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Archived threads in /sci/ - Science & Math - 586. page


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>football fields
>hiroshimas
>olympic pools
11 posts and 2 images submitted.
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>>7694425
Never thought it bothered someone other than me lol
>>
>>7694425
I don't even know how big an Olympic-sized swimming pool is. How can I relate?
>>
>>7694819

It's pretty big

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Hey guys, I need to know this:
How big the acceleration needs to be
to prevent that block to slip down.
Thanks.
22 posts and 2 images submitted.
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>>7694421
boooooooring
>>
Vyloucen ze souteze.
>>
Taky to ted resime :D Fakt jsem necekal ze tohle nekdo postne na 4chan
Fakt ses pica vole xD

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Which one /sci/?
14 posts and 2 images submitted.
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>>7694389
The one not in the picture on differential geometry obviously. Don't you know how autistic everyone here is?
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>>7694391
Differential geometry is much less autistic than algebra. At least diff geo has reasonable applications and is based on intuition.
>>
wikipedia, cuz algebra takes about an afternoon to learn

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>mfw a nigerian man is actually the father of super computing
So, What contributions have you made to mankind /sci/?
14 posts and 2 images submitted.
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I invented the first BitTorrent protocol.
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>Emeagwali studied for a Ph.D. degree from the University of Michigan from 1987 through 1991. His thesis was not accepted by a committee of internal and external examiners and thus he was not awarded the degree. Emeagwali filed a court challenge, stating that the decision was a violation of his civil rights and that the university had discriminated against him in several ways because of his race. The court challenge was dismissed, as was an appeal to the Michigan state Court of Appeals.

>Emeagwali received the 1989 Gordon Bell Prize for an application of the CM-2 massively-parallel computer. The application used computational fluid dynamics for oil-reservoir modelling. He won in the "price/performance" category, with a performance figure of about 400 Mflops/$1M. The winner in the "performance" category, Mobil Research and Thinking Machines, used the CM-2 for seismic data processing and achieved the higher ratio of 500 Mflops/$1M. The judges decided on one award per entry.[2][1] His method involved each microprocessor communicating with six neighbours

But yeah, "father of super computers," because he's a black guy with a job and some shitty no-name prize.
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>>7694175
A prince among men

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>earth
>atmosphere
>tube
>space
>vacuum

There's a vacuum in the tube. What happens when the red lock at the bottom is opened?
15 posts and 2 images submitted.
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>Buy a drink from mcdonalds or something
>Take the straw and cover the top of it with your finger
>Now slide it into your drink
>Congrats your straw is now a vacuum
>Now take your finger off the straw

There's your answer
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>>7694163
I don't think you know what a vacuum is.
>>
>>7694157
Depends, is the vacuum on or off?

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Hey, biology fags, halp me.

I swear this is not another religious bullshit, but what are the evidences that prove evolution is not only a genetic similarity between living beings?
Because I'm sure a lot of people who believe in evolution today think the scale of complexity and similarity between living beings is somewhat a prove for evolution, which is not exactly.
16 posts and 1 images submitted.
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>>7693870
Why is there a new flu vaccine every year?
/thread
>>
>>7693877
>why am I different from my grandfathers?
>obviously evolution
>>
>>7693870
universe grew from basic plasma to human consciousness

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What major would make me most qualified to solve a problem like this? I'm thinking Statistics master race.

>not so fast math majors
12 posts and 3 images submitted.
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You kidding me? Week one of a probability course is all you need to solve this
>>
>>7693858
Actually, probably comp-sci with a concentration in artificial intelligence. It won't give you a very deep understanding of probability theory but it will give you an excessive amount of experience with problem solving on large Bayesian networks and stochastic processes.
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>>7693876
So you think the equation is true?

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What are your reading habits /sci/?
What kind of things do you like to read besides science related stuff?
Do you read more than one book at once?
I'm c reading La Insoportable levedad del Ser (The Unbearable Lightness of Being), I always read in spanish when I'm out of my house mainly the time I spend at uni or when I'm waiting for the bus.
While I'm at home usually at nights I tend to read in english, atm I'm reading The myth of Sisyphus and other essays by Albert Camus
I'm currently learning french so I just read in french on weekends and I'm reading le petit prince antoine de saint exupéry
11 posts and 2 images submitted.
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Gaunt's Ghosts
>>
>reading
>reading books
Maybe once the semester ends
>>
The dog dies ;_;
I almost cried

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Hi goys,

Currently finishing up a semester of trig and I'm contemplating whether or not to begin the calculus sequence. I've just been taking math to see if there's anything interesting or exciting about it and for the most part its just been ok. Does it get better past trig or is there any point in taking calculus and beyond or is it all just a meme?

Kinda feel like stopping here desu senpai. The love is gone.
31 posts and 5 images submitted.
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You are either underaged or worthless.
>>
>>7693694
>is it all just a meme?

No anon math is the only thing in life that's not a meme.
>>
>>7693697
I was expecting to unlock secrets and discover interesting things about the universe and the nature of reality but for the most part its been pretty tedious and unfulfilling. Maybe a term off is in order.

