[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]
Archived threads in /sci/ - Science & Math - 303. page
Images are sometimes not shown due to bandwidth/network issues. Refreshing the page usually helps.

File: proof.png (35 KB, 220x427) Image search: [iqdb] [SauceNao] [Google]
35 KB,
You are in a spaceship that has separate rockets pointed to fire vertically, and horizontally.

Suppose you fire your horizontal rocket using 1 unit of fuel, making your horizontal velocity equal to 1. After two seconds, you ship's position is (2, 0), and you have traveled a distance of 2.

Suppose you fire both your horizontal and vertical rockets, using .5 units of fuel for each, and thus 1 unit of fuel total, making your horizontal velocity equal to .5, and your vertical velocity equal to .5. After two seconds then, you ship's position is (1, 1), and...
>>
Because the two rockets are orthogonal.

There will be a component of force, for each rocket, in the direction you are traveling.

There will be a component of force parallel to this direction, and for each rocket these are equal and opposite.
>>
>>8065084
what
>>
File: Untitled.png (6 KB, 201x202) Image search: [iqdb] [SauceNao] [Google]
6 KB, 201x202
>>8065089
The rockets are working against each other.

File: gorilla.jpg (8 KB, 290x174) Image search: [iqdb] [SauceNao] [Google]
8 KB,
Why sometimes I feel like my phone is vibrating in my pocket when it clearly is not? There is a scientific name for this?
>>
>>8064849
schizofrenia
>>
>>8064849
autism
>>
>>8064849
monkey

File: aaa.png (313 KB, 492x398) Image search: [iqdb] [SauceNao] [Google]
313 KB,
young indy jones!!

what have you done today /sci/ but masturbate and fanboy it up on the imageboard?
>>
>>8064827
study for finals
>>
>>8064827
I built a base for a post.
>>
>>8064827
went to my physio appointment, got my dick sucked and went up a division in league.

this is pretty fucking cool tho, amazes me nobody else found it as I've been to northern Guatemala and seen the temples and stuff. It's a small place but tbf it is covered in dense jungle and sparsely populated.

File: 564.jpg (2 MB, 2000x2000) Image search: [iqdb] [SauceNao] [Google]
2 MB,
How would you explain quantum theory to an ancient without having access to scientific evidence?
>>
>>8064679
They would bash you with a rock, burn your house and rape your wife anyway
>>
easy now try to explain GR or SR
>>
>>8064679
It's easy: Either the cat is dead, or it isn't!

2 MB,
>Philosophy, religion, spiritual bullshit is more important than science because it explains why, rather than how something happens

>If you put all of your "Faith" in science rather than faith, philosophy, spiritual bullshit you are being ignorant and closed minded

How does it feel knowing this is what the average person believes?
>>
You should spend less time worrying about what other people think.
>>
>>8064575
>>8064575
>>8064575
>>8064575
stone told
>>
>>8064553
Thinking that science is better than religion and spirituality is literally a philosophical stance though.

File: Pondering.jpg (14 KB, 300x300) Image search: [iqdb] [SauceNao] [Google]
14 KB,
For example, there is no sound in space.
>>
>>8064548
Your mom is in love with my penis.
>>
You weigh more in Death Valley than you do at the top of Mount Everyest
>>
On the moon, a brick and a feather fall at the same speed.

File: 1462290130527.jpg (7 KB, 266x189) Image search: [iqdb] [SauceNao] [Google]
7 KB,
Jesus fucking Christ, I hate to say it, but the memes are true. In my baby-tier theory of computing class, two thirds of the class got caught cheating on an assignment, and it wasn't even anything hard. Why are computer science majors so damn stupid?
>>
>>8064530
>>8064530
>cheating

Bro, you are at shitty uni. Blame yourself for being there, not people treating education so lightly you could have outran them long time ago.
>>
Blame the university for allowing such people to study there. But then again the university needs them for the money. So blame the education policies of your country.
>>
>>8064530
shit school maybe? is your junior college full of losers who want highschool+ and fuck around all day?

