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Archived threads in /sci/ - Science & Math - 339. page


What type of engineering degree would be used to make a real life Iron-Man suit?
35 posts and 1 images submitted.
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memegineering
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Definitely not a one man job so probably a large variety of fields of expertise
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>>7911947
Or you could just create J.A.R.V.I.S and have him ups your shit. But CS is gay

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Why are rockets shaped like penises? Why not squares, rectangles or circles? Are penis shapes really more aerodynamically efficient?

Serious question.
23 posts and 4 images submitted.
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>>7911747
Nature has had 3.5 million years to find the best aerodynamical object for stabbing shit, so yea, it is the best shape
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>>7911747
>Are penis shapes really more aerodynamically efficient?

No, that's just a meme.
It was really all the fucking pig men at NASA that decided that that's the shape they will be going for. Because when you want to pierce the heavens then you got to have a giant dick, don't you.
They got that design from some NAZI scientists btw.! They wanted to tribute their neo pagan gods.
Fucking disgusting if you ask me
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>>7911747
I think it has to with surface to content ratio. If I make it a cube shape you have more metal to carry per fuel which makes it inefficient.

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Is there a recommended chemical to specifically destroy DNA?

Let's say I have an object I want to throw into the trash. But I touched said object and even ejaculated into it several times. I do not wish to leave genetic traces. With what chemical can I treat this object in order to make sure I cannot be identified anymore?

To prevent stupid questions: It's about my cum jug in which I collected my cum over months. I washed it out but I'm sure that's not enough.
26 posts and 5 images submitted.
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>>7911728
just use bleach
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>>7911728
chrome (VI) oxide and concentrated sulfuric acid. I bet this shit can destroy everything
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>>7911728
Burn it?

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>shit pay
>shit hours
>have your pride and dignity constantly shit on by low IQ plebs, niggers and retarded SJW red tape

And holy shit. Teaching STEM is worse because you'll be
>forced to teach math and science to retards because hurr durr "no child left behind" policy
>try to prevent an explosion in the chem lab by students who can't tell the difference between 5 and 50mg
23 posts and 1 images submitted.
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ahh fuck I know what you mean jeez

-kingibi
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I teach English to Japanese children and it's quite fun. No, I'm not a pedo.
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>>7911473
Is teaching liberal arts really that comfy than STEM?

My english teacher used to scream all the time

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Why do people consider physics to be such a great discipline when it's basically just pure math for people who cant do pure math? Is it because most of /sci/ is living this inadequacy and don't want to admit it to themselves?
17 posts and 3 images submitted.
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>>7911398
> le shitflinging between majors maymay
simply ebin OP :^)

Let us see how many retards get butthurt and post in this thread
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>>7911398
Why do you care? Just do your highschool homework, kid
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>>7911398
>physics ... it's basically just pure math
Lrn2physics, retard

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Has anyone here taken the Putnam? Supposedly the median score is zero.

Pic related.
34 posts and 1 images submitted.
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>>7911345
lol u dont need math irl bro
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>>7911357
you are the shittiest poster in the board. useless fuck
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>On A5 I'm literally visualizing riding the Dyck

Math is cancer

What year did we discover what the sun actually was?
20 posts and 2 images submitted.
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>>7911341
2009 when they released the new song about miasma that wasn't as good.
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>>7911341
>implying mainstream science knows what the sun is
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What is the sun?

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>Be me
>second semester doing physics 1
>teacher talks about thermodinamics
>Ask her at the end of the class: Which chemical element is fire composed from?

Her reaction will haunt me for the eternity
19 posts and 4 images submitted.
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>>7911138
...and her reaction was?
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Daughter
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>>7911138
nothing wrong with that question imo

What the hell am I looking at?

Why are these the videos I see before I actually find something remotely related to CERN? What kind of person floods the Internet with this stuff and who is promoting this trash?
18 posts and 3 images submitted.
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>>7911021
>Why are these the videos I see before I actually find something remotely related to CERN?
Because /popsci/ people are more interested in the idea and potential of CERN rather than their accomplishments.

