Archived threads in /sci/ - Science & Math - 233. page
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What is the best way for a noob to learn precalculus?
>>7983582
youtube
khan academy
opening a book
>>7983609
/thread
>>7983609
How does opening a book teach you precalculus? I've opened books in kindergarten but I didn't learn anything.
Out of curiousity, how does the naming scheme for medicines? Sorry if this is the wrong place for this question, but I'm writing a story in a near future where a new ADHD medicine is developed that causes a drastic increase in the creativity of the person taking it.
I don't know much about neurochemistry or pharmaceutical manufacturing but I assume that this hypothetical medicine would be in the amphetamine family but I'm not sure if it would have some sort of prefix in the clinical name (dextroamphetamine etc).
tl;dr: How could a drug that boosts...
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>>7983439
Brainicillin.
It's random
>>7983440
That would be an antibiotic wouldn't it?
>>7983439
The people who discover it come up with a name for the base structure that's significantly shorter than the IUPAC name. Everyone knows that that structure refers to the substance of that IUPAC name. Prefixes are added to indicate modifications to that structure.
Since you mentioned amphetamine, amphetamine's chemical name is 1-Phenyl-2-propanamine. Methylated, it is (2S)-N-Methyl-1-phenyl-2-propanamine. Scientists know amphetamine refers to the first, so you stick a "meth" before it to indicate...
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https://www.youtube.com/watch?v=S5ep2vUMJt0
Fuck my ass.
>watch video
>want to see more from this guy
>click on his channel
>first thing I see "Why 'Feminism' is poisoning Atheism"
>It's a 7 video series
>>7983384
This guy is to /sci/ what Stallman is to /g/
He has a PhD in chemistry and absolutely HATES feminism and popsci
Why study mathematics or physics at university when you can study engineering and get a job? Then you can study maths and physics in your own time to your hearts content.
t.this is what I'm doing.
>>7983284
Because for some people:
Chance to do physics research > Engineering jobs
"can" is relative.
The fact that so view (I can only think of Heaviside) do it makes me thing it's not really a path you are eventually willing to go.
If people start working, get families etc., they are lost w.r.t. doing something relevant.
And I don't personally know any engineer who's good at math
Because NEET is a valid lifestyle
>never excercise, ever
>have really intense wank
>heart stops for a noticeable time before re-starting
>also have borderline Marfans syndrome
Am.. am I going to die bros?
>>7983278
you should probably go to a doctor and ask them.
Also you should probably ask that doctor about working out regularly so you don't die.
Its not that hard to figure out.
Yes. But don't feel bad about it, even /fit/ people will die eventually.
>>7983279
I second this.
Also learn to play the violin. You have an unfair advantage. See Paganini.
With ordinary fitness, ordinary lifestyle and lots of humour you should have good odds of reaching 80. The only common factor they have found for the very oldest people is a strong sense of humour.
Need help with this math question, I understand what to do but not how to do it. Could you show me the steps?
y = 2x^3 - 9x^2 + 12x is drawn, calculate the area within the dotted region.
I know I need to intergrate it from 0 to 2, but how?
Look at the primitive of ax^b and do it three times.
>>7983272
monte carlo method
>>7983272
Is this a troll thread, or is /sci/ now /highschoolhomework/?
Where can I purchase a small sphere of aerogel like pic related? Carbon or Silica is fine.
Also, I'm curious about its properties irl, since I've never handled it and I would like to keep it and handle it frequently.
>How cleanable is it?
>How elastic/firm is it? I've read that carbon is pretty elastic. What about silica?
>How light is silica aerogel? Apparently carbon is insanely light and won't deform flowers it sits on, but I can't find images of...
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>>7983095
You can buy plates of it, but a sphere is not something that they would make since it makes no useful sense.
>>7983111
What good are little cylinders? They're basically all just curiosities and specimens for ogling.
>>7983111
Also, I got this image from someone that was selling them on Amazon, but is out of them. So someone made some.
Usually Penicillium molds are used to preserve meats like salami.
I'm wondering if I can use Psilocybin mold instead.
I've got no idea if the actual penicillin content of the mold plays a part in preserving the meats from bacteria...
And I think it would be kinda cool to grow magic mushrooms on salami before you eat the meat.
What's /sci/s advice?
>>7983070
enjoy your food poisoning. It will probably not work because psilocybin is very fragile and will die on almost all encounters with other funghi or other micro organisms. So I don't see this working. It's probably easier to just slice up your shrooms mix them through the meat then dry conventionally and eat it.
>>7983086
:(
Well that just ruins a food fantasy.
If you didn't know, until a certain age, the mycelium of psilocybin can be out grown and killed by other organisms, even bacteria. As well, if the medium its grown on is too dense, it will never grow to bloom mushrooms, so it will produce very minimal psylocibin.
WTF? Are they expecting me to know the molar mass of carbon dioxide off the top of my head?
the ideal gas law is PV = nRT, with n being the number of moles. How am I supposed to know what n is without memorising the molar mass of carbon dioxide?
>>7982949
carbon and oxygen masses are two of the easiest to remember and also two of the most commonly used
they're 12 and 16 and im not even a fucking chem student
>>/wsr/
>>7982955
I'm a physics student, so I didn't think I needed to know this shit.
What else do I need to memorise from the periodic table?
>>7982959
i dont know, im not in your physics class
Scientifically speaking, which animal is more intelligent, a bear or a gorilla?
I would say bears.
http://blogs.scientificamerican.com/thoughtful-animal/the-average-bear-is-smarter-than-you-thought/
>>7982705
Fuck off back to /pol/.
>>7982706
What?
>>7982706
Found the gorilla.
Is it possible to turn your life around after a bad Undergrad?
It would be extremely stressful
>>7982638
For you
>>7982636
Nope. It's over. As /sci/ will tell you, if you didn't complete your undergrad with perfect grades at age 13, it's over.
I've been looking at this function
[math]f(x)=x^x[/math]
and I cannot obtain its derivative.
I have tried re-writing it as
[math]f(x)=(e^x)^{ \ln x}[/math]
but that doesn't seem to help.
wat do
It looks to me like you would get it from u-sub.
I'm sure someone on google has gone through the steps though.
>>7982335
This """"""""Function"""""""" may help you
>>7982335
I didn't get to logarithm's and exponent's in Calculus that's my next unit after tomorrows test.
Can you please show me why y = sin(kx) has the derivative of y'= k*cos(kx)
So, I'm in the uni and this engineer is my teacher.
>"And you can see that the Karnaugh map is a sphere"
>"Professor, I think you mean't a torus, not a sphere"
>"It's a sphere"
Why they're allowed to step into academic ground after they conclude their glorified technician courses?
>>7982127
>Professor makes mistake
>Doesn't wanna listen to a Freshman shitter
>Doesn't deserve to be in academia
>>7982127
Bro when applied from every angle it's a sphere.
If you want to get technical it's a sphere within a sphere with an infinite potential matrix sequence between them
Profs have studied this shiz way more than you you're bringing your ignorance to class for a reason
>>7982137
>>7982132
sure
Is it possible to have a species that is global to not have a sub-species?
What a boring question
What an interesting question
>>7982123
Sub-species is a meme anyway, it doesnt mean anything specific
Is there a way to rapidly change the electrical conductivity of a sheet of material? Is something like this possible or does it exist?
>>7982005
electrical characteristics of different materials change with temperature
but this usually isn't practical
what are you trying to do?
>>7982017
I want to change the electrical conductivity of part of a reflector for an antenna, but I don't think it's possible.
>>7982005
changes in pressure or temperature. this is actually the basis for most electrical sensors.