File: OccsX.jpg (197 KB, 512x921) Image search: [iqdb] [SauceNao] [Google]
197 KB,
Why do people refer to engineering majors as walking jokes and suckers, when we're always the smartest people in society? Pic very much related.
>>
the more you train your brain to do science the further behind you get at talking to girls
>>
>>8064420
that picture does not prove your point at all though, it shows the top 4 caps at MD, professor, legal, and natural sciences. engineering is significantly lower

engineers really just apply the things that scientists discover, not really a respectable field imo but if thats what you enjoy then w/e
>>
>>8064431
>engineers really just apply the things that scientists discover
Which requires a higher IQ than discovering them.

63 KB,
how do you deal with mediocrity /sci/?
I am utterly failing electrodynamics while all my classmates are doing just fine
>>
>>8064374

You have two options:

>Drop out and pick a course you actually like before its too late
>kys
>>
I simply accepted that I will never be good enough
>>
don't give up

Remember that the talmudic bongo player had a low IQ.

16 KB,
How can I kill all of my gut flora without prescription antibiotics? Would a dilute bleach enema (like 15 or 20 parts water: 1 part household bleach) do it?
>>
Care to explain why you'd want to do that OP?
>>
You have 100 trillion bacteria in the initial 6-inch portion of your small intestine alone. You're not going to kill them all, sorry.
>>
>>8064382
kek, seconded

File: space-wallpaper-29.jpg (1 MB, 2880x1800) Image search: [iqdb] [SauceNao] [Google]
1 MB,
what science says or implies. You can scan the skies, send probes and expeditions, searching, analysing and exploring all you want. 10 years. 100 years. 1000 years will go by. Great fortunes will be made and lost. At the end of it all, It doesn't matter.

Earth is the only place where the force of life can exist in this otherwise vast and lifeless universe.
>>
Ok
>>
>>8064359
K... keep us posted
>>
>>8064359
>tried so haaaaaaaard

File: rollthedice.jpg (51 KB, 680x680) Image search: [iqdb] [SauceNao] [Google]
51 KB,

I've got a friend who is willing to try his luck on some exams, one of which is 40 questions with 4 answers and only 1 right (.25 of getting it right and .75 of getting it wrong)
What are the odds of him getting it right ?

The only answer I had was someone who calculated the event of getting specifically 20/40
>>
>>8064224
0.25^x where x is the number of answers he gets right by choosing completely randomly.
>>
>>8064255
No.

My question is about the sum of every event after 20/40, 20 included.
so 21,22,23,... until 40.

You didn't answer it. Just got me the possibility of answering 20 right, the events are supposed to happen at the same time,

Once you get me that with the explanation of which rule you followed, /thread it m8

.25^20 is only the possibility of doing 20/40
>>
>>8064224
>What are the odds of him getting it right ?
you mean at least 20/40?

21/40.

File: 20160509_064431.jpg (449 KB, 1600x1200) Image search: [iqdb] [SauceNao] [Google]
449 KB,
If you had proof that a god-like being existed and that an afterlife of paradise was guaranteed to everyone regardless of anything they could do, what would you do?

>in other words, i'd like to publish the proof in a philosophy journal, please e-mail me your help. Provingtheism@yahoo.com
>>
Thanks for your help, /sci/ /s
>>
Everyone knows there is a heaven
>>
post it on r/atheism, r/fedoras or wherever all the Dawkins believers live and enjoy the salt.

File: 1442116605372.jpg (82 KB, 555x703) Image search: [iqdb] [SauceNao] [Google]
82 KB,
Will science invent immortality in our lifetimes?
>>
Its possible but unlikely.
>>
Immortality is impossible because something will eventually get you.

We will have the ability to live for a very long period of time, though. (thousands of years, etc.)
>>
>>8064178
>We will have the ability to live for a very long period of time, though. (thousands of years, etc.)