>What kind of person floods the Internet with this stuff and who is promoting this trash?
People who recognize that former statement to be true and want to make money off of it.


Seriously OP, think for a second before you shitpost.
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>>7911050

Popsci people are more interested in loosely misinterpreting actual science rather than putting out conspiracy videos though. Making anti-science videos would be obviously counterproductive even to the popsci community.
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>>7911057
Don't logic splain me, I'm here to defend against the popsci jewish gay degenerate Reddit socjus autism zombies.

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can someone explain what is written on the board?
26 posts and 2 images submitted.
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>>7910793
her phone number
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proton decay stuff
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>>7910793
>left
Scattering and Renormalization in SU(n) GUTs

>right
Supergravity mixed with the SM

Links:
https://sci-hub.io/
http://libgen.io/
xD Reddit https://m.reddit.com/r/Scholar/comments/3bs1rm/meta_the_libgenscihub_thread_howtos_updates_and/

What do you do with these services?, How do use them?, How have they affected your work?, miscellaneous comments, etc.
27 posts and 4 images submitted.
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RIP lone wolf academia pirates Aaron Schwartz etc.
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Bump for SOCIAL JUSTICE !!!!!
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I love sci hub long live Marxism

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Do you?
24 posts and 3 images submitted.
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I know how ball looks like and I'd know of I stood on curved surface, but the Earth looks completely flat to me
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The world actually is flat, though
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>>7911493
Explain

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Did you know that Springer means "knight", the chess piece, in German?
33 posts and 2 images submitted.
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Why is Knight abbreviated N when it starts with a K?
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Except we in Germany call it "Pferd" and not "Springer".
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>>7910079
Because K for King I guess.

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What's the difference between vectors and quarternions?
20 posts and 2 images submitted.
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>>7910007
vectors are 3 dimensional, quaternions 3 but with 4 paramaters. Pretty simply actually if we represent a 3d vector as a rotation on x,y,z we get an euler orientation which basically sucks because you can get gimbal lock. Now make a 3d vector to point from a zero point to anywhere to describe an axis and use another variable for the amount to rotate around that axis.
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>>7910007
Pretty great video by Numberphile:
https://www.youtube.com/watch?v=3BR8tK-LuB0
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>>7910007
Vectors are a tuple of numbers, often used to represent position in an x/y/z kind of way; quaternions are an extension of complex numbers to represent rotations in three dimensions; they have four parameters and map to an axis/angle formulation of rotation. Two quaternion rotations can be combined simply by multiplying them together.

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We all known that practice creates skill.

But isn't skill what *allows* practice?

Most people aren't able to long routines of practice simply because they don't get any better and its frustrating.

Talented people get a lot of progress in training so that it becomes exciting.

I think this applies to everything, including studies.

Suggesting people to study hard despite lack of progress is kind of ruining their life.
39 posts and 3 images submitted.
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>>7909950
>Most people aren't able to long routines of practice simply because they don't get any better and its frustrating.

that isn't practice. practice involves self criticism and analysis of what went wrong and how to do it better. not just beating your face against something for some arbitrary amount of time.
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>>7909950
>bawwww, studying is hard and I can never get better so why even try
How about you actually try different methods of studying? Do you honestly believe that people can only improve at what they were naturally talented at in the first place? People get better at things by staying determined even when their limitations come into play. Suck it up and stop pitying yourself just because life is hard.
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>>7909950
it kind of goes both ways

practice definitely makes you better at a skill, but getting better gives you motivation to practice.

I play guitar and was terrible at it for a long time. I never wanted to practice because I couldn't translate the music in my head to the guitar and my phrasing was poor & choppy. I kept practicing and tried to learn new ways to express my ideas (learned new scales, rhythm, not rigidly following said scales, keys) while playing to a metronome and my playing improved a lot. Now I enjoy playing my guitar because I'm not limited.

if you're hitting a dead end in practicing something, you need to approach the problem differently and figure out what's giving you trouble.

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