Sup /sci/.
I have learned two things about osmosis across semipermeable membranes:
#1: Osmotic pressure is defined as a solution's ability to resist an inward flux of water (i.e., a solution's resistance to osmosis).
From wikipedia:
>Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.
Osmotic pressure is given by [math]\Pi = iMRT[/math]. Higher osmotic pressure means lower inward fluxes of water.
#2: If you add a solute (that cannot cross a semipermeable membrane) to solution A of two solutions A and B separated by a semipermeable membrane, water will be drawn from compartment B into compartment A due to concentration differences.
As I'm sure you can see, #1 and #2 directly contradict each other, since according to [math]\Pi = iMRT[/math], the osmotic pressure of solution A increases, which means that it will resist the inward flux water more strongly.
Would you please explain to me what I'm misunderstanding here?
>>8008818
Both happen at the same time and eventually reach an equilibrium.
Oh hey you're that anon that tested his π latex in that one thread from earlier.
>>8008818
To further expound on this: If you consider the osmotic pressures of the two solutions in the pipe on the left in my OP picture, you can see that solution P1a has more solutes than solution P2a, and thus P1a has a higher osmotic pressure than P2a, which dictates that water will flow from P1a to P2a.
This clearly does not happen, as evident by the tube on the right-hand side, where the opposite has happened.
Consider a person attacking another random person.
If a female chimpanzee hits a male chimpanzee, does he hold back at fighting back?
Do monkeys have such social norms?
>>8008682
why the fuck would a female chimpanzee hit a male chimpanzee?
Chimpanzees aren't monkeys.
>>8008685
male grabbed butt of female, silly
How dangerous is the pill? Someone said to me they are extremely dangerous and if you take them for many years you really mess up your body. Is that true? Are there any serious sources as I'm not trusting those "medicine websites" telling me the only side effects are rare and probably just headache, etc.
>Are there any sources that will solidify my confirmation bias
>>8008435
So... who exactly ARE you willing to trust?
>>8008435
Not usually anything serious, pretty similar to any medication really. It actually protects you from certain kinds of cancer, so thats nice
Explain to me how transgenderism isn't a mental illness?
I have yet to see how they aren't just a bunch of psychotic faggots.
we don't discuss lgbt garbage outside of /lgbt/
>>8008172
It's certainly a mental illness. If you doubt this go to any hospital or psychiatric centre and tell them "I'm thinking of mutilating myself, I really want to cut my penis off" and see what happens. So why do we allow it to happen? Well partly because society has become more tolerant but also because, as it turns out, transitioning is the only way to reduce the daily anxiety that people with these delusions suffer from.
>>8008172
Politicization of clinical psychology, an already spurious discipline.
I'm starting graduate school in pure math this fall. Is this book any good? Also, how do I start an academic book library as a cheapass poor grad student.
>>8008120
torrents
bookzz.org nigga
libgen.io [insert annoying black slang here]
Space exists, so it has to be something, it has to consist of something. Like, shouldn't space be made of 'units of space' that can, at least theoretically, be observed and measured? Mass has an effect on space, in other words space itself can be affected which would also mean it can be manipulated.
What is space? I know some of you guys actually know shit, help me out.
>>8006716
As far as physics goes, "space" is just a placeholder for "area".
https://en.wikipedia.org/wiki/Space
It really is just a set of coords to represent a location. You don't actually affect space, you affect the objects in it. You can represent that as using an alternate set of coords to show that "space" has been affected.
>>8006716
Mass has an effect on fields which permeate space, but it doesn't have an effect on space itself. Space is just a place that holds all these things.
Hi, I'm a mexican Mechatronics engineer, who always wanted to study something aerospace related. Due to family problems, I couldn't.
Now, I'm looking for a Ms.C. which can give the skills, to join this wonderful indsutry.
My most inmediate goal is to join a proper Masters program for this purpose, that's why I come today to you, /sci/chos to give me a proper guidance or recommendation.
Previosuly I asked about the topic, saying it pigeonholed me chossing this.
My main questions are:
>What to expect from the working enviorment?
>What to expect from the academic enviroment?
>Which one are you currently into?
>Which one do you think it's better?
>What is your day to day routine/ Is your lifestyle determined by aero and how?
>How much are your earnings?
>Where did you graduate from? Was it good?
>Considering my academic BCKGRND, which topics sould I reinforce/study more?
Lastly, the CONACYT is the funding authority in my country, and has already made certain alliances with the following universities?
http://www.conacyt.gob.mx/images/Becas/Listado_de_Convenios_de_Colaboracion.pdf
Which one and which programme do you recommend for my purpose? (considering my background)
(also consider what would be the nicest city to live in "lifestyle/expenses/food/g̶i̶r̶l̶s̶")
I would gladly thank your replies. Have a good day.
>>8006556
Bro, I'm a Mech E. from Mexico and I'm wondering the exact same thing.
Last year there was a program by CONACYT to do you masters in the UK (on something related to astronautical/aerospace engineering), I'd recommend searching for something similar.
