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Archived threads in /sci/ - Science & Math - 2090. page

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Is Christmas gift-giving out of control?
If 18 family members each give each other 1 gift, that's 306 presents under one tree.
What is the optimal number of family members and gifts per member /sci/?
16 posts and 2 images submitted.
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>>7714548
1 gift per person except for kids 12 or under.
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>>7714548

>having a family
>making people happy

Get out
>>
group up, give larger but fewer presents

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>Listening to music while studying

How are you meant to hear yourself think
31 posts and 6 images submitted.
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>>7714306
it helps if you have ADHD
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>>7714319
I already have trouble concentrating, and music only makes it worse.
>>
>>7714306
>playing music with lyrics while studying
>Not being able to filter out the lyrics if it does have them and just have it as background noise

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>Eighty children get chickenpox at Brunswick North West Primary, a school that calls for 'tolerance' of vaccine dodgers
http://www.baka.com.au/victoria/eighty-children-get-chickenpox-at-brunswick-north-west-primary-a-school-that-calls-for-tolerance-of-vaccine-dodgers-20151209-gljzkx.html

Why are people so stupid, /sci/? Why can't everyone be intelligent like me?
41 posts and 7 images submitted.
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Weird. Why did my link change to 'baka'? It's supposed to say 's m h', which stands for Sydney Morning Herald.
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>>7714287
Wew Lad Tbh
>>
>>7714287
F A M

>implying vaccines for chicken pox are commonly administered to children

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If in the moment you were a little sperm you had a conscience, and a god (just supposing) said to you:

-Your life is gonna be hard and shitty, you almost won't have pleasure. You'll work hard and be humiliated by your family, and everyone else.

So, in that moment you have a choice: never exist or life this fate. Would you prefer to suffer your entire life just to be alive (think well, you're lucky if you're alive) or without pleasure and respect from the others, life just don't worth living?
16 posts and 1 images submitted.
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>>7714112
A nice post, but how is this related to /sci/?
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>>7714112
Who sais suffering is bad? You can find value in nearly anything even suffering.
Bloody hedonists.
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>>7714119
I don't think others boards are appropriate for this, and philosophy (I think it is) is also science. Just asking.

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Mfw when our prof said we can't use our calculators in the subject(eng'g statics)
33 posts and 5 images submitted.
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>>7713801
So? Most of the applications are analytical derivations from spatial DE models. There's no need for calculations.
>>
>The sum of forces at each point is 0.
>The sum of angular momenta at each point is 0.
>Solve the system of equations with Gauß.

Wow such difficult calculations...

I still don't get why there are semester long classes about about something that can be easily learned in a single day.
>>
>>7713803
To develop creative problem solving and logic skills. There's also situations that are indeterminate etc. which require more creative methods to solve.

So it helps you to develop modelling skills on physical problems with baby math so you don't suck at modelling more complex physical phenomena later. It's also why circuits have an entire first year module at some universities. And why ChemEs have mass and energy balances classes.

How many more jobs will be replaced by software in the near future? Was discussing the point of software and what it's capable of with my girlfriend and offhandedly mentioned that jobs like hers could be automated in the near future and she got all offended.

Thoughts?

-Drivers
-Remaining assembly line workers
-Pilots
30 posts and 2 images submitted.
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>>7713503
>-Drivers
>-Pilots

Liability lawyers say no.
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>>7713503
All I can say is that more cerebral jobs aren't necessarily safer. It's important to realize that very often the skills that require the least conscious thought rely on those human abilities that have been evolving the longest.
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>>7713503
Should I skip out on a math degree?
I want to get a BS in it but it seems like people wouldn't need it anymore these days because of it :^(

Also I read this article about IBM replacing radiologists from hospitals so that's one

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Can someone recommend me textbooks for a good intro to topology and modern algebra?

All I've taken is linear algebra and set theory
23 posts and 1 images submitted.
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>>7713166
Munkres
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>>7713203
>Munkres

Cool, how about algebra?
>>
>>7713203
Cool, what about modern algebra?

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I am a bit confused, since I passed my course in linear algebra few years from now.

If I can make a vector space over field R which has angles as elements, then angles are vectors.

So i know that angles can't be vector, but I see vector space (V, +, *), where set V contains some angles in Radian or whatever and I can see that these condition work.

1) (V,+) is a group
2) a*(u+v) = a*u + a*v
...
and so on by definition.
So what am I doing wrong?
28 posts and 3 images submitted.
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Let's also make that V goes [0,2pi) to make unique neutral.
>>
Yes. And?
>>
but they shouldn't be, right? intuitively

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Do you guys think someone who is "good" at writing fiction is as skilled and intelligent as someone who is good at high level math? To me it is laughable to even think is.
16 posts and 3 images submitted.
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>>7712703
you are insecure
you need validation from other insecure anonymous mouthbreathers
they will tell you what you want to hear
they will tell you what you don't want to hear to be contrarion
you already knew this
notsoinsecureafterall.gif
>>
>>7712703
To me it is laughable that you even thought to make this thread.
>>
>>7712703
There are different types of intelligence. Being able to weave a convincing and well loved story is harder than math.

