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Archived threads in /sci/ - Science & Math - 32. page
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Is math a science?
>>
>>8511478
A formal science, yes

And it can be applied to the physical science as well but it's not part of physical sciences
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>>8511478

It's just a language, like piglatin.
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>>8511478
No.

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You have five seconds to convince me that I should give TWO shits about gourp theory.

You can't even apply it in the real world.
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>>8511425

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>>8511425
https://www.amazon.com/Chemical-Applications-Group-Theory-3rd/dp/0471510947
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>>8511709
tl;dr

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Where is God located /sci/ ?
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>>8511277
We've been over this before, in a galaxy far far away. And why was Prometheus such a shitty film? It had a lot of potential to be good but failed.
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>>8511277
Everywhere.
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The great attractor

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How do you choose a good subject for your PhD /sci/? I'm currently stuck between two options and my PI is supportive of whatever I decide to go with.

Option 1:
>Have an idea that can allow me to achieve what I've wanted to work on for years
>Has potential to be truly groundbreaking
>Very hard research, may take quite a few years with no guarantee of success
>Some essential methodological problems may mean it's impossible

Option...
>>
If you can't figure out how to turn the failures of your research into successes you need to examine what your trying to do in life.
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>>8511238
go with option 2

dont make shit harder on yourself for no reason. you aren't going to revolutionize the field during grad school. just get it done and you can do your dream projects after you graduate and have a nice research career that actually pays
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>>8511259
That is a really good point, but I'm afraid I will eventually lose my motivation if I give up on my dreams now when they may be within my grasp. This PhD thing takes a lot of years.

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If a 0.020M solution exhibits 55%T at some wavelength what will be the % Transmittance for a 0.010M solution of the same substance?
>>
>>8511081
Depends on the transmittance of the solvent, really.
>>
>>8511081
Take a shit in your beaker then take new measures.
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>>8511108
>using a beaker while testing transmittance

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Is this acceptable or is there a better way to solve this?
>>
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>>8511016
Or is this the optimal method?
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>>8511016
I don't have the brain power to do it any differently than this but it might agree with your answer.
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>>8511016
Take ln/e of it. Using log base 3, etc just doesn't happen outside of pre calc

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Is 2 the same thing as the sum 1+1?
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>>8510741
>Is 2 the same thing as the sum 1+1?

yes
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>>8510741
No, 2 is an element of Int, the set of base 10 integers
1+1 is an element of Expr, the set of all expressions

To know more about how these objects are different see Wildberger's videos.
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>>8510962
Er...

1+1=2 thou

Programming is mathematics
>>
>>8510728

Yes, obviously. Did you have a question?
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>>8510733
I did not.
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According to Google this is a real quote. What a completely retarded thing to say.

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>the universe was created 13.8 billion years ago

What was around 13.81 billion years ago /sci/?
>>
>created
checkmate atheists
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>>8510724

Time came into being with the Universe, there was no 13.81 bya.
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>>8510724
If there wasn't a universe, any discussion of time is pointless.

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When did you realize that being infinite means being bordered by nothingness?
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>>8510720

Infinite numbers aren't bordered, that's the point.
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>>8510720
>>
Infinite is also equal to the number of times I fucked your mom OP. Without borders. i.e. she and I are still fucking.

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why dont you ever see x-axis of imaginary plane and y-axis of imaginary plane?

and area of a circle radius i would be

A = pi*i^2 = -pi
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>>8509901

Because it doesn't add any new information that way?

You're just taking R^2 and multiplying by -1. Good job.
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couldnt it explain some negative pi you see in formulas?
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>>8509908
No

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how can the universe be flat if space is 3d?
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>>8509580
Think of a comic book. The book's pages are flat, even if you rip them in half. When you turn the next page, you are essentially determining the time rate of each event. The universe is essentially a different slide each and every time a Planck Length passes (smallest unit of time). If it were curved, the universe would be "curved" inwards as if you were pushing on a trampoline from the bottom. Things would rush faster outwards and would appear as if they were moving faster than the center.
>>
A three dimensional system can only have one axis of rotation this gives it a flat shape
>>
>>8509580

space is 4d

the extra d being time

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Basic Algebra Time

Let's see it /sci/ :^)
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Impossible to solve, proven by Mr Wiles haha :>>>>>)
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>>8508873
>>
No integer solutions, since $x + y + z \equiv x^2 + y^2 + z^2 \mod 2$

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brainlet here

can someone explain to me the difference between voltage and voltage drop, especially within the context of pic related
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>>8512087
Voltage is always in reference to something.