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http://www.landoverbaptist.net/showthread.php?s=c415cc8e76f77a1f7756665c8723cf8a&t=45427

How are people like this real? How can they dismiss simple experiments and explanations? There are hundreds of pages of this shit.
21 posts and 5 images submitted.
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Does the Bible ever actually say the Earth is flat? Dante had no problem putting purgatory on the opposite side of the globe from Jerusalem.
>>
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>>7693641
Well it's actually quite fascinating. They're able to exist by application of a special property called Poe's Law.
We went over it in my psych 101 class, I don't remember all the details though...
>>
>>7693647
>[citation needed]
If it's satire, I find it hard to believe someone can argue for 100 pages all for a big joke.

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Guys you can now piss people off when they square a number say 0.5th-root lol
19 posts and 2 images submitted.
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>>7693379
underaged b&
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>>7693387
huh?
>>
>>7693392
http://www.4chan.org/rules

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>Imagine you are on a perfectly smooth speeding train, moving at a uniform speed (not accelerating or turning), in a car with no windows. You would have no way of knowing how fast you are going (or if you were moving at all). If you throw a ball straight up in the air, it will come straight back down whether the train is sitting still or going 1,000 mph. Since you and the ball are already moving at the same speed as the train, the only forces acting on the ball are your hand and gravity. So the ball behaves exactly as it would if you were standing on the ground and not moving.

>So what does this mean for our gun? If the gun shoots bullets at 1,000 mph, then the bullet will always move away from the gun at 1,000 mph. If you go to the front of a train that is moving at 1,000 mph and shoot the gun forward, the bullet will move away from you and the train at 1,000 mph, just as it would if the train were stopped. But, relative to the ground, the bullet will travel at 2,000 mph, the speed of the bullet plus the speed of the train. So if the bullet hits something on the ground, it will hit it going 2,000 mph.

>If you shoot the bullet off the back of the train, the bullet will still be moving away from you and the gun at 1,000 mph, but now the speed of the train will subtract from the speed of the bullet. Relative to the ground, the bullet will not be moving at all, and it will drop straight to the ground.

I get the bullet being shot forward = still going forward, but I don't get bullet shot backwards = stops and falls immediately to the ground. How the fuck does the train "steal" 1000 mph from a projectile being powered by a primer/combustion?
28 posts and 3 images submitted.
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>>7693238
If you get the moving forward, you get the moving backwards. Draw a force diagram and realize they're exactly the same.
>>
>>7693238

I know it sounds crazy but that's literally what happens.

Here's real life footage of a soccer ball, rather than a bullet.

https://www.youtube.com/watch?v=BLuI118nhzc
>>
underage fucking ban this kid

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Why are engineers so fucking retarded?
16 posts and 1 images submitted.
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>>7692975

this is actually true to some extent, except the no job part

five people asked me this week if I wanted to work with them, and it's only tuesday.
>>
Is astronomy and astrophysics a good thing to major in?
>>
>>7693152

Not if you want to find work.

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I'm surprised I haven't seen this here before;

http://youtu.be/7G4SqIboeig

A thourough and mathematically rigorous introduction to the general theory of relativity.

As a Mathematican, watching most lectures on physics by physicists is downright cringe-worthy, but these lectures are amazing.

Does anyone know of any more lectures that are this mathematically clear and well defined in their presentations?
34 posts and 1 images submitted.
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I am 7 minutes in and I am already having an autisgasm. This is physics as I intuitively conceive it.
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>>7692948
I've seen these before. Pretty damn good.
>>
>>7692948
>watching most lectures on physics by physicists is downright cringe-worthy

Never watch anything on quantum field theory.

"Well, this integral gives us an infinite result. But look, if I take the derivative and then integrate again, it gives the right answer! I guess the constant of integration must just be infinite. So just subtract infinity from everything and we're good."

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RISK-TAKERS ARE SMARTER, so sayeth researchers at the University of Turku, who used fMRI's and Diffusion Tensor Imaging (DTI) to analyse the brain structures of risk-takers and risk-avoiders, finding more white matter in the areas adjacent to the prefrontal cortex, the rear of the brain and the interhemispheric tracts of people who engaged in risky behaviour.

>White matter is the neural network of the brain. It transmits nerve impulses and regulates intra-brain communication.
>An fMRI measures blood oxygenation, which changes with neural activity in different regions of the brain.
>A DTI measured the between-group differences of the two groups: low vs high risk.

>Past studies have shown that people who deliberate more are smarter, whilst people who do not are dumber. The hypothesis of this study predicted the same, but the results were different. The explanation for the odd results goes as follows: more white-matter leads people to seek out more challenges in life, increasing their confidence.

http://www.sciencedaily.com/releases/2015/11/151130113545.htm

Hear that, you pathetic little beta male? Your lack of risk taking means you're stupid. Ahahahha.
13 posts and 1 images submitted.
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>>7692940

put all your money on black and then come back.
>>
>>7692940
>more white-matter leads people to seek out more challenges in life
what
>>
>>7692940

So wait, how do they determine they are smarter...?

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