Archived threads in /sci/ - Science & Math - 192. page
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/SQT/ all questions are stupid edition
I'll start:
this one is for biochemists/molecular biologists, what the flying fuck constitutes a low or high Km value?
old thread is dead >>>8009716
How do I actually use the MIT OCW?
(I mean the physics and chemistry lectures which have no video)
I'm self studying math physics and chemistry for a scholarship test in 2 months, would you mind giving me advice?
And yes, I am retarded for not knowing how to approach this.
>>8022778
>this one is for biochemists/molecular biologists, what the flying fuck constitutes a low or high Km value?
Km is a parameter in the Michaelis Menten equation.
From the equation you can see that when [S] = Km then V = 0.5Vmax.
>>8022953
so (bear with me) if the value is over 0.5 we can assume it is relatively "high" and if it falls below, it is low?
I have 0.98 which according to a paper is high, but my curve looks like a curve for a high Km value
i need to get drunk
Does /sci/ see it?
Its saturn
I like to cross my eyes twice when looking at those
It looks like a small saturn in front of a fat one
>>8027964
crossing has strange results here.
it's made for parallel
Define what a real number is.
The limit of a convergent sequence of rational numbers.
>>8030689
Define a limit without using real numbers.
>mfw normies do math with reals
Why do people think Psychiatry and Psychology are not Sciences?
They follow the Scientific Method.
They have Scientific Laws and Scientific Discoveries.
They have repeatable experiments.
Neurology, a physical science, has confirmed most of Psychiatrists claims.
Medications sedate and stimulate patients based on confirmed chemical imbalances and genetic disorders.
It's every bit as advanced as Physics, Chemistry and Genetics.
Are people just undereducated?
>>8031218
memes mostly
>>8031218
http://www.nature.com/news/over-half-of-psychology-studies-fail-reproducibility-test-1.18248
The same people that deny psychiatry and psychology are sciences are the same types of people deny that statistics and other forms of sciences [ie; evolution].
> University you're currently or did attend?
>Major?
>Did you pay with CASH or STUDENT LOANS?
>Will you be working for the rest of your life to pay back your student loans like a slave?
> Did your parents help you pay for college?
>What will you do with your degree in the next 5 years?
>>8014549
MIT
CS
Loans (fuck you Navient)
Yep pretty much anon...
Nope they hate me
I'll probably off myself.
>>8014549
> University you're currently or did attend?
ENS de Lyon, in France
>Major?
Mathematics
>Did you pay with CASH or STUDENT LOANS?
Actually, I'm getting paid 15k a year to attend, yearly fees are about 150€
>Will you be working for the rest of your life to pay back your student loans like a slave?
No, but I'm engaged to do my PhD in France and work for...
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>How much did you or are you paying for your STEM degree?
169€, twice a year
> University you're currently or did attend?
Göttingen, Germany
>Major?
Physics
>Did you pay with CASH or STUDENT LOANS?
CASH
>Will you be working for the rest of your life to pay back your student loans like a slave?
/
> Did your parents help you pay for college?
Yes.
...
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Is there a connection between one's intelligence and the shape of one's nose?
Has there ever existed an intelligent person with a snub nose?
jidf detected
girl from my algebra II math class in hs seemed pretty smart and she had hella snub.
too bad she died though she was cute af
No.
inb4 jew jokes
Why are molecule shiny?
>>8028032
Because you use shitty rendering software.
>>8028032
Cause they look cooler when you render them that way.
>>8028032
This is just a visualisation. Speculiar highlighting helps reinforce depth perception, and as such improve the clarity of the model.
Examples would be acing Analysis proofs but forgetting how to integrate by parts.
>>8014898
d[fg]/dx = df/dx g + f dg/dx
∫d[fg]/dx dx = ∫df/dx g dx + ∫f dg/dx dx
fg = ∫df/dx g dx + ∫f dg/dx dx
∫df/dx g dx = fg - ∫f dg/dx dx
QED
>>8014913
Integration by parts was a godsend, as 10 minutes on substitution on the last day of calc 1 was not sufficient in teaching it
I've graduated with a BS in math, I tutor calculus, I'm in a PhD program for computational chemistry, but I don't know how to do polynomial division (synthetic division).
Oh well.
How has nobody come up with a way to solve the traveling salesman algorithm efficiently? Why cant you just use a powerful computer to brute force it quickly?