That pic appears to be voltage across a resistor, current thought a resistor, and power lost through a resistor, all with resitance R ohms.
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>>8512087
In more simple terms of>>8512090
Voltage drop is the loss of 'electric pressure' across an element of a circuit.
And Voltage is just the 'pressure' driving the electrons forward.
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>>8512090
Yeah I would say voltage is just voltage, the drop is what is measured across a component or even a long transmission line for example.

Are these creatures conclusive evidence for the theory of evolution (be it natural selection or otherwise)?
>>
Still nobody can explain to me how cuckoo brood parasitism evolved.

Once you have done that then you have proved evolution once and for all
>>
>>8512044
Can they mate with each other?
There is no proof that an offspring could not mate with it's ancestors or "cousins" in fact I can mate with any female human that is not sterile. (We're assuming that the human is not too old or too young for reproduction.)
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>>8512050
How could you not explain it? Mutationsort are the driver of evolution and mutations are random. With that in mind, what is the problem with this form of parasitic relationship ?

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Any of you CS faggots play Screeps?

Is it a good way to teach yourself JS?
>>
>>8511909
kys

JS is for dumb designers and frontend noobs
>>
>>8511909
looks pretty cool OP
JS probably isn't usually agent-orientated, and it might pay to learn/borrow some algorithms from elsewhere
have you learnt much js through it yet?
>>
>>8511909
>CS
>JS

>>>/g/tfo

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>professor asks ridiculously simple question everyone in the class obviously knows
>"what is the antiderivative of x^4?"
>"...and ln 1 is?..."
>"what angle has a tangent of 1?"

Why do students do this?
>>
>anti derivative
>high school calc
>>
apathy or fear
>>
>>8511859
>the antiderivative of x^4
>the
op confirmed for brainlet

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Somebody please explain to me how methylphenidate gets you high.
>>
>>8511562
It boosts levels of dopamine and serotonin in the brain. Plain and simple.
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>>8511571
interesting
what would be reasons it wouldn't work?
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>>8511574

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Why do all calculus professors have such an enormous hard-on for arctan?
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>>8511379
It's got a pretty derivative.
>>
According to my calc 2 professor, it's because all of the other calc professors have an enormous hardon for it. In his words, "you're going to be seeing it a lot, so it's best to get comfortable with it now".
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Because its really useful and yoy use it a lot , like this guy says >>8511395

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>cognitive behavorial therapy

Why is medicine considered a science?
>>
>>8511117
because
1+2+3+4+.... = 1/12
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>>8511117

Hello Varg.

It's considered a science because it uses the scientific method.
>>
>>8511117
Why aren't you a credible source?

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So I was on a lecture the other day and someone talked about properties of cancer cells compared to regular cells. From what I understood, the problem with cancer is that
1. The cells grow in bunches and spread to unwanted places.
2. The cells don't stop splitting, making it harder to destroy them.

So, I had an idea at that time that I wanted to share with you guys:
Is it possible for scientists to biologicaly design cells that use the 2nd cancer property that I listed, but without doing the 1st? Can we make use of this to create limbs and internal organs...
>>
>>8511109
it shows. Use google you mongoloid.
>>
>>8511129
I know google has answers, but I wanted those on this board who study biology to guide me into more specific subjects I should look into
>>
theres a lot of work being done on that OP. google telomerase research. only thing is its damn hard to activate telomerase in non cancerous cells and non gametes.

>when you're stuck on a mathematical proof and you know deep down that this makes you a brainlet but you lie to yourself and say that this doesn't count because of a particular reason
>>
Whats the problem, buddy?