Narrowing the list, I highlight the actual univiersities who offer an MsC Aero program, supported by CONACYT
UK:
>Cranfield
>Bristol
>Sheffield
>Manchester
>Southhampton
>Leeds
USA
>Purdue
>USC (Viterbi)
Japan
>University of Tokyo
Spain
>Polythenic University of Catalunya (UPC)
>Mexico
>UNAQ (querétaro) (It's new, and not yet with CONACYT recognition) >>8006833
ALso, here in mexico I find the following masters (which I think could be related to the industry, but not sure)
>Structural Engineering
>Building Materials
>materials Chemistry
>Mechanical Engineering with Spec. in Materials
Fucking mexicans
Just kidding, im mexican too. Currently craving some corn truffles
Hi , I want to read about alqumia and wanted to know if I can pass books on the subject (Obviously that can be downloaded from any page )
Thank you!
>>8005163
Your native language is spanish?
Yes, I not speak in english :(
And read*
>worried about the overpopulation crisis and man's damage to the environment
>pump more money into cancer, diabetes, Alzheimer's, obesity and mental health research to save precious lives
Why are scientists such hypocrites?
because people working for a better society get cancer, alzheimers and mental health issues as well
>>8004794
But what about the overpopulation crisis and man's damage to the environment?
>>8004791
I don't give a shit about your infantile "ethics". I just wanna get rich.
If I were to count for an infinite amount of time, what number could I count up to?
depends on how you are counting
>>8003757
One number per second, for simplicity.
>>8003758
Then you could count to one, for sure. Possibly even two.
/sci/, I very legitimately don't understand the Monty Hall problem. As a matter of fact, I think I don't understand probability in general.
So for the newfags who don't know the Monty Hall problem: https://en.wikipedia.org/wiki/Monty_Hall_problem
But anyway, my beef with it is this: When you are asked whether or not to switch doors or stay with your choice, isn't that a fundamentally different probability set than when you were first asked to choose?
I get that the idea is when you first choose, you only have a 1/3 chance of getting it correct. By switching your answer after the reveal, you raise your chances to 1/2, since there are now only 2 doors to choose from.
But isn't sticking with the door you chose also a choice? You're presented with 2 doors, you have to choose one. Choose to switch, or choose to stay, you've chosen among 2 doors all the same - shouldn't your chances be 1/2?
I think this holds up even vs the example that is supposed to make it easier to understand, where there are 100 doors, and you choose one, and then 98 are opened up and you still have to choose. It's a fundamentally different set of doors you're now choosing from, right?
>>8007895
there's three possible outcomes: {goat1, goat2, car}
if you picked a goat (2/3) then switching will get you a car whereas if you picked the car (1/3) switching will get you a goat.
So in 2/3 of possibilities switching will get you a car.
Actually, here's another beef I have with probability. Supposedly, with a hypothetically perfectly random coin, every time you flip the coin, there's a 1/2 chance of heads and a 1/2 chance of tails. EVERY time you flip the coin, regardless of what you've flipped previously.
And yet, to calculate the chance of flipping 3 heads in a row, one uses (1/2)*(1/2)*(1/2), which is 1/8. So on the first flip, there's a 1/2 chance of getting heads, then, on the second flip - since the chance of getting two heads in a row is 1/4, surely the chance of getting tails is 3/4?
What am I missing here? A fundamental understanding of probability, I guess.
>>8007895
You can easily google this to get your answer.
The entire point to this thought experiment is that the person that opens a door after your initial choice knows what is behind each door. Given that he knows what is behind each door and won't open the only door you don't want to select, even a grade schooler can draw a simple diagram for each case and conclude that you're better off switching doors. If the person opening a door for you doesn't know what is behind any of the doors, it's a 50/50 chance, given that he doesn't open the "losing" door after your initial choice, in which case you will win 100 % of the time unless you're literally retarded.
As an undergrad doing research, how do I get rid of impostor syndrome? I know what I'm doing, but I feel like I shouldn't know what I'm doing. Does that make sense?
>>8005976
thats the opposite of imposter syndrome
I had never heard of this before. I looked it up and holy shit it's me in a nutshell.
>Despite external evidence of their competence, those exhibiting the syndrome remain convinced that they are frauds and do not deserve the success they have achieved. Proof of success is dismissed as luck, timing, or as a result of deceiving others into thinking they are more intelligent and competent than they believe themselves to be.
I don't mind though because it gives me incentive to not become complacent.
>>8005976
Short answer is that you don't ever really get rid of it. I'm a post-doc and still feel like I really have no business doing what I'm doing. At some point it jus kind of gets mixed in with a misplaced sense of arrogance where you feel some strange satisfaction when your peers fail at things that you succeed at, yet you can never really be happy with your own success because you feel that it is unwarranted and will get taken away at any moment.
I'm teaching Algebra I next week to the "troubled kids." How fucked am I? Any tips for keeping or getting their attention?
Balancing an equation is like balancing your life homes.
Lifes is like full of mysteries, and like, sometimes you have to solve for x.
But you gotta learn the correct order to do things in homes.
>>8005974
Use a graphing first approach. Have each member of the class come up and plot one point on the board until a line begins to form, conveying the idea that a line is just an infinite number of points, and that algebra is just about relations.
troubled kids as in troublemakers or slow people ?
Someone here uses GNU Octave? What can you say about it?
runs all my cfd code just as good as matlab
>>8005862
its not as good as matlab.
Is there any way to "show" octave code in a natural format i.e what TeX format does.
>oh so you're going to be a teacher?
>>8004732
>h-h-hey, want me to prove to you that the reals are uncountable?
>>8004735
At least he's not sitting next to a fucking baby.