Archived threads in /sci/ - Science & Math - 444. page
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Sup /sci/ retard here
Someone posted this and I never went to college
Can any of you explain what it is?
Vector flow fields. They are a graphics system that is used to indicate the flow of both mechanical and EM waves. The angle and length of the tiny arrows indicate the direction and the strength of the flow. This can either be used to simulate wind, or water or magnetic attraction and many other things.
>>7789038
it's work, bro
>>7789047
What the fuck is n EM wave
beautifuls molecules
>>7788965
Looks ugly as fuck. That giant ring doesn't actually exist.
>>7789007
are you retarded? Try drawing a peptide with disulfidbridge in another way.
The answer to everything is love.
Love won't get rid of my trigeminal neuralgia.
>>7788962
www.youtube.com/watch?v=ydfH7iuLR0I
there you go, op.
false. the answer is bismuth
Is it true that the concept of "species" loses its meaning when taking time into account?
Species are just a social construct.
>>7788944
How does it lose its meaning? Life is continuously evolving so how species are defined could be said to be based on snapshot frames of reference. But even if you could view a continuous timeline of the history and future of life speciation would still exist. There would just be blurred lines at transitions between ancestor and descendant.
I'm planning on doing comp science next year but I don't k ow much about maths, what should I do before I go to study it at uni, finish the algebra?
Or should I study mechanical engineering instead
Please help
>>7788932
There are no jobs in STEM. Become a welder.
>>7788932
Honestly get on khan Academy and do all the algebra. Master Algebra. A strong foundation of fundamentals is the best thing you can do without overwhelming yourself.
>>7789705
>Master Algebra
a billion times this. Calculus is literally one new concept wrapped up in algebra and trig.
To the limit.
Welcome. To. The. Danger zone.
The object of your desire. The origin of your edgiest buzz.
To the limit. Take it to the limit.
Once I was shy, I was shy like you.
But But But But.
The limit. It is in sight.
If you're deserving of it or not - this doesn't matter now. I don't know why it's such a big deal, really. Take the crown.
My fellow /sci/ bots. Fit it in like only a true dog could. You need all limits. Close it like a Cartesian. Internal to you, you'll find all the function spaces...
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simbli ebik :^)
>>7788909
thx 4 top tips senpai
hey guys im wondering whats the answer for (1-4i)z=10+11i if i need z's imaginary part?
Not doing your homework nigger
![[ReinForce] Sidonia no Kishi - 06 (BDRip 1920x1080 x264 FLAC).mkv_snapshot_00.01_[2015.07.13_01.39.01].jpg](https://i.imgur.com/jI9GbBN.jpg "[ReinForce] Sidonia no Kishi - 06 (BDRip 1920x1080 x264 FLAC).mkv_snapshot_00.01_[2015.07.13_01.39.01].jpg")
it was on my exam but i dont know how to do it, can you help me brah?
>>7788870
>can you help me brah?
yes
are there any home lab crispr starter kits on sale yet?
>>7788850
probably not, given the huge fight about the patents
Many studies show the benefits of taking vitamins supplements. However many others studies advocate that vitamins supplements are not necessary. Extra points for thoughts on fish-oil supplements.
Only necessary if you have a shitty diet.
>>7788841
What's a non-shitty diet?
>>7788841
>shitty diet.
so 99% of Americans
>be me, a 23 year old autodidact who has successfully taught himself to very efficiently use LISP, Python,C, and C++ in the course of a little under a year
>have very serious aspirations of becoming an astronaut
>no formal college education
is it possible to stay on this self taught computer science route and one day,(10 years or so) become an astronaut?
What do you use these languages for?
why the fuck would you want to be an astronaut?
just continue with cs, get a cs job, and shut up
>>7788834
> taught himself to very efficiently use LISP, Python,C, and C++
>self taught computer science
Computer Science =/= Code Monkey
Let's assume I have a relatively large sample (500) from an unknown distribution. I can calculate sample mean and variance, can I calculate confidence intervals for them? I've googled and found that because of the central limit theorem it should somehow work out for the mean (what distribution would I use in the formula tho? Normal? T?)
