Any one have experience using smelling salts in order to stay awake? I find I'm too tired and can not afford to sleep now-a-days, would these help me stay awake; at least long enough to get my work done?
Are there adverse effects to prolonged use of smelling salts?
are you an 18th century boxer?
>>7671487
Math PhD drowning in papers m8.
>>7671475
>and can not afford to sleep now-a-day
Well then you're going to die quite soon. Humans need sleep. There is no chemical substitute. And if you are sleep deprived than your "work" will suffer more than if you had worked less and slept more.
Is data science a meme degree?
Just double major in cs and stats.
>>7671444
>data scientist
>sexiest job of the 21th century
I don't know where to start
>wearing converse all-stars with a jacket and tie
Also, that term is so broad these days... It's just a buzzword, really. It used to be that they were called statisticians.
Is it possible to catch a bolt of lightning or to physically manipulate electricity through a certain means?
How would one be able to do it with their bare hands?
No.
>>7671419
/thread
>How would one be able to do it with their bare hands?
painfully.
/sci/ this probably isn't the place for homework but I'm not asking for help, I just want to know if this is bullshit or not.
I've redone this problem countless times and always land between 1.2 and 1.4 ohms for resistor 2 and it's wrong every time. Am I wrong or is the website wrong?
>>7671250
baka desu, you aren't solving for ohm it's given
Which equation are you using for power? The most intuitive one is I^2*R, since V for the power equation means voltage across the individual resistor.
>>7671284
OP didn't read the question and anon didn't read the OP. /sci/ is literally the retards leading the blind. Fuck this place.
Alright, /sci/. I'll come clean with you.
I did badly in school. I don't know the reasons that caused it, but I know a lot of reasons that contributed. Most likely cause, though, was I was an idiot who thought I was better than everyone else just because I was in gifted programs and reading way beyond my level.
But in high school, it all fell apart, and my GPA plummeted. Whether I blame the teachers or American education or shoulder the entire blame myself, I know the only person it falls to in order to fix it is me. So, I'm sorry. I swear I'm so, so legitimately sorry I was such a pretentious fuck who thought he could coast his way through life and expect to do all the fantastic things he wanted to do.
But enough about the story, I just want to ask a question. Since I've decided I will absolutely work towards bettering myself in mathematics and science, all I need to know now is where to start.
Let's assume I was just plain not paying attention since freshman year in high school and go from there. What do I need to learn to get to the college level of mathematics? Math has always struck me as something that branches into and loops out of its own branches dozens of times over - certain things need to be known before you can do anything useful. Where do I begin?
TL;DR: Fucked around too much. I'm sorry. Please tell me where I should start to get good at math.
>>7671063
You made alot of threads about this today.
You think math will help you find a job that pays well. You think that going to college for it will land you a job automatically. In reality no. You'll never make it without a deep interest in math.
Take up a job and if you like math, study using the internet. What will separate you from the rest is ideas of applications. Like the inventor of a TV sale item. He needed to just make measurements using math for his prototype and then put it to use.
>>7671063
You should start by reading the sticky you filthy fucking weaab.
4chan-science.wikia.com/
Sage, reported, called hiro.
>>7671073
First thread, actually, but it does seem to be going around a lot.
I don't know exactly what job I want to do. Payment's not so much a concern for me - it's just that everything I'm passionate about requires a lot of math to really get good with. Robotics and space travel, mostly.
>>7671076
Er, thanks. I'll take a look.
Retard here. Can time exist without at least two physical things, at least one of which being in motion? Is it possible to tell time if there is no motion?
Time Is Just An Illusion
>>7671038
That's what I've been thinking about. Is time just our way of telling one thing's position in relation to something else, and not something that actually exists on its own?
>>7666334
Yes. Humans can only perceive time linearly, which is where your notion is coming from.
Let's test your math /sci/
92
>>7670963
nope
It's probably a known one but I've worked out this limit for pi considering a infinite sided regular n-gon is a circle.
My question is is there actually a way to evaluate this infinity x 0 limit?
>>7670927
I believe your limit is incorrect.
cos is between 0 and 1, so the (1- cos) factor must be either 0 or positive. If it is 0, the limit shows that pi = 0, an obvious falsehood. If (1 - cos) is positive, the limit shows that pi = infinity * (positive) = infinity, which is also obviously wrong.
>>7670932
I assume you have never taken a calculus course
lim of 0 * infinity can be finite
>>7670932
there is an n as a factor of (1-cos)
OP:
your x is wrong, you have x=2sin(alpha) or x=sqrt(2-2cos^2(alpha)).
Secondly, you need to show that the perimeter of the polygon converges towards the perimeter of a circle, which is not obvious, and in fact wrong (see fractals for example)
You can, however, use the same idea with surfaces (you can easily show convergence with the squeeze theorem).
What's a Banach Space? How do I begin understanding Banach Spaces?
>>7670953
Yeah that was my old thread but not a single serious response only le memeshit
https://www.youtube.com/watch?v=n12bfWTw9Hk
A Banach space is a normed vector space V (ask if you don't know what it is) that is complete (ie. such that every Cauchy sequence in V is convergent).
