Archived threads in /sci/ - Science & Math - 570. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
Hey, so how come chimpanzee feet look like hands but human feet look like bird feet?
>>7706269
wtf do your feet look like dude? jesus
>>7706269
Because we're birds, duymbass.
Can I solve the Universe with just these 5 laws?
>>7706267
Mathematics is the language of the universe, but not the functioning of the universe.
Feynman gave a fantastic presentation about it during his Messenger Lectures.
>>7706297
>Mathematics is the language of the universe,
Nice Meme
>>7706317
There isn't a meme though
Physics II final is in roughly 30 hours, and I can't say I know too much.
How much can I learn in that time?
Write down relevant formulas, study them, know them inside and out. That is a start.
Should've done the coursework, plebbo, now you will soon know the grave mistake you've made by jacking off to animu all day long.
>>7706258
go through physics II book
write down on your shitty notecard every formula that comes up. should all be about magentism and electrostatics
go to test
find which formula you need to plug numbers from problem into to get right units
still probably fail the course because you haven't done enough other work that a passing test will also pass the class
That's right guys!
The first tests for creating a stabilizing a fusionplasma are starting this week in Greifswald, Germany! Is /sci/ hype for the next big step for sovling any imaginable engery crysis?
Sorry, but for now I only have a german link for proof. If someone could find a english news article, that would be great.
They should put some refugee camps next to it
just in case
>>7706251
>Implying half a mol of radioactive material could do shit
>>7706246
Greifswald fireworks?
post video
First of all, I've looked through the sticky guide but didn't find anything on my question, so sorry if I missed it
I'm interested in learning about modern-day physics, especially the more abstract concepts such as the concept of "information" and quantum theory in general
My current knowledge essentially stops at the Newtonian model, relativity and wikipedia articles about black holes
However, as a CS grad, my math skills are shit tier
Is there any recommended book or resource that explains these concepts without relying...
Comment too long. Click here to view the full text.
You can't swim yet you're asking to dive in the deep end
>Is there any recommended book or resource that explains these concepts without relying too much on higher level mathematics (if such a thing is even possible) while at the same time not going full on retard popsci?
Dis nigga
>>7706098
Yeah I was worried that that would be the case
Any resources that introduce higher-level mathematics alongside physics as they are needed and appear?
I'm not looking to draw my own conclusions or anything like that, I just want to broaden my horizon on the current standard model and understand a simplified version of it
>>7706087
Penrose's Road to Reality.
Where do you lately get pirated pdf textbooks?
Most of the /sci/guide's links are dead or empty of books.
I'm trying to get pic related and I don't find it. I also need Levine's "Quantum Chemistry".
>>7706078
last thing I used was libgen but I saw a thread on /g/ a few weeks ago saying it was getting shut down or something.
>>7706078
Have you considered buying the textbooks like someone who isn't a fucking nigger?
Are there any repercussions to spending a long time in the shower? It's the best part of my day and I'd like to start having 3-4 hour sessions in there, maybe even get to the point where I can lie down and sleep under the shower head.
Gookchan doesn't have a health board so I figured /sci/ would be the next best thing.
>>7706018
you will lose your penis
>>7706021
This, it causes your testosterone to decrease rapidly, I lost 3 inches off my dick and I was only showering 2 hours a day, don't do it OP, it's not worth it.
>3-4 hour sessions
Jesus christ that's a long shower.
>lie down and sleep under the shower head
Do make sure you don't block the drain with your body, people passing out in the shower and doing that can lead to some serious water damage
Other than that, I would reason that professional swimmers probably spend a lot of time every day in water and they seem fine.
Biology question here
Is there a scientific validity to romantic attraction or is this a social concept made by society?
>>7705997
Humans are social. Close emotional attachment is to be expected. It has various benefits.
Humans neocortex (the outer brain, the conscious and "smart" one) is directly connected to the limbic brain (the emotional one, not conscious). You can't chose who to love or like, the limbic brain automatically selects who is "perfect" for you; since the limbic brain is deeply connected to the neocortex we will feel attachment to someone that's not part of our family (animals like dogs start liking you because you maintain them, their limbic brain is really developed but their neocortex is not half as developed; humans can have "love at first...
Comment too long. Click here to view the full text.
>>7706220
>You can't chose who to love or like, the limbic brain automatically selects
This is near universally wrong. You can most certainly choose how you want to feel, it can feel real, and you can do it for years.
Not to sound like a prick, but don't assume your own lack of mental exploration and slave-like mentality constituents the truth of how the human machine works, and can be made to work. You can choose how you feel. You always could, you always can.
But you...
Comment too long. Click here to view the full text.
There was this sperg on here that kept harping on about "floating cities on Venus" and I along with the rest of /sci/ laughed at him. However after reading this article
http://spectrum.ieee.org/aerospace/space-flight/nasa-study-proposes-airships-cloud-cities-for-venus-exploration
I am starting to believe that it really is a better idea than Mars.