>>8029203
The point is that there is no way to solve it other than by brute force
>>8029212
so whats the problem with using brute force? does it really take that long to solve when using a lot of destinations?
>>8029220
If your list of places is billions long, then yes. Travelling salesman and cities is just an example, its the structure of the question and the inability to solve it without brute force that makes it interesting
>Jon Von Neumann has already come up with everything
>>8028753
Of course, he was a jew.
>>8028753
>tfw will never even be 1/5th as smart as him
>>8028812
> implying you can quantize his intelligence
you have no idea whom you're comparing yourself to anon
>Skolem Paradox
>There exist countable models of set theory in which there exist uncountable sets
Of course, it isn't actually a paradox, but only seems like one to those who don't fully understand what's going on.
Post ostensible mathematical paradoxes.
...
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Here's another one:
Say a real is [math]definable[/math] if there exists a parameter-free formula in the language of set theory that defines it.
Clearly, there are only countably many parameter-free formulae, so one would expect there to be only countably many definable reals.
[math]\textbf{Paradox}[/math]: It is possible for every one of the uncountably many reals to be definable.
Proof: The reason the logic that there be only countably many reals is invalid is that, by Tarski's Theorem on the Undefinability of Truth, the map identifying...
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>>8011997
Too bad (or assuring?) that of course an inconsistent theory still proves its consistancy and what this extension theorem is about doesn't give a theory without unprovable Gödel sentence.
>>8012044
The problem is that ZFC has such a shitty rich variety of models. The theorem is interesting, but hard to grasp and the fact that the """"set of reals"""" is so much not really defined by ZFC discourages me to look further...
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What's the point?
Humans have spent the last 60 million years carefully adapting to life at EXACTLY this pressure/temperature/chemical compilations and now you want to go into a sub-zero vacuum full of deadly cosmic radiation and material debris whizzing around at 100 miles a second? Just to satisfy some mundane curiosity about the PH levels of the soil on Mars?
What a fucking joke. Only NEET's with no concept of the vastness of space think interstellar travel is feasible, the few deluded schmucks too busy fapping to alien waifus to realize the futility of...
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>>8026345
That's funny because fedorafags are exactly the type the think that if we didn't have Region holding us back then he'd be busy banging some blue-skinned cutie on the outer rim of Neptune.
>tfw Earth gets 0.01% of the energy output from the Sun and this powers all kinetic motion on earth
Kek, we're like some sort of parasitic worm living off of the fucking errant spit of a passing entity. And we think we can make claim to the cosmos around us - pretentious.
How are [math]0\cdot\infty[/math] and [math]1^\infty[/math] "indeterminate forms", given that [math]0+0+0...=0[/math] and [math]1*1*1...=1[/math]?
[math]0[/math] is the identity element of addition, and no matter how many you add together, it will still be [math]0[/math]. The same goes for [math]1[/math] and multiplication. What gives?
Because there are sequences that do not converge to 0 or 1. Algebraic rules do not apply here.
>>8024686
Because arithmetic does not apply to infinity
>>8024686
you are right, actually. if you define arithmetic with infinity, it works like that
however, 0*inf and 1^inf usually don't mean arithmetic. they usually mean babby calculus student tried plug and chug and got shit, and now he has to fix it
see >>8024689 for example, talking about convergence when it has nothing to do here
https://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation
https://www.autismspeaks.org/blog/2016/03/25/transcranial-magnetic-stimulation-autism-evidence-benefit
http://www.brainstimjrnl.com/article/S1935-861X%2813%2900299-4/abstract?cc=y=
Could this be the way to cure Autism? Could Transcranial Magnetic Stimulation be the future of Brain health?
>>8020734
We can test it on /pol/ and find out
People who can't empathize give me the creeps.
there's none they don't have, theory of mind
Why are animals so stupid?
https://www.youtube.com/watch?v=GaMylwohL14
millions of years of evolution and they get spooked by mirrors
>>8021255
don't have the processing power to run the latest version sentience.exe
so their self awareness is limited
animals are so dumb
>>8021255
Human like intelligence isn't the end result of natural selection, other animals are just fine doing what they do.
Natural selection equipped humans to understand and comprehend medium objects moving at medium speeds.
Our natural ability is to avoid being eaten by predatory animals on the African plains.
We were not equipped with the ability to understand things like quantum physics and rocket engine design, those things are a fortuitous happenstance of our larger brain and physical attributes that are...
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