Archived threads in /sci/ - Science & Math - 159. page
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JUST
>>8062440
Is that supposed to be difficult?
>>8062447
for kids like OP, yeah
F = kx
Fc = (mv^2)/r
Wow 2 equations op so hard
Is the "academia is awful" meme only true for soft subjects? Surely physicists, engineers, computer scientists and mathematicians are judged on results?
It does seem to be a true meme for many subjects. Anything that is economics or softer seems to require you to be at an elite university before people care about your work. Chemistry and biochemistry etc require shitloads of brainless lab work.
Also, is the "most research is useless" meme true for sciences?
>>8062412
Most academic research is "useless" in that it lacks either a direct or immediate payout. This is not to say that it shouldn't be done as blue skies research is what generally leads to significant advances, but such advances are neither quick nor dramatic the majority of the time. This need for long term support makes such efforts a generally poor target for industrial support which is driven by short term gains (an exception is the pharmaceutical industry where the necessary testing and approval regiment...
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>>8062431
yeah but even pharma doesn't support academic research because the reality is academic research doesn't have the same stringent reproducibility requirements as industry
if you're doing science for a company your results need to happen every single time
if you're doing science for academia it only needs to kind of work once, and you can crank out a paper and be done with it
amgen complaining about this issue: "In 2012, Amgen researchers made headlines when they declared that they had...
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Why do you think we haven't been visited by ayy lmaos?
>>8062396
We are not ready yet.
Their science and their understanding of reality are too advanced.
because we are the ayy lmaos
its the only logical conclusion...
+ayy lmaos should have visited us by now
+we have advanced technology both a long time ago and present day
+they believe we arrived here as bacterias on a meteor
just think about it. all this time we've been searching for ourselves
same reason I dont visit africain tribes
Every maths misconception is actually secondary school maths teachers' fault, because they don't think like formalists.
They talk as if mathematical objects really exist, and then wonder why students object to certain mathematical objects existing.
>"i" is defined as the square root of -1!
What does this even mean to a student? Nothing! There never was a general concept of "square root" given to them. And there's no reason to believe that just saying something at random won't break all of...
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>>8062347
>"i" is defined as the square root of -1!
That's not how it is defined in highschool
The issue is that even accomplished logicians will defend a Platonist position (in fact, instead of ever defining a Platonist position, they declare the opposite as absurd and speak negatively of those who hold it).
But looking back at math reforms (pic related), you can't teach the general kid interesting conceptions, appearently. Probably, there will always be just plug and chuck and crying about it
https://en.wikipedia.org/wiki/New_Math
Highschool graduate here, i want to go into computer science, but im unsure of some things.
First, is your skill or talent as a computer scientist based on how many coding languages you know?
What i mean is will my chances of being able to do research with professors depend on my coding ability?
Should i start learning as many languages as possible right now?
Also what kind of graduate work will i be doing? I want to design new computers and devices like steve jobs.
enroll in an online degree asap
programming languages are a means to an end. what you should really learn is math.
>>8062245
>like steve jobs.
First of all, kill yourself for wanting to be "like steve jobs".
That aside, computer science isn't only about coding, unless you're at some mediocre uni in the US, trained to be a code monkey programmer, in which case your coding ability might as well be the only criterion for being good at "computer science". Actual research in computer science will require apt mathematical skills as well, not just coding ability. Finally, designing...
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So I knocked my wife up and she's pregnant with twins. At week 10 our doctor offered a cell-free fetal DNA test to tell if either of the fetuses have any chromosomal abnormalities.
Everything checked out fine. No retards in there. The doctor also could tell us that they detected a Y chromosome in there, which means we're having definitely having a boy. However the test isn't able to say if we're having two boys. Since they aren't identical twins, there's a possibility that there's a female in there as well.
At this point the doctor says...
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![1260056-coat_hanger[1].jpg](https://i.imgur.com/ym8jFjV.jpg "1260056-coat_hanger[1].jpg")
if you wanna take a quick peek...
Two babies are cute
>>8062204
If you had octouplets and knew that 7 of them are boys, would that make the eight an almost certain girl?
Stop your retardation right now.
I get how traveling near a larger mass than earth would cause a person on earth to see the traveler as taking a longer time, BUT...
In what scenario would a person on Earth see a traveler as only having been gone a short time, whereas the traveler may have felt like they have been gone for years?
All I can think is put the earth near a large mass or speed it up. But there's not much the traveler can do besides sitting still near no mass, right?
I have the following differential equation:
[eqn] LQ'' + RQ' + \frac{Q}{C} = 230 \sqrt{2} \sin(\omega \pi) [/eqn]
I want to know if I plug this into a function correctly. I put [math]Q' = I[/math]. Then we get:
[eqn] LI' + RI + \frac{Q}{C} = 230 \sqrt{2} \sin( \omega \pi ) [/eqn]
If we then define the vector [math] \mathbf{y} [/math] as [math]y_1 = I[/math] and [math]y_2 = Q[/math]. We get:
[eqn] y_1' = \frac{230 \sqrt{2} \sin ( \omega \pi )}{L} - \frac{R y_1}{L} - \frac{ y_2 }{LC} [/eqn]
[eqn] y_2'...
