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Archived threads in /sci/ - Science & Math - 1663. page

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File: original-public-ivy-homepage.png (32KB, 686x755px) Image search: [Google]
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I know in America the Ivy League schools are the best of the best, (not including Stanford or MIT), but I recently heard of "Public Ivies"

What are they? Are they almost as good as the regular ivies? Easier to get into? Should I feel accomplished if I get into one?
170 posts and 12 images submitted.
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>>8079759
You shouldn't feel accomplished for getting into a university.

Feel accomplished when you have a fucking degree you underage millenial scumfuck.
>>
Much, much easier to get into for undergrad.

Can be just as hard or harder to get into for grad school, depending on the school and the field.

They're good schools. You will get a good education.

Stop caring about prestige, because prestige basically goes "oh wow", "that's a good school", and "never heard of it" with the vast majority of people.
>>
University of Virginia, UNC Chapel Hill, University of Michigan, and UC Berkeley are the only good schools that aren't an Ivy or Stanford/MIT/Caltech

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Answer me this:

Why do mosquitoes exist?

>they are annoying
>they are everywhere
>they leave behind itchy bumps
>they carry diseases

they serve no purpose other than to reproduce and die and annoy other forms of life

why do they exist?
82 posts and 9 images submitted.
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here's a better question, would there be any formidable repercussions if we found a way to drive them to extinction?
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>>8090872
The question doesn't make sense. Are you implying that animals exist to serve some purpose? Like your car?
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>>8090872
>Answer me this:
>Why do humans exist?
>>they are annoying
>>they are everywhere
>>they leave behind tons of trash
>>they carry diseases
>they serve no purpose other than to reproduce and die and annoy other forms of life
>why do they exist?

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Last thread over the bump limit.

How does the last step follow from the one before?
323 posts and 34 images submitted.
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>>8089022
I mean the [math]2\theta = \frac{\theta}{|\theta|}[/'math] where's that from
>>
>>8089024
Additional question: is there a firefox addon that lets me visualise the maths thing before submitting? I know about online renderers, but I'd rather use something more convenient that doesn't ask me to switch tabs

[math]2\theta = \frac{\theta}{|\theta|}[/math]
>>
>>8089022
>How does the last step follow from the one before?

What's the definition of sign(x)? What are the values of x/|x|?

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How good is the scientific understanding of nutrition?

Does there exist a definitive guide to what one should eat? Maybe even some food plans that make sure you get all the nutrients?

It seems like everyone has a different opinion. Some say eat this. Others say avoid this. Some say it worked for them. Some cite scientific research. Others say that research is not credible. With some it's not sure if they just want to sell you stuff. It's a cycle.

Do we really know so little of nutrition? Or does it differ greatly from person to person?
74 posts and 7 images submitted.
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I've never met a nutrition major that wasn't some chakra poking brainlet.
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>>8087267
Wake me up daddy
> dude wweed lmao (pic related xdd)
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>>8087267
>Do we really know so little of nutrition?
Yes
>Or does it differ greatly from person to person?
Yes

Nutritional science is hard. The miscibility of foods is poorly understood.
The field is also full of industry shills publishing data in shit tier journals that are favorable to their specific industry

The calorie counts of foods are all wrong and the gylcemic index is bullshit

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Post and discuss interesting graphs.

>set of complex numbers whose infinite tetration converges
109 posts and 29 images submitted.
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>set of all roots of polynomials of degree ≤ 24 with coefficients of -1 or 1
math.ucr.edu/home/baez/roots/
>>
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>set of complex numbers with negative real part whose infinitely repeated factorial diverges
www.mathistopheles.co.uk/2015/05/14/fractal-factorials/

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analytical chemistry > organic chemistry > inorganic chemistry > physical chemistry
55 posts and 10 images submitted.
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>>8088358

t. test tube washer
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>>8088373
>2016
>not having an ultrasonic washer
>>
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Hahahaha no. Analytical chemistry barely produces any good research. Oh wow we detected incredibly small amounts of heavy metals in fish, it's so small it's nothing to worry about, but we did it. Literally an Anal. Chem paper. Most Anal. Chem research is just done to keep the field alive and train grads, it's just like why people still analyze shakespeare's work even though they've done so for like 200 years.

You'll never make cool molecules like pic related.

