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Archived threads in /sci/ - Science & Math - 160. page

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When someone is shot why is it not a death sentence? Like if they get shot in the gut why doesn't shit leak into their wounds and how do they live long enough for it to heal?

Why do bandages and the like not heal into wounds? Like the mending flesh doesn't slowly meld with the bandages? Or do they and that's one of the reasons you change bandages so often?

If veins are so important and carry so much blood what happens if they heal? Like if you cut your femoral or whatever and it heals but stays severed is your leg basically running on fumes from the other small veins?

t. brainlet wanting to learn
8 posts and 1 images submitted.
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thanks
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What exactly are you asking for the first one? Sometimes bodily damage isn't enough to kill you, what could be simpler than that? A gut shot can totally leak shit into you, but that doesn't necessarily mean it would always be severe enough to kill you.

And bandages don't "heal into you" because they're not in you, they're just on the outside, protecting the wounded, vulnerable area from getting shit in it. Things which are totally inside you, like a bullet, will absolutely get healed around and stay inside you (which will definitely cause problems later). You change bandages because over time they themselves get dirty and this makes them fall off, or cause the wound to get dirty, defeating their purpose.

And veins generally re-attach themselves when they heal.
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>>9115286
For the first one, I mean it seems very strange to me that people can heal from gunshot wounds

It goes through you all the way right so you've got a gaping hole in your muscles or liver or what have you, seems weird that people can survive that sort of thing long enough for it to close up

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I heard you guys do shit like this for fun. no this is not my school assignment and you are not doing my homework.

a friend of mine made this riddle and i cant solve it, but he said im allowed to ask my friends and desu you are the closest thing to friends i have if you exclude him so, please take a look. even hints would be appreciated!

hes asking how many blocks for the last shape.
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I was thinking about base 7 to base 42 but some of them dont make sense.
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97
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>>9115043
how did you come to that conclusion?

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Tell me the truth about IQ, /sci/
If you have a reasonable source without questionable methods used, link it please.

(1) Do men or women have higher avg. IQ?
(2) Do women have higher verbal IQs?
(3) Why have I never truly met an intelligent woman (and I've met a lot of women). At university, outside of it, in games or social conventions.
(4) Does IQ have anything to do with the drive for knowledge? Because this too I believe is a masculine trait.
12 posts and 3 images submitted.
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>>9115020
I've also read about IQ tests being normalized to show no difference between the genders, such as the ravens, and then being used to show no IQ difference between the genders. What is up with that?
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Well /sci/?
>>
red pill me on why women are worthless sex objects /sci/

t. OP from /pol/

I'm starting uni in about a month, on a genetics and evolution course. I've been reading up in an attempt to be overprepared and not end up like pic related. So I was wondering if you guys had any recommendations for uni level books on genetics or engineering
6 posts and 1 images submitted.
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fuck off underage
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>>9114936
Or answer the question without sperging out
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>>9114854
>evolution course

You're wasting your life

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This is a maths problem that I found interesting and there it is probably a solved/well known problem because it is so genral and basic.

I want to know if a chord contains the same interval several times or only has unique intervals. Every combination of 2 notes has to be considered and none of the resulting distances should be equal to eachother.

But you probably don't care about the application so here it is mathematically:
Let A be a set of natural numbers {a1, a2, ..., an}.
T(A) is the multiset of all possible differences between numbers in A with the conditions that for each pair of ai and aj:
ai > aj and i != j
This just means that we only consider each pair once and not the negative differences too and we don't consider pairs of 2 times the same element.
Essentially if you plotted A on a number line and draw and connect all points with all other ones, T(A) is the set of distances of all these bidirectional lines.

Now T(A) might have duplicate elements (which is why I said multiset) or it might night!
for A={1, 3, 7} T(A) = {2, 6, 4}, no duplicates but for A={1, 3, 7, 9} T(A) = {2, 6, 8, 4, 6, 2}, has duplicates!

So yea this is pretty much the "problem" (I dont know the proper terminology). Do what you want with it, I want to know if there is any pattern to which sets A result in a T(A) with duplicates and which don't and if there is a pattern to it.


An obvious theorem:

The cardinatlity of the multiset T(A) is n*(n-1)/2 because out of the n2 tuples we can form from A n have the same element twice (now we're at n*(n-1)) and for each tuple there is a corresponding reversed tuple but we only consider one of them (n*(n-1)/2).
3 posts and 1 images submitted.
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>>9114845
Nah, you gotta restrict the problem parameters, or we can have an infinite amount of chords with intervals 1,n, for n 2 to ∞
What is the largest interval you want to take in consideration between the first and the last note? What's the largest interval possible between two notes?
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>>9114870
>What is the largest interval you want to take in consideration between the first and the last note? What's the largest interval possible between two notes?

