Archived threads in /sci/ - Science & Math - 575. page
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How dangerous is strong AI?
depends on who controls it
>>7702044
moer dangeros dan week ai
pretty dangerous tbqh family
I've been looking around and I've decided to ask cause I'm trying to see if It's possible to make a high yield mini like nuke And I've come across the Thin man a old project that was abonded in 1944 it was a gun type nuclear plutonium weapon and I think it can be much more smaller and better but is it possibile to even make a gun type plutonium nuke? Image related that's the bomb they tried to make of the thin man.
>>7702024
but why would you want to do that? I mean we have hydrogen bombs now.
Op here and if you want a reason why I think the weapon can be much more lethal though and a late yield nuke can be good for taking down HQS and terrorist groups Ex: Isis
Does the Davy Crockett nuke count?
What is the culture like in your field, /sci/? Especially/preferably if you are at the graduate level or beyond.
>>7702011
Why would he want to take a girl home and give her Kaolin?
>physics
Set of weird cunts who like Popsci, think they are fucking geniuses and always dog on engineers, art students, biologists, chemists, mathematician and basically anyone who isn't a physicist.
Professors and lecturers are usually chill though
![86a2f404-0597-4f5c-9f37-d84383df4bfa[1].gif](https://i.imgur.com/OYUowvn.gif "86a2f404-0597-4f5c-9f37-d84383df4bfa[1].gif")
I'm still trying to wrap my head around how a system can have heat added/removed but not change temperature. Is this because of both the P and V changing so that T can remain constant in the ideal gas law?
Am I thinking of this too literally? I know that heat is units of energy/mass, and temperature is units of Kelvin so I can see how they're different, but isn't Kelvin just another representation of how much kinetic energy a group of molecules has? I don't see how you can change the energy/mass without changing the kinetic energy of the molecules.
>>7702008
two buckets of water has twice the heat content as one bucket of water even though they're all at the same temperature.
What the guy above said. Temperature doesn't go with quantity - look uo "intensive" variable. Also, kelvin is a spooky unit, consider it to be the same as energy, there is only the arbitrary Boltzmann constant in the way. This bts. Makes entropy unitless, as it should be. Its a combinatorical quantity.
What's so special about topology?
>>7701995
What does it mean for two objects to be close?
>>7702002
>
Not a topologist, but if you ever study non-foundational math, you'll find that topology is ubiquitous.
A solid introductory graduate course in topology will quickly reveal how much of the, say analysis, you've done was actually topology, with only a few concepts being truly unique to analysis, like, say, integration.
I know very little of algebraic topology, but I do know that whenever you couple algebra with something, you're looking to find a way to...
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>>7701995
> Topological Derivative
> Neural Networks
Solving Artificial Intelligence
I'm in college and I knew this before, but I'm having a severe brain fart and I can't think straight. It's an understandable result of studying statics.
>pic related
If I were to split any right angled triangle into two parts from point C, how do I know the distance between point C and AB, and the distance between the point where C meets AB to A and B?
I know this is basic high school shit, but yeah, I forgot.
>>7701993
use law of cosines to solve for angle C and then use law of sines to solve for angle A, and from there use ambiguous case of law of sines
Make a Pythagorean triangle or do the law of sins.
sinA/ a = sinB / b = sinC / c
It's not too hard, anon.
a^2+b^2=c^2. Draw a line from C to the center of c making two 90° angles. Now you have a^2=1/2b^2+the new line^2
Who /biomech/ here?
Has anyone read up on load bearing exoskeletons for walking? It sounds like they'd be useful for labor and physical jobs if they're scaled down to more compact designs
http://biomech.media.mit.edu/#/portfolio_page/load-bearing-exoskeleton-for-walking/
>>7701737
yes
check honda exo legs
they got neat designs
>>7701755
I heard that its more likely this kinda thing will be used to help really old people get around easier, earlier than it will be for manual labor
>>7701774
They started testing them in some japanese hospitals around 2013, but that's the last thing I can find for them, it's like they've dropped off the face of the earth
How complex are walk assist devices, anyways?