Explaining the problem with your proof will often elucidate what was giving you trouble.
>>
>>8511929
trying to prove b given a -> b and a pretty sure it's impossible i'm going to sue the professor
>>
>>8511929
Trying to prove 1/sec x = sin x cot x
Fuck I'm stuck should I just an hero?

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Can someone guide me on where to start with these kinds of limits ,tried simplifying it and I've got 0 but thats wrong .
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>>8510520
use 'lhopital
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>>8510520
What you did was horrible! You cannot separate fractions like that!

Protip: If it isn't 0 or 1 then you can prove it goes to infinity.
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>>8510531
Ignore that second part, I am retarded.

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Why?
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>>8510487
From a mathematical perspective and assuming an elastic collision, you can write down the equations of conservation of energy and momentum, plug in the speed of the first ball after the collision as zero, and get the result m1=m2.
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>>8510518
>plug in the speed of the first ball after the collision as zero
Right, but why?
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>>8510811
Because conservation of energy and momentum?

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Are all calculus professors bunch of sadists?

My professor just announced that the calc exam next week will have 59 questions and I'm drinking vodka because I can't handle the thought of taking that shit
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>>8510175
I'm in the same boat

My professor announced an upcoming exam 2 days before the exam
>>
>>8510175
>Day 1 of non-honors calculus (my first college class)
>Professor says he's going to review material from high school for the first lecture
>Professor writes down a ton of inequalities I've never seen
>Then he starts going on about measure theory
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>>8510177
Hahaha WTF how is that allowed?

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Is there anything you wish was implemented more in physics simulators?
The problem is that good physicists are rarely good programmers, so there's a gap that's yet to be bridged.

It'd take a lot of physics knowledge to implement memoization as well as Golly cellular automata did for general physics.

I'm an engine programmer, and I'm wondering what magical maths I could be missing out on, memoization does appeal to me a lot since it means linear increases of computing power allow me to do exponential amounts of simulation.
>>
Here's one thing in particular I was wondering: Can I for purposes of efficiency lump an indefinite amount of objects with gravity together as one single gravity emitting object, as long as nothing else is in the bounds of that group of objects?
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>>8510359
>as long as nothing else is in the bounds of that group of objects
What did the cat mean by this?
>>
>>8510379
Like how gravity equations only work for if you're above the surface of the planet, i.e. you have not entered the bounds in which the material resides.

How can a FUCKING PLANET be made up entirely of gas? How can a planet with 11 times the volume of Earth stay as one thing if it is made up entirely of gas? Like what the fuck? Wouldn't the gas just dissipate away to outer space?
>>
Gas particles have a mass. The core (and all the other gases deep down) causes a gravitational pull on the gas thus it cant escape.
>>
Its not made entirely of gas, it has a rocky core.
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I think they call it gravity, or something like that..

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Why can't we construct our powerplants within enormous lead hangers to contain and mitigate the effects of a nuclear meltdown?

Do they HAVE to be exposed to the environment? Can we built them underground so that fallout can't spread?
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>>8508086
>Why can't we construct our powerplants within enormous lead hangers to contain and mitigate the effects of a nuclear meltdown?
We do. They're built out of concrete, but otherwise that's what the containment building is.
>>
>>8508100
So why can't we built the reactor within radio-impervious structures? I dont understand
>>
>>8508201
We do.

>inb4 MRI scans reading brain activity

>>
>>8511428
Yes and more.
>>
>>8511432
>Yes and more.

Hold up buddy. How?
>>
>>8511435
If I knew how then that would mean that I discovered it.

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How can I lead a healthier lifestyle /sci/. Based on my previous eating habits, I may have had some significant exposure to Xenoestrogens and based on some research, they do have unintended effects and are stored within your body fat. Also, I have heard from different sources that bread converts into sugar when metabolized within the digestive tract so that is something as well.

Any help?
>>
>>8511397
Looks like you've been redpilled with broscience. Unfortunately the damage to your brain this has caused is irreversible.
>>
>>8511409
Broscience? Xenoestrogens are real thing you pleb.
>>
>>8511415
yeah, but broscience vastly exaggerates the amount and effect it has

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