How long do you think it will take? Also, do you think we will be able to revert old age? I don't want to live thousands of years as a grandpa.

File: CRISPR.jpg (179 KB, 869x994) Image search: [iqdb] [SauceNao] [Google]
179 KB,
Two questions for the genetic engineers -
What is the most unethical thing you can do with CRISPR Cas9?
Is this tech as powerful as the "science" media is claiming it is?
>>
heres food for thought

its hard to do unethical things
they take a lot of money
they take a lot of time
they take a lot of dedication

So unless there is huge monetary/military/power incentive behind a goal, it aint gonna happen
>>
>>8064039
My question is purely theoretical. I'm just curious what this tech is capable of.
>>
>>8064026
it is powerful, technically (and extremely simplified) you can edit genes, create diseases, destroy them

File: file0001176798396-770x405.jpg (68 KB, 770x405) Image search: [iqdb] [SauceNao] [Google]
68 KB,
if the evolution is real, how come horses didn't evolve above needing horseshoes in the last 50 million years?
>>
>>8064017

Because you don't understand what evolution is.
>>
No one knows. It's a mystery why horses never adapted to cobblestones 50 million years ago. You won't hear biologists taking about it though because the cobblestone industry pays them off, because they don't want people to know cobblestones occur naturally.
>>
>>8064017
Have thy been forced to walk on paved roads for 50 million years? Are horses 50 million years old?

File: Total-Solar-Eclipse.jpg (24 KB, 620x349) Image search: [iqdb] [SauceNao] [Google]
24 KB,
If the moon is drifting away from Earth at a rate of about an inch a year, at what point will a total solar eclipse just not be possible anymore?
>>
now
>>
>>8063967
That is incorrect.
>>
>>8064005
I don't think the moon is eclipsing currently

File: roflgtfo.jpg (64 KB, 600x399) Image search: [iqdb] [SauceNao] [Google]
64 KB,
I mean in a lot of his appearances on TV he or his mom come up with a lot of meme-cringe type of stories... is he the ultimate autist?
>>
He is a fag like you op
>>
Why'd you use window instead of board?
>>
He seems smart but everyone should stop putting so much pressure on him and let him think for himself. If I was that age and had so many people talking about me, I would have tried to run away a long time ago. Futurama, monkey episode, Mars university, etc.

File: 1461537802414.png (103 KB, 313x315) Image search: [iqdb] [SauceNao] [Google]
103 KB,
Any autodictats here? What have you taught yourself?
>>
File: 1462198009190.jpg (418 KB, 800x1000) Image search: [iqdb] [SauceNao] [Google]
418 KB, 800x1000
i'm being stalked by the ghost of Georg Cantor
>>
>>8063852
C++,Objective-C, Java, Python... I think coding is the best thing you can learn on your own.
>>
>>8063856
I'm trying to learn math, but I'm struggling. I think I might be retarded.

File: NORMAL LAW.png (22 KB, 588x393) Image search: [iqdb] [SauceNao] [Google]
22 KB,
Why do many phenomenon follow the Normal law distribution in nature ?

I would intuitively expect the distribution in red to be more prevalent.

How do you explain the green phenomenon ?
>>
Central limit theorem
>>
>>8063834

Not intuitive.

I'm asking about an explanation as to why it goes against intuition and you answer a meme ?
>>
>>8063864
Because the world doesn't have harsh cutoffs like in red. Normal has the rapid decline to infinity which makes it more "realistic"