I have a question relating to photons and momentum. I made two Feynman diagrams, I hope I used them right. (Time goes bottom->top, space goes left->right)
In the diagram on the left, a beam-riding/photon sail configuration is shown. A high-energy (high-frequency, low wavelength) photon comes in from the left, then is reflected by the atom, leaving the atom with some of the energy originally within the photon, and the photon with less energy as it leaves.
The diagram on the right depicts the situation I am asking about. A photon stimulates an atom to emit a photon...
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bump?
>>7701715
at first glance it doesn't look like momentum is conserved. Remember, light has momentum too!
>>7701798
Yeah, that's why beam-riding (on the left) works, right?
The photon transfers some of its momentum to the atom.
For things with mass, p=m*v, so it increases the atom's velocity.
For photons and other massless particles, p=E/c, and E=hv (where v is the frequency), so the photon's frequency decreases.
In my diagram on the right, I guess I'm asking if an atom emitting a photon gives it momentum, through a decrease in the energy of the atom.
Lasers work by using photons to cause excited...
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What does /sci/ think of MolView? Is there a better molecule editor/viewer I can use?
>>7701617
It's not part of blueobelisk....
But it's GNU PUBLIC LISCENSE, so it's allright! I'll have to check it out. Personally I use avogadro. Nanoengineer is pretty cool too, but I can't get the GUI to work on GNU\Linux.
What is that monstrosity?
>>7701639
It was me attempted to build a polypeptide from scratch... Things didn't go well and it ended fusing with two other peptide chains by mistake(The bonds were too close to eachother.)
>>7701617
ChemDraw maybe ?
Engineering major here. I hate factoring. Is there no hope for me?
>>7701531
Pic related?
>not using synthetic division
>not taking stimulants
What's the importance of learning probability? I find it so fucking useless.
If you ever want to get your hands on raw scientific data you should know how to handle it, and a thorough understanding of probability is the basis of that.
Other than that countless applications in economics and such.
>OP sucks 10 dicks a day from a pool of 100 men of varying race
>if there are 23 black men in the pool what is the probability that OP sucks at least 2 black dicks a day
seems useful to me
>>7701455
That's only more proof that it's useless as the computation will give a probability < 1
What is the most hideous field of mathematics and why is it analysis?
Algebra is worse. Fucking commutative diagrams!
Analysis is kinda dry (at least what I had to take for my physics degree). The proofs are mostly either formulaic or completely unintitive and sort of mechanical.
>hating analysis
all of the shitty people in my first year class hate analysis. Honestly, if you can't at least pass basic measure theory/functional analysis you don't deserve to be a mathematician.
There are definitely more interesting fields than entry level real analysis, though, and some of the theorems are a bit dry.
How could pic related be possible?
Not an encased dome, but something that would heat up your lawn when it's freezing.
Imagine if the average house had one of those things - where when it's cold outside, you can step out in your lawn wearing shorts and a t-shirt.
Perhaps you could erect multiple poles out on the lawn, and then stretch out this thing that would heat your lawn.
Why couldn't this be a mass produced thing?
Because it's fucking retarded and would cost a ton of money.
>>7701409
>one of those things
>this thing that would heat your lawn
>mass produced thing
what thing
all I see is a drawn mockup of something that would require either ridiculous amounts of energy to keep warm or some sort of unobtanium which isolates just as good as house wall while being transparent and thin
>>7701416
>enjoying your lawn is retarded
jelly yuropoor detected
If one were to pick a random integer between 0 and infinity, wouldn't the chance of picking an integer less than infinity be zero?
Infinity is not an integer
The chance of picking infinity would be (approach) zero. But the chance of picking any other one specific integer (such as zero itself) would also be (approach) zero.
>>7701268
Infinity isn't a number.. Even when working with extended reals, when speaking of probability measures, and consequently probability measures, the set where a RV takes on the value + infinity or -infinity has measure 0...
Also, see Kai Lai Chung's book on measure theoretic probability.. Picking a random integer doesn't quite make sense in the case to which you're referring.. I'm assuming you want all integers to be equally likely. There's no uniform distribution for infinite discrete sets.
What does /sci/ think of the quantum suicide thought experiment?
Gee, I can say ridiculous ass shit and people will probably buy my products because of it.
>>7701275
Why would I want to kill infinitely many versions of myself (even if it's not all of em)?
