Archived threads in /sci/ - Science & Math - 618. page
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Is there something that affects our health about what we don't know/care in daily life?
Should I care about wifi in a commie block where every-one has access to the internet and uses wifi?
>>7666018
women
>>7666018
Wifi devices don't put out that much power. There's a bunch of other stuff that would (probably) be worse for you if wifi was harmful, like fluorescent lighting even.
>>7666108
Wifi penetrates through cement and therefore through the skull altering brainwaves. Having no idea how brainwaves operate.
I really curious in what the future will hold. I think about it rapid ally but who doesn't? In 10 years how do you guys think our technology will be like? The medicines, computers etc.
Also I heard about quantum mechanics, what does this mean?
>>7666001
In 6 years
>Max computational power reached
>Tight oil supplies cause medicine, plastics, and other petrochemical shortages
>Economy in ruins from the bust of the VLSI bubble, subsequent lack of innovation, material shortages, and taxes from economical wars.
>Historic global depression and unemployment which leads to widespread banking and business failures
>Terrorism...
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If the last 10 years are anything to go by, the next 10 years are going to be a whole lotta nothing. Everything was going so fast and then all of a sudden it all stopped somewhere in the mid 2000s. A good bit of infrastructure and some sound engineering here and there, but computers are barely growing (and somehow Computer Science seems to be stuck in 2002, but that's what happens when you monetize something to such an absurd degree) and scientific advancements have been sparse. But that's usually how it goes. Science happens in leaps and bounds. With most of the time spent looking back at what we just passed over or looking at the next insurmountable gap we have to pass.
Also it's funny how everyone gets the impression that Quantum Mechanics is some new field with lots of pending advancements when it's older than General Relativity. Simple Quantum computing proof-of-concept archetypes MIGHT be coming, but I wouldn't hold your breath.
>>7666001
The surest prediction of the future is that no one can predict the future.
I've read the novela 1936, which was written in 1886, positing the future of 50 years hence. Heavier than air flight proved impossible, and so everyone traveled about on high-speed trains. Poverty, disease, and racism had all been eliminated...
Well, they did not get much right, but it was an entertaining utopia.
When I divide something what's actually happening?
>>7665926
You're dividing it. Separating one whole into multiple constituent parts.
What does that REALLY mean? We don't know. We just don't know. We only understand it on certain scales.
>>7665926
You're multiplying by its inverse
You're repeatedly subtracting
200/10 =20 because you can subtract 10, 20 times from 200.
It's not that difficult really
>oh you're still curious about those bright spots?
>here's a heavily doctored photo
>they're nothing probably ice or salt even though our data proves otherwise what are you a crazy where's your tinfoil hat crazy guy?!? :^)
>>7665912
Got tired of making EmDrive threads?
>>7665912
NASA has been real silent about it.
These threads without the source link to the original photo always trigger my autism.
Post sauce or go sudoku, you faget.
Let's see who on /sci/ is actually good at solving problems in number theory, the ultimate and best form of mathematics and who is just here to shitpost.
>>7665872
What is the question?
Clearly, OP, you are the one here to shitpost. The question isn't even stated in the picture, or your comment. You probably don't even know what the question is.
>>7665872
8=7+1
16=7+9
32=7+25
64=7*9+1
128=7*1+121
256=7*25+81
512=7*49+169
1024=7*9+31^2
...
Hey, /sci/
Have you ever experienced Deja vu?
How do you explain this phenomenon?
>>7665866
We don't, it's supernatural.
Check you religious texts of choice for explanation
>>7665866
>Deja vu
Come back when you're asking about Deja vu of Deja vu, I get that every so often and that's a mindfuck.
>Deja vu^3 just straight up leaves you thinking you're in a time loop
>>7665866
Yes.
Something something about dreams and the brain keeping leftover metadata around that gets attached to new memories.
Do the physicist find work?
What kind of jobs do the physicist?
I have seen that most end teaching in high school.
I wonder which company or companies employing physicists, not just research centers or universities.
