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File: gay pride pizza.jpg (54 KB, 1280x960)
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What color is the universe?
4 replies and 2 images omitted. Click here to view.
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>>9368769
I bet some /pol/acks got some CRAZY conspiracies about blue and teal, the universe, and it's prevalence in entertainment right after y2k supposedly didn't happen
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>>9368753
What you're asking the color of CMBR not "the universe." The actual fabric of space... We dunno. But there will be better guesses when some old fart publishes a unified field theory
>>
My uneducated assumption is that the fabric of the universe, or the building blocks of it, are too small to have color.
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>>9368753
https://en.wikipedia.org/wiki/Cosmic_latte
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>>9368753
Tarantula

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I'm sure many of you spend a lot of time studying and writing. I'm really picky with the utensils I use and want to know your favorite pens for specifically math questions and what not. I don't really like to use pencils for some reason.
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>>9368344
perfect for poopers
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>>9366512
iPad + iPencil + notability
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>>9368209
>>9368218
of course not im not retarded, i just googled the pen's name i cba to take pictures of it.
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>>9368344
Seconding, nothing beats a felt-tip.
>>
Lamy Safari filled with Noodler's Black on a good notebook. Extra fine nib if you're a mathlet, otherwise 1.1 italic nib.

Kuru Toga pencil for exams.

For anything that someone else is going to look at, use latex.

If you're a poorfag, use a staeadlter lead holder for everything.

So, okay, classic story here. Everybody pampers you and tells you how smart you are, school is easy as hell so you barely try and still ace, and so you think you're a hotshot. I'm pretty sure everybody on /sci/ was like that. But then you get into Uni and suddenly the workload is too much, you don't know how things work, you have never really sat down to study (and I mean really study) so you let days pass by and you fuck up your semesters.

Is there coming back from this? Currently in my 3rd Semester, and I've got:

>Programming I: 6,5/10
>Programming II: 5,5/10
To my defense I had never touched a Language and we had to learn both Fortran & C++ plus a bit of C, so... I'm not making excuses, since I only did the required program per week and didn't work on it anymore, but...

>Physics I: 7/10
>Physics II: 7/10
I fucked up one exercise in I, which cost 3 points, and dunno about II. Apart from one Proof that cost 0.5/10, all else ranged from absolutely correct to "might have a problem on the numbers". I mean, I checked later with the Prof on the way I tackled them, and they were correct. I guess that Proof, plus another where I forgot to write down the diagram and any math issues cost me those 3 points.

>Physics Lab I: 10/10
>Physics Lab II: 8/10
Okay, this is 100% not my fault. We were put into random teams of 3, and I got stuck with two braindead cunts who left an hour early everytime, moved as slow as tortoises (we are required to use a scientific calculator to go through multiple computations quickly, but they took them one at a time), didn't know the theory of each exercise and even got barely passing marks in each week's papers. Seeing as we're graded on a group effort, I got saddled with their fucking mistakes.
>>
>>9369036
>Mathematical Analysis: 8/10
>Chemistry I: 5/10
Okay, now I know for a fact Chem is bullshit. I aced that shit, as it was merely High School revisions. Bitch isn't even from the Physics division. She works in the Chemistry Division and her class was added a few years ago to give her extra classes. She's known for cooking-up grades.

And apart from the coming stuff, I have the ones I didn't pass:

>Linear Algebra & Analytical Geometry: 2/10
I read the book the night before going, and strangely I scored a 2/10. I didn't know you could skip exams really, that's why I went.

>Differential Equations
>Vector Analysis
Didn't show up on these.

And I've got these coming up on January:

>Physics III/Electromagnetism
>Electronics
>Probabillities
>Lab III (no exam here, but I think my team was better this time around)

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>>9369038
Okay, I know I'll fuck up this time as well, but I have to ask... If I manage to back up and work, can I still make it? Or will these first few 5s & 7s really drag me down forever? I can't score a perfect 10 on my Degree, but maybe an 8 or something? Is it still doable? I know I'm not hot-shit, but if I stop wandering around can I do it? I'm even cleaning my PC of distractions.

It's just that I never learned how to study you know? I even laughed at the ones that did. The idea of not stopping at 21:00 to watch your show and relax until 00:00 was bonkers to me. Studying during summer? Pffft, get real. But, it seems those folks had a schedule and learned how to operate, while I was fucking myself over.

This is not a humble-brag blogpost, really. I know I'm no Von Newman. Guy was speaking Ancient Greek as a baby, and all I've got from that period was forming coherent sentences at 11 months and never counting with fingers. Which is ironic, since I haven't done mental math in years and I've lost my edge...