File: niggga.jpg (10 KB, 190x265) Image search: [iqdb] [SauceNao] [Google]
10 KB,
I think I've found one of the worlds most needed medication but how do I make the most money out of this? It's completely unheard of.
>>
>>8063710
sell it to the jews
>>
File: realnigga.jpg (6 KB, 300x168) Image search: [iqdb] [SauceNao] [Google]
6 KB, 300x168
>>8063715
>Implying jews won't exploit my ideas
>Jews will sell it to the chinks without my knowledge
>Chinks will mass produce shit quality
Tell me how to sell my shit and create a monopoly.
>>
File: nevertrustajew.jpg (23 KB, 600x385) Image search: [iqdb] [SauceNao] [Google]
23 KB, 600x385
>>8063710

File: ombla.jpg (12 KB, 226x295) Image search: [iqdb] [SauceNao] [Google]
12 KB,
what the fuck, /sci/? are asians the only people doing shit in HS in USA? I'm from Europe and I was at some chemistry olympiads in my time and today someone posted this in a "study" group:
WHAT THE FUCK
you can barely spot a non-asian name in that list. I'm not racist or anything, but I just can't understand how this is possible in a country where asians are a minority. Yes, I expected to find many asians names, but not 90%+
what...
>>
File: jackie chan ror.jpg (32 KB, 387x512) Image search: [iqdb] [SauceNao] [Google]
32 KB, 387x512
>>8063695
Whites are to Asians as Niggers are to Whites, brainlet.
>>
It's in the asians' culture to actually put a modicum of effort in things.
>>
Highschool is wise

File: image.jpg (10 KB, 276x183) Image search: [iqdb] [SauceNao] [Google]
10 KB,
Harvard Math 55 has a reputation for being extremely difficult, but I'd wager Math in Moscow's study semester program makes Math 55 a joke.

http://www.mccme.ru/mathinmoscow/
http://www.mccme.ru/mathinmoscow/index.php?page=10
>>
>>8063683
>Harvard Math 55
>Through 2006,[6] the instructor had broad latitude in choosing the content of the course, and the course bore the title "Honors Advanced Calculus and Linear Algebra". For example, in 1970 by the second semester, students were learning about the differential geometry of Banach manifolds.[4] In 1994, students of Math 25 learned differential geometry using Manfredo do Carmo's book[7] and calculus of variations using C.H. Edwards'...
>>
>>8063703
Did you check the link in OP? They consider a course in Topology II: Introduction to Homology and Cohomology Theory an intermediate course.
>>
>>8063703
>For example, in 1970 by the second semester, students were learning about the differential geometry of Banach manifolds.[4] In 1994, students of Math 25 learned differential geometry using Manfredo do Carmo's book[7] and calculus of variations using C.H. Edwards' book.
so, just like every student in france?

I laugh every time someone tries to brag about their american programs

File: sketch.jpg (38 KB, 861x319) Image search: [iqdb] [SauceNao] [Google]
38 KB,
Hi /sci/.

I'm sketching ideas for some video game mechanics but my math writing skills are very weak.

I'm curious if you can understand what I failed to calculate and hope you could help me find the appropriate formula for a field, which increases the time intervals (therefore slowmo) near the center (enemy).

the size of the field is connected to the mass of the enemy, so the bigger the enemy, the further away the transition to slowmo begins.

maybe the mass and size could even be seperated so small and dense objects (enemies) will have a...
>>
>>8063573
OP, what exactly is supposed to be the mechanic here? the closer you get the slower time flows? A field where time flows uniformly but slower than outside?
>>
>>8063847
>the closer you get the slower time flows

also outside the fields can be considered a constant timeflow zone
>>
>>8063894
linear, polynomial, exponential or logarithmic decrease?

File: 1462465576834.png (607 KB, 900x900) Image search: [iqdb] [SauceNao] [Google]
607 KB,
Not talking special snowflake SJW shit here.
How would a hypothetical biological third sex work?
One idea I have is that it would act as a filter, that the male has to interact with before the seed is fertile for the female
>>
reproduction would then be via Borda count.
>>
>>8063557

Why couldn't it be independent and reproduce with itself
>>
>>8063557
Fuck off tumblr, your incoherent drivel annoys us.