Where I can find a job?
I like research but if you are not a super genius or have very good grades, just never give you a position as a teacher or researcher.
Im American, but I dont mind working in Europe.
Le bump
You can work i a Bank. The Black-Sholes equation made it Physicist.
You can work at McDonald's.
Is he our generation's Einstein?
why is he so memed? Whats wrong with the guy?
>>7665663
He's black
>>7665658
I'm not sure he even does research.
What is really crippling the progress of string theory?
>>7665652
No mathematical basis. It's just pothead waving their hands using big words.
Reality
>>7665652
https://www.youtube.com/watch?v=yqLlgIaz1L0
Any chemists here? organic chemists in particular
I have a dicyclic ketone compound with a hydroxyl group on it and I want to do a Wolff-Kishner reduction reaction to reduce both ketones to alkanes but would a Wolff-Kishner reduction affect the OH group in anyone because I want to keep the OH group on the compound unreacted
What drug is this?
>>7665485
Why do you need to know what drug this is?
>>7665482
Wolff Kishner does not reduce alcohols, I never actually used that in practice but I believe it uses an alcohol as a solvent.
Don't know how much it costs either. You can always go the gay route and dehydrate and hydrogenate
Does it require heightened intelligence in order for someone to appreciate art?
>>7665357
to create art.
I don't know about appreciate, but it does require heightened intelligence for someone to have a meaningful discussion about why they appreciate a piece of art.
Hello /sci/, I need a little bit of help. I'm trying to teach myself differential equations because I'm out of school due to financial reasons. I'm working on the pdf below.
http://www.cengage.com/math/book_content/0495108243_zill/projects_archive/de8e/Project3.pdf
My question is how I would approach solving this ODE with Euler's method. I've attached a picture of the actual problem to hopefully make it easier for you.
My initial value is y(L)=0, so do I just move backwards in steps of L (i.e. 1L, 0.75L, 0.50L, 0.25L, 0L) and make my Euler table that way?
>>7665323
I don't know Euler's method so I won't try to teach it, but this is how I would solve your equation (I rename your ratio R):
[math] y'= \frac{ y-R \sqrt{ x^2+y^2 }}{x} [/math]
[math] y'= \frac{y}{x} - R \sqrt{ 1+ \left( \frac{y}{x} \right)^2 } [/math]
sub in u=y/x,
[math] x u' + u = u - R \sqrt{ 1+ u^2 } [/math]
[math] x u' = - R \sqrt{ 1+ u^2 } [/math]
which is separable.
>>7665396
So I would just divide each side by the square root term and by x, and then integrate each side? Then, I could solve for R by re-substituting y/x for u?
Greetings, My name is AJ and I am from the galaxy Andromeda as you humanoids have named it. We have found a mysterious object and have figured out where it came from, your world. My world has issued the destruction of your world. We will initiate this destruction unless you prove to us why your species should continue living. You have 24 hours
>>7665304
>My name is AJ and I am from the galaxy Andromeda
You aren't fooling anyone Megatron.
>>7665304
okay but hold up - have you heard this track?
https://www.youtube.com/watch?v=OHZRHEJHS2k
welcome to eb games
Hey scientitions,
I'm wondering if any of you fine anons have any constructive comments/thoughts about the following.
I have 10 measurements of the useful life of a device. So I don't have a lot of data. I was wondering if any of you agree with using a conservative confidence interval using student t and chi square to estimate mean and standard deviation of my device's life . Sorry about my english - not a native speaker.
thoughts? thanks again anons.
gonna bump once or twice waiting for a based anon to chime in.
no one?
You could bootstrap it
I have a challenge:
assuming all the sqaures have side length 1, what is the radius of the smallest circle you can circumscribe arround 1, 2, 3 (and so on) sqaures? r1 and r2 are easy, r3 is a bit harder. Let's see how many you can get.
.999999 != 1
>>7665379
You win!
A gave up on solving the general problem so have #3. #4 is obviously trivial.