Either way, any tip is appreciated. And please don't move this to the shithole that is /adv/. For some weird reason I can't even post a comment there (Connection Error always pops up). Or maybe even some encouraging words, really.
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>>9369047
To just give you a general idea of my program so far, I wake up at 09:00, shitpost until 14:00, "relax" until 17:00, shitpost and watch shows until 22:00 and go to bed at 04:00... So, uh, yeah, I'm pretty deep...

I have started cleaning the PC though, I shipped collectibles and others back home and I've started waking up at 07:45 (hoping to get to 07:00) so... Is there any hope? Any schedules to recommend?
>>
Its all habit, just start studying and itll get easier. Or dont, i didnt study through college and justread unrelated (to class) articles and still do to accumulate knowledge. Fuck the curriculum. Your choice, i recommend the first one.
>>
Take a break from uni. Buy a bunch of textbooks about the stuff you want to learn, and go through them in your own time. When you're finished, that's when you go to uni to ace everything.

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i can't read on the bus because of nausea, do you have any recommendations what i could listen to to learn physics? youtube with only audio just doesn't do it for me.
I'm just finishing my bachelors degree so just give me whatever. math too

thanks guys
>>
binaural beats
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>>9367534
>binaural beats
that doesn't teach me anything does it?
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>>9367532
F
E
Y
M
A
N
N
>>
>>9367532
listen to some sick beaties my man

helps you learn

https://www.youtube.com/watch?v=6v47stbJSwA

only brainlets listen to rock bee tee dubs
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>>9368982
I dont want to listen to music i want to study.
I watched some feynman lectures but are the visuals really not needed?
Or are there any audio only lectures?
Thanks for your answers

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is a human's brain still able to function normally albeit slowly when in an area of space where time is slowed down or does the slow speed of time interfere with normal neuron operation?
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frame of reference
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>>9367580
I assume you're talking about Relativistic effects of motion and gravity.
There is NO WAY to detect that's happening to you unless you look out the window and compare your situation to others.
You feel no different.
You ARE no different.
If there was any way imaginable to know something had happened to you, you'd have a means of determining which state of motion was "absolute rest".
And that's precisely what Einstein said you can't do.
>>
>>9367580
OP, don't listen to those other posters, they're offering you fake science. I have a double PhD in Physics/Neurology, and I promise you that while general relativity does affect the way your brain behaves in space-time, the effects are not stereotypically relativistic. For example: I'm sure you've noticed that some days you can't seem to think straight.That's because space-time is curved - more so some days than others (because the earth travels through continua of varying gravitational density), and yes, that affects your cognitive processes. Likewise, if time slows down, so do your neurons, especially at the synaptic level. Temperature can also be a factor. At 32F (0C) your cognitive processes slow down, and at absolute zero turn to metaphoric ice. So in answer to your question, no, your brain speeds up and slows down depending on your frame of reference. The same is true of IQ, which rises and falls regularly in concert with the strength of lunar tidal forces.
>>
>>9367644
I assume the lunar tidal forces were particularly weak when you wrote this.

Seriously, what pleasure do you get out of BSing someone who seems sincere about trying to understand something?
You're not unique. Quite a few mischief making responders on /sci/
Quite a few trolling questioners here too, of course. (I could be wrong about that. Maybe they DO believe the Earth is flat.)

>>9367580 (OP)
If your really want to know something, /sci/ probably isn't the best place to ask. You may be helped but be aware of all the bullshitters and be skeptical.

File: 1509861306595.jpg (26 KB, 273x302)
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The fact that, sooner or later you'll be gone and, no matter your achievements, they'll be but a tiny pebble. We won't get to explore the universe, see colonization become more than a meme or see the rise of AI. We're just stuck here, imagining fantastic things but not being able to ever do them.

How do you keep going, despite all that? Is Augemented Immortality close enough so that we'll get to live to see such things?

I mean, I'm studying my Physics at Uni and all, but this has gotten me down the last few weeks. What's the point of it all if you won't live to see Star Trek:TOS? Why study day and night if all your legacy, at best, will be a bunch of equations that maybe, two centuries from now we'll be used by someone to actually traverse the Universe? Should we just shift to bioengineering, figure out life-extending augs and THEN, after having solved the lifespan issue, deal with the more... "fantastic" aspects of science?
33 replies and 9 images omitted. Click here to view.
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>>9366482
be more close-minded, think about life in the short-range if you know what I mean
not really good advice but it'll solve your problem, plus it's easier to do
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>>9366482
>How do you deal with it?

