what the "probability" of an event occurring is.
if i flip a coin ten times, how many combinations are there?
given how many combinations are there, what is the probability that each one will happen, and why?
each of those aspects are real. it's not just hand-waiving chaos or in-determinism, because that's not what it is trying to tackle. you can have a system where it's fully random, like a roulette table, and still deal with probability.
>>7839209
maybe
Why russia owns the competitive programming and hacking scene?
(Also the east european nations)
[pic related]
Because Russians are good at math/stem stuffs. Remember first nuclear plant? First person to space?
proofs?
Latex practice thread
[latex]\frac{1}{2}[\latex]
Latex practice thread
[math]\frac{1}{2}[\math]
[eqn] \iint_D f(x,y) \mathrm{d} x \mathrm{d} y [/eqn]
gaddamit
[math] \frac{1}{2} [math]
When does math stop being plug and chug?
when you start studying combinatorics
The moment you have to think about what formula to use, or possibly derive your own
>>7838995
>The moment you have to think about what formula to use
That's still plug and chug
How do you know the scientific method gives valid results?
Especially those of you who think philosophy is a poopoo field.
>>7838877
>it's another U CANNUT KNOW NUFFIN thread
>>7838887
>thinks "u can't know nuffin" is what philosophers think
>>7838877
>Science finds truths popsci meme
stop watching black science man
hey /sci/, what program would help me take enough physics/chemistry/math courses to do research on these techs while still using those credits accordingly for the degree itself instead of just squandering electives:
high temperature superconductors
Josephson junctions
multijunction photovoltaics
magnetic refrigeration
electroactive polymes
ultracapacitors
chemical vapor deposition
Selective laser sintering
machine learning
electron beam welding
Hall-effect thruster
Spherical Tokamaks
scramjets
nitroamines
rotaxanes
my current idea is materials science. thoughts? i guess an undergrad would never really touch on these areas, but i'd rather not be told "yeah you aren't gonna be able to do these until you have these 101 courses done".
>>7838807
Chemistry with a focus in physical chemistry. That alone will get you up to modern physics, linear algebra, and you'll take all the chem you need.
>>7838812
what about other math like functional analysis? would it pop up in research of a superconductor
>>7838822
Honestly I couldn't tell you, but I assume you wouldn't need functional analysis for superconductivity. I had only up to vector/multivariate calculus for my undergraduate major. Anytime a subject, like biochem physics, needed mathematics I hadn't taken yet or practiced, the applications were uniform enough that they were easily learned and understood in context.
hello /sci/
the longest word composed by 'a' and 'b' with no pattern repeated twice in a row has length 3, for instance "aba"
it is pretty clear it cant get any longer
what would be the maximum length with no pattern repeated three times in a row? is it even finite?
it can get pretty long, for instance
aabbaabbaabaabbaabbaabaabbaabbabaabbaabbaabaabbaabbaabaabbaabbabaabbaabbaab...
however, for instance, aabababb is not permitted, since 'ab' is repeated three times in a row
>>7838787
your example has the string "aabbaabbaab" repeat continuously.
what is the minimum number of characters required to be a pattern?
a more technical formulation of my question would be "is the quotient of the free group [math]F_2[/math] by [math]\forall x~x^3=e[/math] finite?"
>>7838797
look again at my example
also, the "..." do not imoly that the pattern is repeating, it means that i could go much further but it gets boring
any repeated sequence of characters is a pattern
I'm starting my PhD on machine learning starting next spring.
I'm worrying right now because my math is pretty much shit thanks to my shitty undergrad CS courses. (No rigour maths, the hardest is probably Discrete math, my school didn't even offer Analysis, only Cal 1 2 3. Yes, the school is shit, don't ask its name).
I can read empirical ML papers fine, even if the consists some basic Calculus level equations. But when it comes to difficult models/learning processes which requires a lot of math maturity, I'm fucked.
So I have to learn Analysis, Differential geometry right now, all by myself with a few books, before Spring or my Prof would know I'm a hack.
