Archived threads in /sci/ - Science & Math - 400. page
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Guys, I am already failing Calc 2 and I am only 3 weeks into the spring semester. I hate it so far. What is the point of it? Calc 1 was very useful since it taught me how to deal with the tangent and area problems. Calc 2 seems to be more of the same but with harder problems. I don't think I'll ever remember "Integration by parts" or "trig substitution". I will forget this bullshit after this semester ends. If I fail this class I will never get hired at a large company or be accepted into a real college. Is it too late to change my major from Computer...
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>>7804506
here's your (You)
>>7804506
without calc2 you can't even solve a simple problem like http://www.motleytech.net/en/2015/03/20/falling-into-the-sun/ with analysis alone, and would have to resort to using other equations (which were derived from calc 2, by the way)
>>7804506
Integration by parts is the product rule of derivatives done in reverse. Trig substitution is tough, but you learn the patterns if you do some integrals.
The point of calc 2 is to prepare you for integrals in calc 3. You'll be using the same techniques, but it will be with more dimensions. This doesn't make it harder; it's only really a couple more layers and it does make it more useful. When you learn integrals in calc 3, you can add up surface areas,or figure out force applied to something that's...
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Could we one day live over 200 years old? Maybe even over 1000?
>>7803333
We would have to first cure cancer, as cancer consumes everything eventually, then work on keeping cells young and fresh.
>>7803333
Sure.
Life expectancy increases with 1 - 2 months per year. Reaching 100 is quite feasible these days. So you only need 600 - 1200 years of progress..
The rate if increase is itself expected to increase and when we reach 1 year per year we have reached what is called "actuarial escape velocity". I'll let you do the calculations.
Coud someone get ahold of 30000 m^3 of helium? how? and how could it be sealed
>>7803064
i wonder what the equation of that graoh is
>>7803100
Don't wonder. Go get your PhD in Duck v. Rabbit modeling, and figure it out.
Why weren't you the next Einstein /sci/
>>7804348
There is something evil in her face. I think it's the combination of eyes, eyebrows and mouth. Something about her physiognomy tells me she's a psychopath.
Because I'm stupid, why else?
>>7804348
b/c the media doesn't understand that doing minor work in some niche QG field isn't the same thing as creating GR
Okay guys, I seriously fucked up today. Earlier this afternoon, there was a small "incident" in my meeting with my supervising professor (I am a graduate student) and I just got an e-mail from him saying that he wasn't going to have the funding he thought he was and that I should probably look for another research team. I think that it's because of this incident but it's embarrassing so I don't want to confront him about it just in case nothing actually happened and he is just legitimately out of funds. But it's weird that it would be so sudden...
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>>7798975
What was the incident?
>>7798985
I didn't really want to say but I guess I have to specify. I don't think that it was that big of a deal and he might not have noticed.
So when I go to campus I close out my laptop and disconnect it from my charger and put it in my backpack. I'll do a quick glance to make sure there is no porn so I don't open it in a public place and somebody sees me watching porn. This morning I made sure there was no porn and then left for campus.
The meetings are just me and him in his office....
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>>7799009
lmao you're fucked
>an electron has never been observed.
>you believe in it anyway.
Wow, you guys are worse than young earth creationists.
>>7795092
>how do computers work
>what are electron microscopes
>what is electricity
>how do old rectifiers work
>what is an electron gun
>what is thermoionic emission
>>an electron has never been observed.
>what are solvated electrons
>>7795107
cont.
>how do chemical reactions occur
>how does a capacitor work
>what creates electromagnetic waves
>how are x-rays generated
>why does phosphorus on old tvs glow
>how does a magnetron work
>what is a coulomb explosion
>how do lasers work
>how...
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>>7795107
All good questions about phenomenon in the natural world. I assume you have a hypothesis that some magical little "electron" particle is behind it all? Why don't you go observe an electron and validate your hypothesis.
There simply is no greater pursuit for humanity.