You don't deal with it, "it" deals with you. Alternatively, get a deck of cards THEN deal with it... Etc.
The lifters of old lifted so that you may lift, you may lift so that the lifters of new may lift.
If all lift well, and all that it amounts to is a tiny pebble, perhaps that tiny pebble will become omnipotent and/or an omnipotence paradox and/or an actually omnipotent paradox.
That is (relatively basically) excluding the lowerers/droppers of old/now/new.
In regards to "low hanging fruit" the past supplies the present, the present supplies the future, but sometimes the past supplies the future and not the present. Sometimes the future supplies the past and not the present, and sometimes either and/or both of the past and future supplies the present. It begins to become quite interesting when the "present" supplies both the past and the future.
Good "luck"... Etc.
>>
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>>9368762

Epic praise kek roflmao
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>>9366482
And how is your situation any different (or worse) than anyone else's in the past few millennia?
Think of all the people who've lived and died before they stood a reasonable chance of having enough to eat, before antibiotics, before airplanes, before anesthetics, before refrigeration, before you had a decent shot at living past 40.

Think of Willy Ley. He was a member of the German Rocket Society, saw Hitler coming to power and got out, fled to America. He spent his entire life promoting rocketry, advocating for space flight.
He died of a heart attack ONE MONTH before Apollo 11 landed on the Moon.

EVERY generation is in your situation. I suppose Capt. Kirk spent his off-duty hours bitching that Replicators and Holodecks hadn't been invented yet and he might not live to see them.

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You should be able to solve this
50 replies and 10 images omitted. Click here to view.
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>>9368947
How can you cut a board into 1 piece exactly? At which points do I apply pressure so as to break a pencil into a single piece?
>>
10 Minutes for 3 pieces. Saws are usually pretty flexible, so Marie bends it in such a way that she can saw the board into exactly 3 pieces.
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>>9369051
Someone draw this
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>>9369045
Apply force to a point -1cm along the pencil with your finger to snap into one piece.
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>>9369008
are you retarded? you can just scratch the board with the saw to "knock off atoms"

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http://faculty.etsu.edu/knisleyj/calculus/final.pdf

Written by a guy who thought the way calculus needed a serious overhaul. After writing and using this textbook, Knisley reported a dramatic improvement in the grades of students taking calculus-related courses after adopting this book. It has computer algebra exercises and it's also free.

Is this a worthwhile textbook to use if you want something better than Stewart but doesn't focus on proofs?
21 replies omitted. Click here to view.
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Looks kinda boring.

Could use more colors/better font

I don't know how people expect to teach calculus when they're using a boring ass format.
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>>9368267
check out whatever the ocw.mit.edu 18.01sc course uses
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bump
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>>9368760
what more do you want?
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>>9368286
>Calculus
>Boring
Nice bait Oldfriend

PDE's

Does anyone now what is going on in the particulate solution section of this problem ?
[Part circled in red]
2 replies and 2 images omitted. Click here to view.
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>>9368487
Those are just equalities and inequalities, there's no "problem" at all.
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>>9368492
They are BVP's
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>>9368487

The thing about PDEs is that at that level, it's really easy and mechanical to explain but I'm far too lazy to type it. Just try an eigenfunction expansion.
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>>9368487
>Does anyone now what is going on in...
Short answer is no, because your handwriting and lighting are horrid
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>>9368891
>>9368848
>>9368568
Take into account all of these before you post next time plz

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Yesterday I saw this practice problem (pic related) in the College Level Exam Program (CLEP) preparation manual that I couldn't solve.
Wat do?
8 replies omitted. Click here to view.
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>>9367818

Imagine the top row being the "first" row. You know that each row beneath always has +2 bricks compared to the one above. Based on that you can come up with the formula 3+(n-1)*2, which tells you how many bricks the n:th row has.

Now because the "last" row has 49 bricks, you just solve the above formula for 49 "3+(n-1)*2 = 49" and you get n = 24.
>>
simple arithmetic series
a1 = 3
an = 49
r = 2 => n = 24
n(a1 + an) / 2 = 624
>>
File: brickd.png (45 KB, 246x644)
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624 confirmed
column A = bricks in row
column B = cumulative bricks
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>>9367829
wtf are you retarded? why do you think dividing by two will "get rid" of the even numbers in a sum?
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>>9367750
(n - 2*b) + (n - 2*b) + (n - 2*b) ... where n = 49 and b >= 0, increasing by 1, up until n - 2*b = 3.

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What is the scientific cause for brain fog?
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>>9368360
It consists of visible cloud water droplets or ice crystals suspended in the air at or near the brain's surface.
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>>9368360
just low energy my guy, i get the same thing. food, water, and time away from the screen on a walk or interacting with others. trust me it helps.
>>
>>9368360
Concentration seems to be a finite biochemical effect within the brain. There are some nootropics that will block the re-absorption of the relevant chemicals, or cause your brain to release more, or both, but they're not very refined and there's likely a lot more going on than simple neurotransmitter levels.
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>>9368386
idk man noorotropics are basicaly a meme, no evidence they actually make a difference
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>>9368360
Could have some correlation concerning fog brains.