I read Rudin but it's kinda messy and I don't even know how to prove simple stuffs. I don't even know if I should memorize every single axioms. I'm afraid that I won't make it in time.
Can I learn both Analysis and Differential Geometry in 2 months? Which books should I choose?
There are just too many problems with me and I just don't know anymore. I wish I learned Analysis in undergrad school.
>>7838744
Linear Algebra (Dover Books on Mathematics) by Georgi E. Shilov
Elementary Real and Complex Analysis (Dover Books on Mathematics) by Georgi E. Shilov
Elementary Functional Analysis (Dover Books on Mathematics) by Georgi E. Shilov
Advanced Calculus of Several Variables (Dover Books on Mathematics) by C. H. Edwards Jr
Tensors, Differential Forms, and Variational Principles (Dover Books on Mathematics) by David Lovelock, Hanno Rund
>>7838744
I'll be honest with you: unless you are a genius, there's no way that, without mathematical training, you will understand in 2 months analysis and differential geometry without sounding like a dumbass when someone asks a question.
Not only becuause they're somewhat difficult subjects (not that much) but also because they build on other fields (algebra, topology).
So just try to find how to solve this problem without relying on learning this in 2 months.
And, by the way, for geometry read doCarmo. I liked it when I read it.
>>7838744
>I'm worrying right now because my math is pretty much shit thanks to my shitty undergrad CS courses. (No rigour maths, the hardest is probably Discrete math, my school didn't even offer Analysis, only Cal 1 2 3. Yes, the school is shit, don't ask its name).
Holy shit, which program give you an offer?.... I applied this year to several programs in the same area and they are very selective with the people they choose?
How can you tell if you or someone else you know might have an IQ in the range of 200+ without resorting to official testing?
Say, for example, you're someone who has scored the top grades across the board in your country's public exams with very little effort (less than two hours revision, five days a week, for three months prior to the exams themselves)? This might indicate a high level of intelligence, but what if you have a personal distaste for mathematics? Let's say it doesn't excite you and you never took it beyond high-school. Most people with incredibly high IQs seem to be strongly drawn to mathematics. Would you say this is always the case or is it just an example of board culture?
>>7838666
"Welcome to iQ testing, where everything's made up and the points don't matter."
>>7838715
what?
>>7838715
kek
>>7838666
There's almost no correlation between grades and IQ. One of the few things IQ predicts is social deficits at high IQ's, 150+ I believe is when it becomes strongly correlated. Math is a solitary, cerebral, logical pursuit. It makes sense that someone with a very high IQ might be drawn to study maths. Also 200+ is unheard of as far as I know. Don't get hung up on IQ. It's not a bad assessment of some basic intellectual capabilities, but beyond that it doesn't determine anything.
Well, /sci/?
>>7838630
1=/= sqrt 1
Dumbass
>>7838630
1=/= sqrt 1
Dumbass
>>7838630
1=/= sqrt 1
Dumbass
What does /sci/ think about electrical engineers?
>>7838582
Respectable degree, not a meme. Core job market is a bit oversaturated at the moment.
>>7838582
less intelligent version of computer engineers
>>7838582
bretty gud
Anyone else a complete retard when learning new things, even trivial things, for the first time? Once I have actually learned it and understood it, I can apply it to new problems easily. I also improve very quickly.
I can recall being stumped for 20 whole minutes by algebraic manipulation of number sequences when I was first learning it.
Am I retarded?
N-n-no bully
You are not alone anon.
>>7838526
Are you sure you're learning correctly? If you have difficulty with that shit, get a more explanatory textbook. Some textbooks expect you to understand straight away, but some go into more detail about exactly how, and why to do it.
Though, to be honest, with math some things just aren't understood straight away until you apply them again and again.
I can relate. First-time comprehension is absolute garbage. I can't follow a lecture.
But once I get home and do some experimenting and further reading I master it and never forget.
Do you happen to be clumsy, bad at competitive videogames and generally sub-par at tasks which require you to think "In the moment"?