Does SpaceX have the engineering capability to pull this off?
>>7792102
In my humble opinion no they do not. We haven't even landed anything on there yet
>>7792247
You trolling breh?
>>7792102
>There simply is no greater pursuit for humanity.
Nah, it's not a "great pursuit," its a necessity.
existing on multiple planets is crucial to the species' survival
>derivative of a function that includes the transcendental number pi
>nothing happens, it is just a constant like any other.
>derivative of a function with the transcendental number e
>out of nowhere you have to learn new fucking rules even though e is just another constant and pi doesn't have special rules.
You people want me to swallow this bullshit? Come on. At least accept calculus is made up.
>>7806861
>Australian shitposting leaking fro /int/ and /pol/
Neomoot should just fucking rangeban you all.
Retard here.
Why is [math]H_{3}O^{+} + HO^{-} \rightarrow 2H_{2}O[/math] and not [math]H_{4}O_{2}[/math]?
Bcus energy and entropy and shit.
Basically it's not a stable molecule.
>>7806781
Thermodynamics basically says what atoms click together easiest. Just because the numbers of atoms add up, doesn't mean it's a low/stable energy state.
<Stochastic analysis thread>
Question:
Is convergence in probability
[math] { plim }_{ n \to \infty } X_n = X [/math]
formally given by
[math] \forall( \varepsilon > 0).\ \lim_{n \to \infty } Pr \left (d(X_n, X) \geq \varepsilon \right) = 0 [/math]
?
And does anyone know Hairers work? I only read one of his paper last year when he got the price, and I get the gist of it - he does a sort of Tailor expansions for super non-smooth objects.
Anyone here working with that?
Yes.
No.
>>7806748
Why do you post a first year undergrad definition and then a research question? Are you trying to bait?
And so, /sci/, I have an assignment about grafting(organs, not plants...) and I was wandering, may your kindnesses show me some nice articles(not wikipedia, something more into it...) or even post on here a little about this subject?
I wonder if you could graft a bunch of hearts and lungs into one man do you think if you could he would have super endurance and could run forever as a result of all of his hearts and alll of his lungs????
>>7806694
scholar.google.com
Why are physicists so completely fucking clueless about the vacuum catastrophe that it barely has a half a page dedicated to it on wikipedia?
Also general "how to harness vacuum energy for FTL travel" thread.
>>7806688
>>7806690
why do pseudoscience topics get more coverage than the vacuum catastrophe.
>>7806688
>the vacuum catastrophe
... is merely a mismatch between the Mathematical theory and the observed data, nothing to get one's pantiiz in a bunch.
Can someone explain the bit about nomenclature?
>Listen, either Pluto is not a planet, or a ton of other Kuiper Belt objects are planets.
>But, did they really have to call something that wasn't a Dwarf or a Planet a Dwarf Planet?
Kuiper Belt planets and Oort Cloud planets.
>>7806689
This image is flawed, Niburu isn't on it.
mercury and blood reaction?
does it do anything? cold mercury and hot blood?
the video doesnt exist on youtube.
does anyone have a basic lab setup they can film this?
i also would really love to see the mercury/sodium fluoride reaction (toothpaste) and mercury/sodium aluminum (deoderant)
blow stuff up. havok. revolution. sounds fun.
>>7806595
oops i meant mercury/toothpaste and mercury/deoderant *reactions*
>>7806603
are you ready for this?
they put the guy in charge of Windows Vista in charge of Vaccines
What can I do with a degree in Biology? Which are the most exciting areas?
are you studying biology in uni or are you in high school?
either way it depends on which field you specialise into, i think the "hottest" now is bioinformatics/biotech
Concentrate on transferable skills. What's hot today may be old hat in five years time. A lot of gene jockeys got burned way back.
>>7806458
http://www.bls.gov/ooh/life-physical-and-social-science/home.htm
The US BLS has a fairly comprehensive list of all the occupations available. See which jobs you can apply your degree to.