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Erik Demaine
>son of MIT professor
>child prodigy
>father home schooled him in math, science, and art from a young age.
>bachlors age 14
>phd age 20
>MIT professor age 20
>currently age 35
>43 page CV

why do we even try
142 posts and 8 images submitted.
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>>8087389

>>son of MIT professor

cheating

>>8087389
>>currently age 35

and achieved absolutely nothing

/thread
>>
He's a good lecturer. I recommend his intro algorithms course that's online. He co-teaches.
>>
The guy who runs Tarsnap (cpercival) has the same CV, started Bachelors at age 13 http://www.sfu.ca/archive-sfunews/sfnews/2001/June14/percival.html

Don Knuth has a similar CV, so does Daniel Bernstein

These people aren't super geniuses they are just motivated. If they were geniuses they'd have solved some of the math millennial problems or found new breakthroughs instead of just being professors (exception to Dan Bernstein, legit genius).

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Why is technology not yet at the point of getting corpses off Everest? I thought Sikorsky invented a high altitude helicopter?

Pic related, the poor dead bastard's used a landmarker for heaven's sake.
56 posts and 7 images submitted.
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It's a money thing. Not a lot of money in recovering Everest corpses.
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>>8090839
They serve as valuable reminders that climbing Mt. Everest is stupid.
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>>8090871
>people who do things that i do not are stupid
can't you at least try to not be retarded

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James Watson selling Nobel prize 'because no-one wants to admit I exist'

fucking kill me
http://www.telegraph.co.uk/news/science/11261872/James-Watson-selling-Nobel-prize-because-no-one-wants-to-admit-I-exist.html
159 posts and 20 images submitted.
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Hahaha.. /pol/.

Not even once.
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>>8089139
good thing watson can find ways to afford fine art in his time of need, i was worried he'd let his position get to his head.
>>
>>8089139
Hahahahaha! When will it end?

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Why ain't we all running for cure against getting old and die?! We kill ourselves everyday by not watching for it, several times a day, by hitting our bodies in corners, by being exposed to sun, dust, microbia, all the unrest there is. Even tight socks may be harmful. Even keeping the urine when it wants out. So we need to eliminate those factors. Our body rebuilds itself, yes, but the fact that we die in about 100 years tells us that it doesn't support our way of life good enough. It can replace gone cells only by splitting other cells, but there's Hayflick limit - human cell normally splits only 52 times (telomeres are ends of our chromosomes, when biomachinery connects to them to make a copy of what goes down the line, the new chromosome is that very piece shorter. if we don't need them to split, may be that would be all we have to do to get biological immortality is to not kill our cells and to support the rest.
To achieve biological immortality we should bring ourselves in a perfect state. We was staying alive when we were way more fragile in the embryonic conditions. So let's start right there. Some japanese made rubber womb of men-size and people who was in it told they had incredible pleasure and security. Another(?) japanese researcher succeeded in keeping a goat embryo in artificial embrionic conditions untill it was born into this filthy world (that's 2months I guess) It's 2010's. In 1980's they could only keep them prenatal animals alive for a week which was not enough.
52 posts and 13 images submitted.
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So it's many layers of this decission:
first we put ourselves in spheric baths (ph should be regulated, temperature should be regulated, air and water supply should be regulated:
we regulate ph by piss and pure water (if somehow there would be not enough of salt or other components - we should add those too) and constant control of salt in the water.
then we attempt to grow ourselves placentas (cloning ourself a clone instead of children and making the clone's placenta split on early stages would require machine to replace the missing flow. so it's better to print it as they print ears today. of our cells colony, just put stem-cells in the form of placenta & give them the field (or enzymes) that would make them specialize into placenta. then we have to sew the placenta in the umbilic tubes if they are still present inside our bellies (or we make them anew) and then we have a machine that oozes blood of propper quality, machines are to be behind all that to construct and control the blood flow to placenta and placenta also gives some blood back in the split between placenta and the "womb" - it all looks pretty much like matrix movie, which might end in 33 seconds when neo wakes up and sees his friends tripping in this studio. Then hollywood comes and change in music announces it. It's more like combination of matrix and surrogates, we're not out of this world if we don't want to. only this time we send machines to work instead of us. and most of the time we're not even gonna be there, we just tune into them if we have to give them a task or if they call us because they're having a problem. our autonomous houses would be multilevel shells protected from anything possible (or should I say known to man to that moment) so our biological immortality would be approaching the absolute one.
>>
Or maybe those kids working with telomerase would succeed but they might need to remove ribs and skull to let the flesh grow the way it likes. And they would still need those bathes because mere statistics shows hell is round the corner, so even if we die at least don't let us rot, it might be painful.
>>
>>8088398
>retard who never read a textbook/paper after highschool

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Why you can't divide by zero? I you for example divide 10 by nothing you get 10.

