Archived threads in /sci/ - Science & Math - 1593. page

>>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, the relevant intersection of the circles as the radii vary will lie on a line, so we could just look in that direction.

With no further information, two detectors will not be able to determine distance, just direction.

>>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).

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.

>>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.

>>8151816
Exist.

>>8151816
It's probably impossible to evolve intelligence as a group that would kill you. Each time an individual comes close they die or just stop talking.

But yes, I think there's a limit to what can be done with technology, and we're very close to it.

There is no reason to think aliens exist. That's silly.

One possibility that no one brings up is that intelligent life could have gone the matrix route and satisfy themselves with simulating the universe on their own planet and never leaving.

>>8151582
Man, this would have been a cooler way for the Reapers to wipe out advanced life in Mass Effect

>>8151658
just did
prety nice vintage sci-fi

>>8151582
Do you you have any proof for your edgy theory? How will a computer even create a black hole?

my grandma has a biology related degree. she also had math. no problem with it, she actually liked it a lot.

>>8151402
>exp is not cursive
>the ds are
Why is it so hard for everyone to do it right? The 'd' is not a variable, it's not supposed to be written cursive.

>>8151615
The people reading it will understand what's being said so what's the problem?

>The 'd' is not a variable, it's not supposed to be written cursive.
By this logic the exp shouldn't be written in cursive because it's a function rather than a string of variables. If you're going to get in a hissy fit about formatting rules then at least have some consistency.

just poo in the loo

>>8151395
send it to designated shitting streets in Pajeetdia

>>8151395

http://www.bloomberg.com/news/articles/2015-02-01/how-the-chinese-are-turning-fecal-sludge-into-black-gold-

>Read 20-30 pages in the morning
>Do some exercises
>Occasionally start a discussion about the subject with friends
>A few more exercises
>Revise the book pages in the evening

One nice thing to do is to read 'related' stuff for leisure before bed, like biographies of mathematicians etc

File: 1453623779956.jpg (39KB, 697x943px) Image search: [Google]

39KB, 697x943px

>Not going to the lecture
>get the syllabus
>get the relevant lecture video or book chapter somewhere
>listen the elcture or read the chapter once
>make 2-3 examples
>never review or do any other example
>just excel at the exam

4.0 GPA (Note 1.0) @ Germany reporting in

Yeah, just like eating rocks works.

>>8151238
Don't some animals eat rocks to aid digestion? Seems to work for them.

>>8151243
wild parrots are known to eat bentonite clay as a sorta antidote for toxic berries.

>It seems every """result""" gets overturned
Post 5

>>8151012
economics is indeed retarded.
guessing about imaginary numbers.
numbers, by themselves, are already inherently imaginary.
and these people try to predict things that haven't happened yet...im talking more than a two variable set of equations...like a retarded amount of retarded variables.
if there were no money, there would be no middle man
people could work for free
they could also take for free
there would be no greed
because there would be no need
everything is quality
nothing is built shoddily
if everyone was poor
wed be richer than ever before

>>8151052
Eliminate secondary motivators and people will focus on the more primary motivators.

>>8151008
I'm stupid too bro

>>8151008
why do we call it an 'animal body' when there are 100,000,000,000,000 bacteria in your small intestines?

really makes you think

>>8151016
I could have indicated such as well but I didn't want to be pedantic and dip into symbiosis.

>identify quirk of human cognition
>claim that this gives insight into the workings of the mind
>ignore the fact that elementary schoolers are intentionally taught to think this way
>ignore how people in 3rd world countries and animals don't think this way
>develop an entire school along this strategy

Cognitive science is still a step up from psychology, though.

Alright OP... what's her name?

>>8151003
Your mum

>>8150956
Fuck I meant less

2-1 = 1
3-1 = 2
ezpz next thread

>>8150965
floating point numbers motherfucker

>>8150773
>things like like entanglement

>>8150776
Thanks for pointing that out, friend.
It should read "things like like like entanglement" of course

>>8150773
Weird thing is that both Quantum Field Theory and General Relativity both provide incredibly precise results for the vast majority of energy scales (read <10^6 GeV)
But for some reason it still bugs me that we lose the concept that what matters are differences in energies when we go to GR

Why would anyone wanna waste time and money on an R&D on something vulnerable to bacterias, viruses, tumors when you can make artifical muscles from carbon-fiber ?

>>8150797
>when you can make artifical muscles from carbon-fiber
Because you can't make "artifical" muscles from carbon-fiber.

>>8150797
>artifical
>bacterias
:|

Also, because if one cell dies to bacterial/viral infection you just signal a neighbor to divide. Tumors are immortal.