Would running an electric current through gasoline cause it to ignite? How about shocking it (like it's a puddle on a gold floor)
>>
why not just try it? I'm sure a big enough arc will do 'er though
>>
>>8063592
How would I make an electric current? Also I don't own any gasoline
>>
>>8063594
Get two batteries, an electric wire, an electric tape, and a cigarette lighter.

1) Tape one batterys (+) side to the cables one end and put it on the floor
2) pull the wire like a straight line and tape the other end to far away
3) Remove the lighter top or break it to pour out the lighter fluid in a small jar
4) Put the center of the wire in the gasoline jar
5) Contact the other batterys ( - ) side to the free end of the cable

File: redmeat[1].jpg (118 KB, 618x348) Image search: [iqdb] [SauceNao] [Google]
118 KB,
Does meat make you sick?
>>
If I eat it raw, undercooked, over seasoned, old or rotten, etc., yes, but other than that, no. If I eat perfectly fine meat too much, forcing myself to eat, I suppose I too would become sick then.
>>
>>8063469

I'm sure meat has an LD50 value like everything fucking else does. No idea what it is though.

A lifelong surfeit of proteins (meatbased or not) can give you gout. Don't ask how I know.
>>
>>8063469
The symptoms include diarrhea, headache, fatigue, low blood pressure and heart rate, and a vague discomfort and unstoppable hunger even after eating large amounts of meat. If fat or carbohydrates are given in time, the symptoms will resolve themselves over 2-3 days.

http://www.ketogenic-diet-resource.com/rabbit-starvation.html

File: PDE_book.jpg (18 KB, 332x499) Image search: [iqdb] [SauceNao] [Google]
18 KB,
What books would you recommend for self teaching PDEs and real/complex analysis? In a couple days I will graduate with a BS in mathematics and have taken (among other classes) an elementary class on ODEs, a class on dynamical systems/chaos, and a class on non-linear ODEs (called intermediate differential equations). I wanted to take a class on Fourier Series and PDEs, but my schedule always conflicted with it (it was taught by one guy in one class every other semester). I would also like some insight into good books on real analysis (and later on complex analysis). My background...
>>
>>8063128
Read Baby Rudin -> Munkres' Analysis on Manifolds -> Stein's 4 Princeton Lectures in Analysis (Fourier Analysis; Complex Analysis; Real Analysis: Measure Theory, Integration, and Hilbert Spaces; and Functional Analysis)
>>
>>8063140
Will do. I have heard that Rudin's lower level book may be a good place to start. How about for PDEs? Or should I focus exclusively on analysis first? I really appreciate the advice, man.
>>
>>8063128
OP I want to get into applied math at cal poly. how do I hone my skillz outside of self-study?

File: image.jpg (260 KB, 1000x1000) Image search: [iqdb] [SauceNao] [Google]
260 KB,
What are the best ways to become biologically immortal?
>>
>>8063045
By killing yourself
>>
>>8063068
rude.
>>
Be a tree.

File: black hole.jpg (217 KB, 1340x682) Image search: [iqdb] [SauceNao] [Google]
217 KB,
How do we know that they have no size?

I mean if an object has a diameter of 0, it has disappeared into nothingness. How could something that has become nothing still have mass?
>>
>>8063019
>How do we know that they have no size?

Who said that they have no size?

When physicists/mathematicians see that their model predicts something such as an infinite energy density they
>well, this model is obviously incomplete, or potentially just wrong
but if said model seems to work for most circumstances, they will continue to use it for what it works for, and work on how to reconcile their abnormal results.

And then pop-sci mags...
>>
>>8063033
So what do physicists actually think about them then?
Could they have sizes that get infinitely close to zero (but never reach?) Or maybe a singularity's size is determined by its mass, wherein the more mass it has, the smaller it is?
>>
>>8063062
don't listen to him he's a massive retard who doesn't understand how mathematical and physical singularities fork off with respect to general relativity.

[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]
[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]