Banach spaces are interesting because we have a number of very powerful results allowing us to prove the continuity of linear maps without much effort (Banach-Steinhaus, open mapping theorem, Hahn-Banach)
EE student in fourth semester here
I have good grades but no fucking idea what Im doing
will my future work colleges figure out?
>>7670906
rest calm OP, they all feel the same way.
Electromagnetism, how do they work?
>>7670972
This has been the single biggest thing inhibiting me learning about much of anything.
It doesn't matter how it's explained. It doesn't matter what I read. There's just something that doesn't quite click, because I feel like something important is missing. I've developed a very bad habit of obsessing over what makes the most base layers of the universe tick, and losing sight of how easy it is to figure out how something behaves on a higher level if you just look at it.
I'm too afraid of being wrong. So I don't even try to work from the top down, and it's hard to unlearn.
Can someone explain this logic to me?
1)
Me: I have a bacterial infection. I'm a tad worried about using antibiotics as I've had gastrointestinal issues in the past and I don't want to kill off beneficial gut bacteria.
Doctor: That seems reasonable. Let's consider your options.
2)
Me: I have a cold and I need cold medicine. I'm not really in pain (and my family has a history of liver problems) so I would prefer a formula that doesn't contain acetominphen (the leading cause of liver failure in the Western word).
Doc: Okay, let's find you a medicine that doesn't contain acetaminophen.
3)
Me: I'm experiencing symptoms of severe inflammation. I think I need an NSAID but I'm concerned about ulcers and increasing my risk of heart attack or stroke. Are there other options?
Doc: Why yes, let me explain them to you.
4)
Me: I know vaccines can be very helpful, but I have concerns that the type and quantity of vaccines I receive may adversely affect my immune system. My family does have a history of autoimmune disorders. Also, I've read studies that demonstrate some of the adjuvants can be harmful. What can you tell me about my concerns?
Doc: Fucking anti-vaxxer! Get out of here!!
So you are allowed to have concerns with any drug you put in your body, but if you have even one reservations about vaccines, you instantly become anti-science and an anti-vaxxer? Why is that? Group think? Propaganda campaigns by big pharma? What?
>>7670738
It isn't pharmacies driving this (they don't make much money on vaccines), but rather governments are pushing this. There are well known side effects on vaccines, but the government has decided to accept those consequences for the benefit those vacancies bring to society. The other stuff is ok for you to object as you will only harm yourself. The other stuff will harm others and create bigger problems.
Well if you have read studies than you should know which adjuvants are harmful and which are not. 'some' is not an answer.
since what you are getting from a doctor are not 'some' adjuvants. maybe he knows whats in the little flasks, maybe he doesnt. many just do their job.
because for the 'some' adjuvants that do help protect from a distructive sickness it is worth risking autoimmune disorders imho.
I can however not name the degree of severity in which the prevented sickness has to surpass an autoimmune disorder, for my claim to be justified.
Just know that it's better to have dead killers inside of you the first time, then living ones.
>>7670747
Side effects: these are from a cut sheet on the MMR vaccine.
Are there any known substances that remove or suppress emotions, specifically empathy?
>>7670734
Amphetamines perhaps.
Your looking for something which silences the amygdala. Cocaine seems to do it for me and most stims do it somewhat, FAAH inhibitors were tested on mice, but are pretty gay for people. Androgens also work in mysterious ways and make some people more psychopathic.
TLDR cardiac arrest
Lenardo
There is any record of a great engineer or scientist who wasn't a bright student or struggled through college? Also, what's the consensus on IQ and genius? Thanks /sci/
No, you're fucked.
>>7670726
Consensus is that youre a shitposter
Brian Cox was a high school math failure.
Is this used in applied sciences? if not, why?
>>7670583
Is that Conway´s game of life?
>>7670583
no use case to practically apply to
>>7670591
yes it is
Can someone explain why gamma radiation is ionizing but neutron radiation is not (or is called indirectly ionizing)?
Various books and sources explain that the particle hitting the atom must bear charge in order to ionize it.
Yet gamma rays don't bear charge.
Then I read this
>Even though they bear no charge, gamma rays are able to produce ionization as they pass through matter. (http://www.chem.wisc.edu/deptfiles/genchem/sstutorial/Text4/Tx45/tx45.html)
But Wikipedia states that sometimes neutrons are more penetrating than gamma radiation.
Why can't a high energy neutron excite an electron, but a gamma ray can?
I'm confused.
Pic unrelated.
I'm going to guess that neutrons with high energy arent going fast enough to effect the energy of electrons, but because they are so much heavier they penetrate and still can have more energy than electrons
It needs one charge or another to take part in the atom dance otherwise it just drops 420 blaze it
>>7670533
More penetrating = less ionising bruh
Because λ=h/p, and neutrons are so massive, p is large and λ is small. Less chance for collision. This doesnt feel very legit someone correct if I'm wrong.
>>7670541
What the shit are you even talking about. If they have high energy they're fast u dipshit thats like the meaning of being fast
![arthurcclarke[1].jpg](https://i.imgur.com/pzeUjAJ.jpg "arthurcclarke[1]")