>Shielded from radiation
>Atmospheric pressure is the same as on Earth
>Venus is closer
>Same...
Comment too long. Click here to view the full text.
>>7705967
Nobody cares if it's more viable for a colony. We like Mars better because it has a lower gravity (lower escape velocity) and more usable materials. I know that Venus is more suitable for human life, but what's the advantage of going there? What is the human race gaining? Going to Mars allows us to more easily mine from the asteroid belt, and that's what space exploration has always been about. Exploration of new frontiers is fueled by resources; human colonies just provide a bigger customer base.
>>7705967
>I along with the rest of /sci/ laughed at him.
If by "rest of /sci/" you mean that one asshole pushing your confirmation bias sure.
We ain't colonizing shit in our life times anyway, get over it.
>>7705967
>240x the solar power available
lol no, 240 PERCENT
>75 degrees Celsius is easier to deal with
No it isn't. Making something warmer is much easier than making something colder.
Beyond that, not having access to the planet surface makes things a lot harder. On Mars, you don't have to bring most of your building materials with you - just tunnel in. On Venus, it would be more like being on a space station - just much harder...
Comment too long. Click here to view the full text.
Calc 1 student here. Final is in 6 hours. I could use more optimization practice. Does anyone know a resource for practice optimization problems (that have step-by-step solutions available)? Preferably a resource that has both easy and hard problems.
>>7705936
take derivative
set to 0
check boundary conditions
>>7705936
>Final is in 6 hours
If you haven't studied yet, you are fucked nigga
>>7705942
This is what I do:
1. Find objective function
2. Identify constraints
3. Reduce objective function to one variable
4. Identify domain of objective function
5. Differentiate
6. Find critical numbers by setting to 0
7. Test critical numbers using on of:
a. closed interval method
b. 1st derivative test
c. 2nd derivative test
8. Answer
Hardest part is easily steps 1 and 2. Sometimes step 5 is tough if I have to differentiate something messy. The rest is easy.
Retards are still mad about Monsanto and claim that genetically modified food products are "unnatural" and "abominations."
I sat and listened to a woman bitch about how we didn't know if they were carcinogenic or not. Sometimes I enjoy my rage, other times I do not.
My research in genetics was solely in humans and rats, so I don't have firsthand interactions with GMOs. I hope there are some /sci/entists who do work in the field. Pls post about what you're doing and what your research will be the basis for in years to come.
C:
>>7705881
Last time we had a thread about this. Some faggot kept posting pictures of pigs and rats with tumours and blatantly lying to promote the anti GMO agenda.
What I got from that thread is that GMOs are perfectly safe, but there's a big economic argument to go against them: GMOs are the future and they're going to crash smaller markets. This is a reason some countries are banning them.
bumpan with zincfinger, because it's what I know and love
>>7705887
They threaten the whole bullshit non-GMO market which makes billions.
So some corporations throw a few million dollars to San Francisco natives to go smell bad around labs.
I remember reading an article from a Monsanto research head a few years ago about how the focus was going to shift from optimizing the crops themselves to optimizing where the crops grew, focusing on the soil's superregional ability to support certain crop types better.
It would make harvesting a pain, but it was an interesting idea.
What would happen if you used an oil rig to drill into a magma chamber?
>the floor is now lava
http://gizmodo.com/humans-are-once-again-attempting-to-reach-earths-mantle-1746388432
>>7705854
You mean while it's full of magma? Some kind of magma-related shenanigans, I'd wager.
If Mars had never lost it's magnetic field, would it be the second habitable/inhabited world besides earth?
>>7705824
Maybe. But from what we know a solar system can not have more than one habitable planet in it.
>>7705839
Why not?
>>7705839
Dubious.
Hey /sci/ I use to hate math as a passion.
Recently though I've learned why I hated it so much. It wasn't because I found it boring or anything like that, but when my teachers told us how to do formulas, they never told why they work. I discovered this recently when I found out what makes pi so important.
Now I'm wanting to get into physics and would like some suggestions on books I should pick up.
I also have zero experience with physics.
Pic unrelated
>>7705820
feynman lectures
>>7705820
most of the math used in physics is butchered to the point that you have no idea where it came from. just an honest heads up.
Look up Young & Freedman's University Physics. It's great for beginners and covers quite a lot of subjects.
Does anyone else read Geometrical/Mathematical proofs?
Like Euclid or Archimedes?
I'm going to ask for The Works of Archimedes for Xmas, has anyone read?
>>7705790
Why would you read any mathematics more than ~200 years old for any other reason other than to stroke your ego?
haven't extensively read it but my favorite topic in math is geometry and I enjoy their proofs
>>7705809
If you enjoy proofs don't read non-rigorous, obsolete shit.
