Archived threads in /sci/ - Science & Math - 251. page
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Hi /sci/, I was fucking around with GeoGebra (shitty math program) and wondering why pi has the value it has. So I decided to check the circumference/diameter-ratios of other regular shapes than the circle. I did this by taking the circumference divided by the longest possible straight line you can draw inside the shape. Obviously the values got closer to pi the more sides the shapes got, but why the fuck do they oscillate towards it?
>pic related, it's the values
>>7970187
GeoGebra ain't to shit man, I like it cause I can drag points where I want them so I can easily manipulate the experimental results from the lab giving me great lab reports :^)
>>7970191
nice, i guess the program is okay for geometry
>>7970195
It does a good job at fitting data as well. I don't think it can (or I don't know how to) plot large amount of data from a file, something like gnuplot's plot "whatever.dat" using 1:2 with lines
Hello, I was wondering if you guys had any good advice for learning many new words as quickly as possible. I would like to spend less time on memorizing words.
Visualising it, dont learn the translation.
>>7970172
Use Anki.
https://ankiweb.net/shared/decks/mandarin
>>7970172
Read fiction books (simultaneously reading translation in your native language on a parallel screen), m8. I have learnt English and Norwegian this way. Now I'm learning German.
/sci/, i'm really interested in neurosci, especially demyelinating diseases (CIDP and alzheimer's, specifically). for the sake of job security, i was thinking of minoring in biomedical engineering.
is this a wise choice? will scientists 20-30 years from now be able to focus on just the physical without knowledge of the digital, or should i get a headstart and be as adaptable to change as i can?
also, is python's future as the language for systems-integrated platforms a meme? is there any prodigal son out there who will be THE language for neural engineering or no?
this is an open topic, not an /adv/ thread
Major in comp sci then minor in neuroscience. Develop AI
Like do you have to be a neurosurgeon to study neuro science?
Its mandatory i guess i mean you need to know brain very well to begin with
Is there a situation where [math]a^2 + b^2 \neq c^2[/math]?
>>7970091
a = 1
b = 1
c = 2
>>7970091
In non euclidean space
>>7970098
the Pythagorean theorem requires that the triangle contain a 90 degree angle, does it not?
Are magnets fucking magic?
Why no coilguns yet?
>>7970061
>Why no coilguns yet?
The problem is not killing an enemy, it's hitting him
>Are magnets fucking magic?
No, just quantum mechanics. So basically yes its fucking magic
>>7970065
What's that about hitting or killing?
I'm interested in coil guns. I've been led to believe that even with an optimally timed series of coils, the acceleration drops exponentially with velocity, making it next to impossible to get fast enough to be effective.
Is there also an accuracy problem?
>>7970076
>What's that about hitting or killing?
http://www.globalsecurity.org/org/news/2005/050925-israel-bullets.htm
>I've been led to believe that even with an optimally timed series of coils, the acceleration drops exponentially with velocity, making it next to impossible to get fast enough to be effective.
I don't think so.
I am no expert, but I don't think there is any reason to not just use regular rifles. They are cheaper...
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Hey /sci/ I have a hypothetical and I am dumb. Remotely viewing places and people without the apparent use of cameras. Purpose is surveillance of individuals and environments. How might this be accomplished technologically. Microwaves, X-rays, bouncing sound waves to build an image. Any ideas?
>>7970004
Depends on how far away "remote" is.
>>7970004
>without the apparent use of cameras
Just use small cameras and hide them
Just look up remote sensing.
Can a function like this be integrated? It definitely has a lower and upper bound on the total area enclosed by the graph.
yes! using the method of lebesgue integration
>>7969987
Depends. Are you talking about this Weierstrass function in particular, or non-differentiable functions in general?
Absolutely. In particular, the Weierstrass function has a trivial antiderivative that follows directly from the antiderivative of the cosine function.
it has to be incredibly small, i don't know much about biology, but I assume there isn't anything special about earth's mechanics of genetics
>>7969807
33.334%
It's more or less a game of luck.
Its either DNA or not DNA so exactly 50%
>>7970456
That is assuming these two odds are intrinsically equal which is not necessarily true.
>>7969742
I travelled to the HIV+ dimension via your mums brown hole
You should try it and report back.
>>7969746
If emf is a tupe of measure of energy, why is it called a force?
Fuckig ee's
Practic end.
Why do people think that current moves from positive to negative?
Answer: convention.
>measure of energy
no, potential
What's so difficult about this problem? Why can't you find 0 anyway?
Wait so was it really solved? I thought there would be bigger reception over it. Or is it just a Nigerian Prince tier scam?
>Having an imaginary exponent in a fraction in an infinite sum
>>7969487
If I remember correctly the problem had been solved before, but it was still pretty dificult
Check on a percentage calculator site and it will tell you 8,000 is 32% of 25,000.
Plug it in on a calculator and you get 212.5%. Wat.
25,000-8,000=17,000
17,000/8,000=2.125
2.125*100=212.5
Am I retarded?
>>7969461
>8,000/25,000 = 0.32
>>7969461
This is some Facebook-friend-from-10-years-ago level retardedness. Good bait.
>>7969462
Damn.
>Tfw stupid.
Considering that depression is correlative with a high intelligence, does this not mean that anti-depressants are intelligence reducing?
>>7969452
>depression is correlative with a high intelligence
<citation needed>
>>7969452
As you said, it's just correlation.
And even if high intelligence implies higher risk of depression, these two things are certainly not biconditional.
Tumblr proves your theory otherwise.
In all seriousness though, psychology fag here. High intelligence is correlated to depression, not the other way around. Like saying all Catholics are Christian, but not all Christians are Catholic (poor and unrelated example, but you should get my point now). Depression drugs don't decrease intellect, but inhibit certain thought processes that focus in the areas of work ethic. If work ethic is directly connected to intelligence, your theory is true. However, it isn't.
Suffice to say, antidepressants do fuck up smart...
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Why is UFC champion Jon Jones so much whiter than his superbowl champion brother Arthur Jones?
What explains this scientifically?
Lots of US slaves had sex with mostly white slaveholders.
Lots of mixed babies.
http://www.cell.com/ajhg/abstract/S0002-9297%2814%2900476-5
The average African-American genome, for example, is 73.2% African, 24% European, and 0.8% Native American
They look whiter because some of their grand grand parents were white.
>>7969379*
So Jon Jones likely has a lot more "white genes" in him than Arthur Jones.
Or they have equal amount of European genes but they're more dominant in Jon Jones.
>>7969375
Because genetics is more complicated than what high school shows you.
http://nypost.com/2015/03/02/meet-the-bi-racial-twins-no-one-believes-are-sisters/
Are we gonna get cucked again like before like KIC or is there a tiny chance we can detect alien signals ?
http://www.popsci.com/seti-expands-search-for-life-to-20000-new-star-systems
>>7969342
popsci.com
>>7969346
this.