Why you can't do it? Because it hits "the queen of all sciences" right in the face and shows it's not so perfect and not so pure?
81 posts and 2 images submitted.
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>>8082771
https://en.wikipedia.org/wiki/Wheel_theory
>>
hidden reported saged trash scum.
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>>8082771
Because [math]0[/math] has no inverse.
When you "divide" a number in a field such as the reals, what you're actually doing is multiplying by its inverse.
e.g. [math]\frac{1}{2}[/math] is actually [math]1 \cdot 2^{-1} [/math].
Recall from abstract algebra that the inverse of [math]x \in \mathbb{F} [/math] is an element [math]y \in \mathbb{F}[/math] such that [math]xy=yx=1_{\mathbb{F}}[/math], where [math]1_{\mathbb{F}}[/math] is the multiplicative identity.
There are however algebras where division by zero is meaningful like >>8082775 pointed out, but in the field of reals that we are used to, we cannot do so.

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So I found out today my half brother does not believe the earth is round. Does anyone have any fun experiments I can do to show this?

My first thought was buying a telescope to look at the ISS... since he also dismissed the idea of satellites to be hoaxes... *rolls eyes*

The reason I'd like to do some experiments is that I conceded early on that I hadn't performed any of my own experiments and am more than happy to accept evidence provided by other people, images of the earth and how people propose the GPS works. Saying all of these people are lying with some global conspiracy ... to ... erm... sell globes of the earth? idk... is a little coo coo crazy, but It would be nice to prove first hand.
75 posts and 11 images submitted.
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Ask him how GPS works, or why there are crescent moon phases.
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>>8092102
I mentioned GPS to him. He said that he believes they are radio towers made to mimic satellites... I said GPS works in any location on the earth, even in the middle of the ocean with no towers visible... he essentially rejected that to be true and that I've never been out to see to confirm that.
>>
>>8092116
have you? Can you blame him? If you're truly skeptical, you would only believe what you can see with your own eyes.

The earth is a 2D manifold locally. Therefore by integration, it's a flat surface. Wherever you go, the earth is flat just the same.

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Cut my life into pieces
241 posts and 43 images submitted.
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>>8086427
you didn't even fail properly, you could have gotten FAQ BD
>>
What the fuck is a Q?
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>>8086427
lol you're retarded

Are Thorium / molten salt reactors over hyped and unrealistic? or is it really the best alternative we have to the current energy climate?

https://youtu.be/0BybPPIMuQQ
51 posts and 5 images submitted.
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>>8088607
>over hyped
there it is champ
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>>8088607
Overhyped. Completely possible, but not a significant enough of an improvement over current fission technology to care about when we are well on our way to fusion already.
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>>8088615
>when we are well on our way to fusion already.
we are?

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Hey /sci/,
I'm posting this thread because there's been a "smoking isn't bad for you the government is lying" meme going around on this board for some ridiculous reason.
Here are some peer reviewed articles for all you smoking "truthers" out there
Dangers of smoking
http://ije.oxfordjournals.org/content/38/5/1175.full
" The magnitude of the excess lung-cancer risk among cigarette smokers is so great that the results can not be interpreted as arising from an indirect association of cigarette smoking with some other agent or characteristic, since this hypothetical agent would have to be at least as strongly associated with lung cancer as cigarette use; no such agent has been found or suggested."
Dangers of Second Hand Smoke
http://www.ncbi.nlm.nih.gov/books/NBK44330/

If you disagree please post some articles/studies so that we can take the time to read them and tell you why they're right/wrong.
By the way I'm a smoker, I just refuse to have my head up my ass like some people here.

Pic source:
http://pathol.med.stu.edu.cn/pathol/listEngContent2.aspx?ContentID=714
102 posts and 7 images submitted.
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>>8086764
>By the way I'm a smoker
...why?
>>
>all smokers
>never smoked

this implies that the "all smokers" group includes those who have had one cigarette in their lifetime. sounds like some heavy averaging.
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>>8086764
He's saying there are people who actually lie or have bad intent when conducting studies or analyzing results.

He actually doesn't deny that smoking is bad for you (he says nothing about that, to be more precise), but he doesn't like the way it has been forced down everyone's throats.

>this implies that the "all smokers" group includes those who have had one cigarette in their lifetime. sounds like some heavy averaging.
your autism is showing.

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