What about variance?
Pls help?
Also stats thread or whatever.
https://en.wikipedia.org/wiki/Central_limit_theorem
First. Fucking. Sentence.
>>7788853
kek.
I think you misunderstand the meaning of the CLT.
>>7788853
Relax, if I understood everything I've read I wouldn't post here, would I? I'm shit at stats (and don't really understand confidence intervals), so I was hoping someone could explain this to me. Clearly, you're not the person for the job?
>In probability theory, the central limit theorem (CLT) states that, given certain conditions, the arithmetic mean of a sufficiently large number of iterates of independent random variables, each with a well-defined expected value and well-defined variance, will be approximately normally distributed, regardless of the underlying distribution
Okay, so how does that answer my question? From this I can learn that the average value is approximately normal if I have a large enough sample. Is that sufficient enough reason to use the z table? What about variance/standard deviation?
What were the biggest downfalls of the Saturn V? What could we do better today?
How much more efficient would a Saturn V be using today's technology?
>>7788767
>What could we do better today?
How about near-complete reusability?
https://www.youtube.com/watch?v=ANv5UfZsvZQ
>>7788767
>How much more efficient would a Saturn V be using today's technology?
Not as efficient. There are better designs that work far better. And they use space shuttle solid rocket engines (and main booster engines that are closely modeled after the F1 engines on the Saturn V).
So I'm trying to imagine the dot product intuitively and I'm wondering if it would be right to think of the dot product, if we're using two vectors A and B (imagine that there's an arrow over those letters), as the multiplied amount vector A is in the B direction or vice versa since it's the same value. like when I try to do the dot product I align one of the vectors on an axis and project the other vector onto the axis-aligned vector and the length of that is the amount the projected vector is in the direction of the axis-aligned vector. I don't...
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pls halp I've been trying to figure this out for ever
>>7788694
The dot product can be intuitively understood as the area of a rectangle with one side one of the vectors and the other side the orthogonal projection of the other vector onto that vector. Or it can be understood as half of the difference between the areas of squares formed by two vectors and the area of the square formed by their difference. The former tells us that the dot product of a vector with itself is the area of a square formed by that vector, which leads to the latter understanding, and the latter understanding...
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Only *pulls shirt* cokesniffing posht-Hegelian exsh-block philosophersh may understand de *sniff* dot-product.
So /sci/ how can we beat cancer?
What are the best medicine and programs to use on stopping this terrible disease
We beat cancer by accepting the fact that it is not one disease, theres is hundred of different cancer. The we do what we are doing ritgh now : trying to find better radiotherapy/chemo/surgery protocol, investing in antibody/chemo/radiotherapy research, working on in vivo DNA alteration... Nowaday evything is about targeted antibdies (Erceptin anyone ?) but my own shitty and arbitrary opinion would be that in vivo DNA alteration is the way to go in the long term. Imagine b eing able to find a procancerous mutation and cure it before you have a cancer ? We are going there with...
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>>7788715
I feel it's a bit of a misnomer to call it a disease. Like, things caused by virus or bacteria can be diseases. Addictions are addictions, not diseases. Cancer, Alzheimer's, MS and such, aren't really the same thing are they? Genetic maldunctions? I don't know.
>>7788734
We are now 100 sure that at leats some cancer are caused by a pathogen, thats the only "raison d'être" of these new anti HPV vaccines (Gardasil for instance).
Moreover, english is my second langage so I may be mistaken, but disease is any alteration of health, no ?
I had two radios on in my house. One in the kitchen and one 5 meters away in a bedroom.
Both were tuned into the same station. On this station people were talking.
The first radio was ahead by a fraction of a second. Then the second would pick up behind.
What causes this effect?
Is it the distance between the two picking up a radio signal at different times?
Or is it the quality of the radio?
>>7788674
Is it am, fm, or digital radio?
>>7788692
FM/AM ... One is a dedicated radio the other is a radio on an alarm clock. I was tuned to an FM talk station.
It's obvously the processing speed of the radio you fucktard.
