Archived threads in /sci/ - Science & Math - 62. page
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Hi /sci/ I don't know if this is the place to post this but im gonna be posting it everywhere because im a poorfag who cant go to the doctor and am in moderate agony right now.
I damaged my thumb somehow around the nail and the whole finger around the joint to the tip is swollen and on fucking fire lol.
I just popped a pill called IP 272 which is supposedly Sulfamethoxazole and trimethoprim ~ anti biotics. What im asking is does anyone know if its safe to be on that and trip on DXM? i havent found anything on google yet that isnt akin to "headache?...
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cut off your thumb and problem solved
>>8152984
You got an infection of some shit. Gotta drain that shit. I would suggest leaches but you prolly don't have any. Poke a hole and let it drain.
Also your nail may fall off but it will grow back in like 6 months.
>>8152984
>can't afford a doctor
>can get ahold of prescription drugs
>more interested in drinking a $15 bottle of cough syrup than possibility of losing your thumb to infection
Impressive priorities, OP.
Can someone redpill me on signal processing?
>>8152775
there's nothing to redpill.
It's just a short name given to frequency domain analysis of time series.
>>8152832
No it isn't. The intent isn't just to restate the time domain; the intents are manifold, from maximizing information exchange, to minimizing energy, to encryption, to statistical analysis, to materials science, to geology...
And wavelets are not frequency any more than a z transform is.
>>8152857
So redpill me faggot,
So I recently watched the homonculus video. Can I get proof or a discussion to work this theory out? Obviously humans and chickens don't have the same amount of chromosomes but neither do tigers and lions
>>8152725
This was not science.
This was sin.
>>8152725
It's fake you fucking idiot.
Can we get a cringe thread going?
Pic related, my old math professor
https://youtu.be/MXiT14b6RVA?t=1m57s
>>8152708
Shameless selfbump
https://www.youtube.com/watch?v=Jp5yblKmQQI
LOOK AT ALL THIS SCIENCE!!! XDD
What could be the benefits of modifying humans to do photosynthesis?
Would it reduce or consumption of traditional food? Prolong our lives?
>>8152526
Modifying humans for photosyntheses would need cells to either be injected with or genetically altered to have chloroplast, which would turn skin green and fucking a green woman is my fetish so thats a plus
>>8152526
Read an analysis on this and it's basically useless. If you lay in the sun all day you could reduce food consumption by like 5% or something
Photosynthesis works because plants stay still and have leaves branched off to efficiently gather light. The best way to make human photosynthesis work would be to emulate this. Do you want to be a tree?
Dark energy is around 70% of the Universe's mass.
Gravity, on the otherhand, is a force, that makes space pull stuff inside itself (not suck it in).
If gravity was endless, then it would be infinity, and nobody likes infinity. So..
Dark gravity.
>>8152523
Not 70% of the Universe's mass.
Melanin is a pigment, that your skin produces. It comes in many colours, which are produced by getting energy from sunlight like plants get energy from sunlight by using chlorophyl.
I would call a melanin person a good person.
>>8152523
I'm also an idiot that believes gravity is a force.
>why don't these faggots perform pseudo-riemannian geometry
i have to advance in probability and i'm stuck in this frustrating question.
one Student is tested in 2 tests,the probability from him to pass the first test is 65%.and the probability for him to pass both tests is 55%,and the probability for him to pass at least one test is 80%.
the part which im having trouble with is that 80% chance ,let A be the probability to pass the first test and let B be the probability to pass the second test, now from what i understood from the given is that
P(A ∩ B')+P(A' ∩ B)=80%.
is that correct?
>>8152423
thank you i thought the same but im still having trouble finishing up my probability table ,if you know what i mean.
>>8152423
Never mind if you don't,but can you give me your way of finding the probability for the student to pass the second test?
>>8152414
That's incorrect. The probability for him to pass at least one test is P(A ∩ B') + P(A' ∩ B) + P(A ∩ B)
P(A ∩ B') + P(A' ∩ B) is the chance of him passing exactly one test.
The rest is simple algebra.
What about her anatomy suggests she was bipedal?
>>8152339
>I don't know jack shit about physiology, anatomy or osteology but for some reason this sounds contrived to me, so instead of finding out on my own if the evidence that backs said assumption is convincing enough, I'll snarkily share my skepticism on a Mongolian stone appreciation board
Give me a fucking break
http://www.pnas.org/content/107/27/12121.long
>>8152466
Well, at least you responded. Thanks. Have a happy Lucy.