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This is my function file:
--------------------------------------------------------
function dydt = ode5( t,y,R,L,C)
dydt = zeros(2,1);
dydt(1) = ((230*sqrt(2)*cos(100*pi*t))/L)-(R*y(1)/L)-(y(2)/(C*L));
dydt(2) = y(1);
end
--------------------------------------------------------
This is my script:
--------------------------------------------------------
R = ...;
L = ...;
C = ...;
tspan = linspace(0,1,10000);
y0(1) = 0;
y0(2) = 0;
[t,y] = ode45(@(t,y) dv5(t,y,R,L,C),tspan,y0);
plot(t,y(:,1),t,y(:,2))
legend('i','q')
--------------------------------------------------------
Now...
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>>8061854
>Where the hell did I go wrong?
wrote shitty code.
magic numbers
called your function ode5 for some reason
not enough matrices
>>8061867
How do I improve? Please I want to learn.
![863385284hamburger-fast-food-french-fries-Favim.com-483020[1].jpg](https://i.imgur.com/4PAO12Z.jpg "863385284hamburger-fast-food-french-fries-Favim.com-483020[1].jpg")
If v'(x) = u(x), and y denotes some function, does v'(y) = y*u(x)?
>>8061752
Sorry, meant:
Does v'(y) = y*u(y)?
>>8061752
What is v? What u? What is x?
Does v' mean the derivative?
>>8061759
Yes.
https://en.wikipedia.org/wiki/Notation_for_differentiation#Lagrange.27s_notation
v and u are both functions
Dreams can actually change your personality. Why is this even possible?
>>8061709
Did you just watch inception? It doesn't work like that in real life.
i think it does
i had a super vivid dream last night about sucking my cats dick
>>8061709
>why is it even possible for a mechanism's operation to change its structure
Rather than answer your question I rephrased it in order to point out how stupid you are.
So what are the opposing arguments to the motion "psychology is a science"
Psychology lacks objective constants and baselines for scientific study because the human mind and the way it reacts to things does not have agreed upon definitions or guidelines.
>>8061620
Mathematician here. I personally think that psychology is an important up and coming experimental science. It doesn't have the foundings that the other sciences have, but it's improving all the time, theories being replaced by newer ones, and once it does have a proper founding, I believe that it can really go far.
>>8061620
It uses the scientific method therefore it is a science.
The problem is that many non scientific ideas long ago crept in to psychology and they have a hard time getting rid of those ideas.
However there are plenty of examples of good science in psychology. Get over it.
I know. embarrassing.
My Brother, bless him, has recently discovered Youtube (he's 46). Anyway, today he tells me..
>big lizard dinosaurs are fake
>the chinese created false bones for sale to museums
>they used whale bones or giraffe bones to create fake dinosaur blueprints
>there is not one single full skeleton of a large lizard-like dinosaur (t-rex etc)
Oh and my favourite
>"they"...
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>>8061590
No.
He's absolutely right.
>>8061590
Why don't you go to your local natural history museum and have your brother talk to a curator?
is it just (non-avian) Dinosaurs or does he believe all paleofauna (maybe even flora?) is fake?
I'll keep this short. Does anyone know a doctor or treatment for alcohol induced dementia? My dad has got dementia literally out of nowhere from alcohol abuse.
>>8061565
He bent his dendrites so hard for so long they can no longer bend back to shape so the neurons can communicate properly. If he tapers off drinking and quits it won't get worse. However, sudden stopping of drinking for an alcoholic can damage the brain.
As far as reversing the process, I'm not sure. cognitive exercises are usually the best course of action. Things like jigsaw puzzles for instance.
He most likely has alot vitamin deficiencies including B12, folate, and thiamine. Thiamine is probably the most likely culprit for the dementia. He should probably go to a doctor to get IV injection of it for most benefit, but if he doesn't want to I guess you could try oral.
>>8061663
I'm actually a doctor btw
I think I've finally outsmarted, /sci/.
>>8061555
The only thing that matters is the volume moved, so the force is the same in each bottle. 2', 5' and 10'? What freakin system is that?
>>8061555
>non-metric units
>>8061643
It's worse anon it uses BOTH metric and non metric
Forces is less as it gets deeper because air is compressible. That is if bottle is open at bottom
What is actually a fallacy and why does /lit/ and /pol/ and other boards say it so much?
Does /sci/ care about fallacies?
>>8061515
Faulty reasoning. Wikipedia is your friend.
/pol/ mentions it a lot as a counter-measure, to try to hide the fact that they use them in pretty much every post they make.
/lit/ mentions them because constructing philosophical arguments is all they have so errors in their arguments will be commonplace to point out.
Yes, /sci/ also mentions fallacies when they are having a more philosophical rather than scientific argument, and you should be able to construct such an argument and find the errors in...
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>>8061515
https://en.wikipedia.org/wiki/List_of_fallacies
Should i respect people who cite fallacies then?
I'm not sure how to feel when someone just lists a bunch of latin words and says fallacy and argument over and over.