This thread is less about figuring out something for the application but more about doing maths with it.
Yes there are an infinite amount of chords and it is also easy to find chords without duplicated(or more) intervals (for example going 1, 10, 100, 1000) but the idea was that maybe there is a rule to which sets have duplicates and which dont without having to go through and check each difference.

A variation (which might be more simple but also harder) could be to take all differences modulo 12 (because 12 half tones in an octave)

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If viruses aren't alive, then how can they be killed?
3 posts and 1 images submitted.
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Because medschools are full of people who graduated top of their class in the Navy Seals.
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>>9114746
>If viruses aren't alive, then how can they be killed?

Same way you can kill a smartphone...

You break them.

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Anyone here with schizophrenia? What is it like? I'm hitting my early 20s and afraid I'll start to develop it. So I want to prepare myself.
3 posts and 1 images submitted.
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>>9114713


If you are afraid of going insane chances are it wont happen. In most cases you feel ok, keep going and don't see anything wrong, you lose a great amount of circumspection.

So, if you are actually concerned, some, simple hallucinations may be the cause, I guess.

Just pop some AP's when things get bad. Shut yourself down partially for a while and then get off of them so you don't end up being a med zombie.
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Be prepared to half a dozen nasty side effects.

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Why hasn't CRISPR made werewolves real yet?
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>>9114708
Awoo!
Make Animes real!
https://www.youtube.com/watch?v=yBACqpTEzT8
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>>9114708
Awooooo!
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>>9114708
If you dont know the answer to this yoourself,

then your retarded,

fuck off , brainlet.

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Any of you cuckbois knowledgeable about discrete Fourier transforms?
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>>9114698
>discrete Fourier transforms
you're like a little baby
try Fourier transforms on the symmetric group brainlet
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>>9114801
Tell me about it faghead.
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>>9114698
Those with the PHENOTYPE use Fourier-Mukai transforms.

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Do /sci/ crack their knuckles?
Is it bad for your health?
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http://onlinelibrary.wiley.com/doi/10.1002/1529-0131(199805)41:5%3C949::AID-ART36%3E3.0.CO;2-3/abstract

>Dr. Unger exercised amazing self control by perform- ing 50 years of knuckle cracking (KC) on his left hand at least twice daily, “while those on the right cracked only rarely and spontaneously.’’ No evidence of arthritis in either and was found at the end of 50 years
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>>9114576
Wow that's cool.
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>>9114576
Absolutely /ourguy/

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What does this image have to do with science?
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>>9114547
INTER - prime number of words
STELLAR - prime number of words
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>>9114563
Oh wow. You're actually right...
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>>9114571
Yeah. There is a prime number of words and each word has a prime number of characters.

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I am a graphic designer studying Informatics in my seconds semester but I'm still not sure if I should try to combine my future work in IT with my art or completely separate them. I fear it's possible to be a full-time IT worker and do art as hobby but nearly impossible to be a full-time artist who codes as hobby. So out of curiosity some question to all CS/IT/Informatics students here:

• why did you pick it?
• do/did you like it?
• did you finish? (if 'yes', did you do it in one go?)
• did you know how to program before?
• do you practice artistic/creative hobbies not involving programming?
5 posts and 1 images submitted.
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>>9114545
You could analyze unemployment data if arts majors
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>>9114555
>if
* of.
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>>9114555
>>9114724
that's what i'm currently doing actually...

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Are we living in a simulation, /sci/? Is your "consciousness" just a simulation running on some autist's computer?
7 posts and 2 images submitted.
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>>9114526
Occam's razor says no
If we are, why does it matter?
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And what about all the fossils and older stuff?
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>>9114526
Are we living in a dream /sci/? Is your "consciousness" just something some autist dreamed up?

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Recommended reading for someone starting a mechanical engineering degree next year ?
20 posts and 2 images submitted.
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>>9114398
>wondows 10
>DVD drive

This kid is fucked for life
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>>9114398
is that pic real? lmao


Also. Dont fuck around, study your ass off. Join your schools robotic/engineering club and get involved. The kids that think college is a joke are the ones that fail out of calc 1.
Might seem trivial and obvious, if you force yourself to do every STEM related homework assignment, you should get all As
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>>9114623
guess im a brainlet and didnt read 'reading'

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Which general physics textbook should i buy? and why?
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get a basic high school physics and then learn calculus to do K&K & Purcell
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>>9114405
i already know calculus (at least differential and integral)
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>>9114407
lean vector and multivariable calculus you brainlet

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