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How fast is the earth moving relative to a stationary object?
74 posts and 9 images submitted.
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A stationary object where?
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>>7712647
Relative to the stationary objects on my desk, 0 km/s.
Relative to the sun, about 30 km/s.
The sun orbits the galaxy at about 200 km/s.
Relative to the invasion fleet from Tau Ceti, we're moving about 0.33c.
>>
>>7712659
what if you chose an arbitrary co-ordinate near your desk, how fast would earth move away from that point


this is probably a bad question

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The Earth is shaped like a giant doughnut. Prove me wrong. Protip: you can't.
27 posts and 2 images submitted.
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>>7712485
It's true, when I look straight up I see the other side of the world.
>>
>>7712485

That mapping makes no sense, all the continents are repeated on the inside of the ring.
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>>7712531
>He hasn't visited the inner ring

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http://gawker.com/study-more-useless-liberal-arts-majors-could-destroy-i-1746683311

Almost half (48.5%) of jihadis recruited in the Middle East and north Africa had a higher education of some sort, according to a 2007 analysis by Diego Gambetta that is cited in Immunising the Mind, a new paper published by the British Council; of these 44% had degrees in engineering. Among western-recruited jihadis that figure rose to 59%.

A study of terrorists in Tunisia – where an electrical engineer went on a murderous rampage in June – showed similar proportions. And a study of 18 British Muslims implicated in terrorist attacks found that eight had studied engineering or IT, and four more science, pharmacy and maths; only one had studied humanities.

Martin Rose of the British Council blames the “engineering mindset” for why scientists and engineers make for such good ISIS fodder—students with a technical background might tend to see the world as a fundamentally rational machine that can be repaired like any non-abstract mechanism and exists in an array of binary states, like “on or off” or, say, “Halal or Haram.” There’s typically a right answer or more efficient route in the sciences, as opposed to the deliberate uncertainty and endless perspectives of the humanities.

Rose suggests that the British Council, the organisation funded by the UK to spread British cultural influence around the world, should involve itself in education reform, to “humanise” the teaching of scientific and technical subjects. A broader-based education would give vulnerable students the intellectual tools to develop an open-minded, interrogatory outlook – and to question authority, whether scientific, political, religious or scientific.
36 posts and 8 images submitted.
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>>7712261
>STEM
Valued ISIS member
>H&SS
Suicide bomber
>Nice tits
Valued jihadist breeder
>ugly tits
Suicide bomber

/thread
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>>7712261
The ME doesn't have real STEM education. They publish articles on spiritualism and Allah controlling the motion in universe in their "physics" department's for fucks sake. Even the Nobel prize winning Afghan who reported this atrocious state studied at Western universities.

Anyone have the link to that news article so people know I'm not even making this up? Lemme look through my bookmarks quickly.
>>
>>7712261
>"on or off" ; "halal or haram."
kek

Maybe I'm retarded, but tend to think STEM individuals would realize how *irrational* the world is, after studying natural/physical sciences and maths. But hey, that's just me.

Talking out of my ass: the percentage is probably that high because I don't think the parts of the world like the Middle East and North Africa value much other than technical-skills or things applying to industry. Developing countries and places with less stable economic climates don't have much use for liberal-arts degrees. The only way a kid could go to college is to learn some sort of STEM field to apply to industry, I bet.


Also that last paragraph of your post gave me cancer.

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How close can 2 atoms get?

When I touch a wall I know I'm not really "touching" the wall since the wall is made of atoms like me so the electrons on the outside of the wall's atoms repel the electrons on the outside of my atoms.

So its more like I'm touching a force field around the wall correct? And there's one around me?

Do we know the size of this field? Under normal circumstances how close can 2 atoms be? What about when they react chemically or nuclearly?
31 posts and 1 images submitted.
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It depends upon how hard you push. The field strength varies as a function of distance. The strength of the field is equal in magnitude to the force you apply plug the value of that force into the equation for the strength of an electric field and solve for the radius. I recommend looking up the normal force and how it relates to particle physics
>>
>Under normal circumstances how close can 2 atoms be

take a cup of water, that'll give you an idea since water is nearly incompressible

if you touched something hard enough you're hand will just be cold welded to that thing
>>
Computational chemist here. We can apply methods that we know to be highly accurate around the equilibrium distance of the two atoms from comparison with experiment. Short of basis set issues (which are solvable), there is no reason to not trust those numbers. So yes, it can be calculated, and it turns out to be roughly exponential. The term we use is Pauli repulsion.

Most of the time, we don't really care about this part, though, it only needs to be repulsive and give a decent equilibrium distance. The other side of the potential is much more interesting.

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Imagine a future where instead of creating something like Zumwalt, we create an equal tier spaceship.
32 posts and 3 images submitted.
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>>7712090
...and proceed to bomb the everliving shit out of everyone with it
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>>7712090
and make it easily affordable
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>>7713659
kek'd

Why America keeps spending so much money on military is a mystery to me. It is barely useful.

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If I want to become a genetic engineer,do I need to go to medicine to get an MD or is biology ok?

I live in Europe
25 posts and 3 images submitted.
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bimp
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>>7710501
I don't know if biology is enough (it might require more than a degree), but at least in Spain there's a Biochemistry degree.
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>>7710529
I mean,I plan on doing a masters and a Phd after,but a friend of mine insists that I need medical school to get started on the path

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