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https://newsroom.unsw.edu.au/news/science-tech/laser-boron-fusion-now-%E2%80%98leading-contender%E2%80%99-energy

Is fusion really a meme?
>>
>>9368299
just because there is a bunch of pseudosciency shit surrounding "cold fusion" and all that, nuclear fusion was never a meme as a potential power source, we just haven't reached it due to lack of funding over the several decades for one reason or another
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>>9368299
This is not "cold fusion"
It's "hot fusion"
REALLY hot!
Demands temperatures MUCH higher than what's needed to make deuterium-tritium fusion proceed.
Advantage is that it would produce only charged particles which would eliminate the need for a thermal cycle. Efficiency would be much higher and there'd be no degradation of the reactor structure by neutrons.

But first, they have to "catch the rabbit".
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>>9368299
Lrn2meme fgt pls

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>He fell for the "CS is a meme" meme

Why does /sci/ hate CS so much? Are you all just jealous you don't make any money like we do?
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>>9368794
First internship in CS. BlackBerry. Already makin more than my friends who have their bachelors in electrical engineering.

CD is the only degree where extra hard work actually pays off in the job market.

No matter how much useful physics you understand or read, the fact that I was able to develop an app with over 500k purchases at the age of 17 over rides that haha
>>
>>9361376
Everyone in science has to code. You will end up being the least specialized and most common of workforce, having the hardest time finding unique work if you have no skills apart from computers. I'm doing materials and I'll be developing research on the nanotube circuits and transistors you guys will be sucking the cocks of in about 3 years. Toodloo python autist.
>>
>code 2-3 hours a day
>fuck around in the office, browse reddit and listened to podcasts for the other 5-6.
>make 80,000

feels fucking good to be a meme boys
>>
>>9361376
>we
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>>9368917
have a nice life bugman

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It's common sense that incest leads to ugly, unintelligent, sometimes sick children due to lack of genetic variance. But to what extent is this concept true. What happens if two people who come from incest have children? They should be far apart genetically because the incest should remove them from the common pool of genetics. So if they get children, would the children be super attractive and healthy? Has something like this ever been tested?
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>>9368355
If by superhuman you mean webbed toes and regressive/destructive gene traits. Yes.
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incest is actually good.
>>
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>>9368377
>psychic powers
>>
>>9368355
>They should be far apart genetically because the incest should remove them from the common pool of genetics
They won't be any more "removed from the common pool of genetics" than their parents were, at the most. And you haven't given any reason as to why you would think they would be somehow super attractive and healthy. What IS probably true is that a child whose parents were both products of incest, separately, will probably regress to the norm and be at significantly lower risk for issues related to double-recessives than the parents were, though still at a slightly higher rate than the general population.
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>>9368355
>common sense
gtfo commonsensefag
it's neither one nor the other

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Is caffeine a meme?

Does it actually make you more awake or does it simply stop you from getting more tired? So if you are already tired will it make you more awake?

Personally when I take it I only feel restless without increased mental alertness.
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I eagerly await the day mods start banning shit threads like this
>>
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>>9368898
"tiredness" is felt from a signal pathway which culminates in adenosine being absorbed by adenosine receptors, which ultimately tells us we're tired.

Caffeine blocks this interaction, by fitting into the receptors without triggering them, essentially blocking adenosine from fitting into the receptors and sending the signal for tiredness. If you imagine the molecular situation, then, you're already tired and adenosine is already present, the signal will still be blocked because with caffeine present, there will be on average fewer connections between adenosine and the receptor.
>>
>>9368921
So what happens to the adenosine when you sleep and then wake up?

Also what about cases when you had enough sleep yet feel tired?
>>
>>9368930
The ultimate "tiredness" can be psychological- it is, after all, the interpretation of the chemical signal, and this interpretation could be achieved through processing.

Think of the adenosine as an issue of rates. When the rate of adenosine being created is higher than the rate it naturally degrades, you end up feeling tired. The rate of adenosine being created/released is a matter of many factors- hormonal, psychological in some cases, and based on the circadian clock and how time is regulated.

So, it's not like it's a set 'only when you haven't slept' sort of thing, but that likely by the time you wake up, the production line for creating/releasing adenosine will have been turned off/low for long enough that there's not a significant amount left over.
>>
>>9368898
Lrn2meme fgt pls



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