>>8152473
Much appreciated, I hope the link is useful.
hey /sci/
I want to stop being useless and contribute to society. Is there any place I can learn math from scratch. I want to do something with my life lol
>>8152317
Khan Academy.
>>8152317
http://4chan-science.wikia.com/wiki/Math_Textbook_Recommendations
http://4chan-science.wikia.com/wiki/Obtaining_textbooks
Why do you want to learn math? There are plenty of other different skills that will give you more job opportunities than self studying math. I would only do it if you find enjoyment in it.
How far is VR going to go? I feel like VR might fail, I just can't see consumers spending money on cheap ridiculous looking headsets that aren't that immersive. I believe full immersion is possible, but we need to make huge advancements in neuroscience before we can even think about creating fully immersive technology.
>>8152234
Also I'd like to add that there are tons of flaws in today's VR. Motion sickness, unresponsive head tracking, and only being able to move your head (with the exception of Vive)
>>8152234
the important things in 2016
I never understood why humans die after facing psychological stress (tragedy, life events) you'd think the whole "good vibes" is a bunch of hokey since the human body is a well oiled machine
The brain is part of the human body.
>>8152090
So you're saying the brain is actively sabotaging the body?
>>8152119
It's more like the brain reacts negatively and in turn the rest of the body reacts negatively
If an overweight person wanted to lose weight, why could that person not just starve i.e not eat for several days and then be back to normal weight and healthy? Why is this not a good option?
>>8152052
I think it's more psychological.
They get so hungry that their mood goes south, they then binge and quit.
You'd probably have to lock someone up to give them an all liquid diet.
Also you need some vitamins and minerals to replace things that arent stored.
>>8152052
>back to normal weight and healthy
normal weight yes
healthy, no.
>>8152052
Ketone bodies are a temporary solution and acidosis will fuck you up
Does anyone here actually know how LIGO experiments work? I have some questions.
There are two detectors separated by over 2000 miles which means that two detectors can detect where the wave is coming from based on the delay.
What I don't understand is how the heck does this difference in time translate into pinpointing where the wave came from. How do they correlate wave to actual black holes? Wouldn't you need at least 3 detectors to do that?
Also, how do they know the masses of two black holes that are colliding? I'd understand if they...
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>>8151943
>Wouldn't you need at least 3 detectors to do that?
No. If you know the signal travels at the speed of light, then a single station detecting a signal is like drawing a circle around the station. A second station draws a circle around this station. These two circles will intersect in at most two places, but one of the places will be ruled out because we'll know which detector got the signal first. Though we don't know the distance to the object which sent the signal,...
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>>8151966
in 3D, it's spheres.
the waveform also contains information (frequency, dampening, amplitude)
>>8151970
Sphericity is irrelevant. You only have two eyes but you can detect the direction of a spherical emission (e.g. the sun).
Is there any way a noob, who hasn't even taken a course in Measure Theory, can learn basic stochastic calculus?
I want to do a little project about it.
mhm.. Re-implement this Python code in your favorite language, then read about Brownian motion and clarify all terms for you that you don't understand
https://en.wikipedia.org/wiki/Euler%E2%80%93Maruyama_method
>>8151888
Yeah, plenty of textbooks that teach it in a non-measure-theoretic manner. You'll just need good knowledge of probability, and skills in calculus.
>>8151906
Interesting, thank you. I already read about the derivation of the stochastic DE:
[eqn] \mathrm{d} X_t = \mu X_t \mathrm{d} t + \sigma X_t \mathrm{d} B_t [/eqn]
I think I can program the thing from the link in MATLAB.
>it's a the proof is left as an exercise to the reader episode
>>8151831
Every time a proof exercise comes out, you can always prove it with the content of the past 3 chapters AT MOST. Usually with just the content if that chapter you will have enough to prove it.
If you stumble upon one of this and cannot prove it then it is a good indicator that the topic of the book is way beyond your intelligence and should drop it for a book of the same topic but aimed at engineers or bio majors.
>>8151831
You're reading a text book, not a reference book. You're supposed to learn, not to just find the solution for something you were looking for.
>>8151866
>and should drop it for a book of the same topic but aimed at engineers or bio majors
books for engineers are way more complete than the others.
