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Archived threads in /sci/ - Science & Math - 1537. page

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I'm lost to what steps he took between (1) and (2). Can anybody explain it to me?
11 posts and 1 images submitted.
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sure
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>>8205305
Factor out (K+1)/6
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>>8205306
Please do, you cheeky cunt.

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Hey /sci/ this is a dumb question, does a magnet lose its magnetism by touching uncharged magnetic objects?

For example, if you were to get a Umagnet and have an endless stream of uncharged magnetic plates being passed separately in a conveyor belt. Would getting said Umagnet and touching each plate (one after another) for an infinite amount of time eventually discharge all of the magnetism the magnet originally had?

I am asking in order to understand if the Umagnet's action of aligning the spinning particles within the uncharged plates is temporary or permanent. In other words, if the alignment of the Umagnet's spinning particles misalign slightly every time it temporarily/permanently aligns the steel plate order to be attracted by it, then the effect on the Umagnet’s loss of magnetic power is permanent. Taking into consideration conservation of energy and entropy, this phenomenon could be considered a loss of efficiency on behalf of the Umagnet; which would actually be pretty neat.

Also, rate my MS Paint skills trying to depict the conveyor belt scenario as best as I can.
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Bump
Because fucking magnets how do they work?
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>>8204404

You are my hero.
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hello /sci, im a comp sci undergrad on my third year, and ive always had little faith on humanity and ive been losing it everyday, i always wake up and turn on my computer and see such absurd news atrocities and wonder what we have come to

so i decided from today that i will make it my goal in life to lead our race into extinction, and since im majoring in comp sci i thought that i would do so by creating an AI that would wipe us out in a terminatoresque way

do you think its possible, given a deacade or two?

do you think it would be easier to learn biology and do it using a disease?

how would you do it?

and im not talking like "i wanna kill the world tomorrow", im serious, what is the way that given a whole life of work, can bring us to extinction?
25 posts and 2 images submitted.
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It's probably not just possible, but inevitable.
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yes i imagine ive hear a bunch of theories, although most are pop sci clickbaits like

YOU WONT BELIVE WHAT STEPHEN HAWKING JUST SAID ABOUT AI

somre seem to be legitimate concerns, and lets say its inevitable, a billion people can scream inevitable but until someone starts to work on it it wont happen, so is it possible that if i start now, i could put a plan in action twenty years from now?

and is there anyone who works with AI here? or who studies it?
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>>8204178
Fuck off moron

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How does one program pic related?
What's the best programming language, ect.
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>>8203959
>How does one program pic related?

wew there are 3 ways of interpreting this

>How does one make a program that paints this image pixel by pixel.

>How does one make a program that gets the data being shown in the image.

>How does one make a program that plots the data like it is being shown in the image.

There are probably other valid interpretations. You obviously do not mean the first one though, as that would be stupid.
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>>8203966
Thank you for kindly pointing out that my question was flawed. It made sense in my head.
My idea is that such a program will plot data that is retrieved from text files for day-by-day market valuation. Then have events superimposed as vertical lines with information displayed upon mouseover.
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>>8203977
If it is going to be interactive then you probably need a full programming language and unless you are a genius then you probably want one that comes with free built in graph plotter class or library. (visual basic has this)

Then you can use clever programming to make a function that takes as input the position of your mouse and then finds what 'point' your mouse is pointing at and then you either have a formula that produces the message you want to show or have everything stored neatly in arrays that you can retrieve that data from.

You can do this in any language but I suppose the babby languages like python and visual basic would be best if you just want to accomplish this simple task in the shortest time possible.

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What exactly happens when you reach your breaking point?

Is there a difference between your perceived breaking point and the real one? Say if you are running and feel like you can't run anymore. What exactly makes you feel like that? Could you theoretically run a bit longer? Like say, if you were running in a competition you really want to win and not just working out by yourself?

And that is just an example. I am just curious what it exactly is that prevents you from pushing yourself. People would say it's laziness or lack of will. But surely it's not magic and has to be something that can be explained biologically?
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mindset
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>>8203754
I've experienced two kinds of breaking points - mental and physical.
Especially with physical stuff, the body's exhaustion signals can be ignored for quite a while, but if you're afraid of pushing further, you just give up. True physical exhaustion can't really be overcome by will - if the muscle isn't listening to your brain's commands anymore, having an iron will won't do shit to help you.
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>>8203778
I thought about this and wonder: It seems like the belief is that successful people have a stronger willpower. But do they really use willpower?

Say they are working on a project that is very important to them and they are getting tired. They don't need to use willpower really to stay up don't they? The same way you don't need willpower when you are pulling an all nighter playing video games / binge watching a tv show / browsing the web.

But if you had to study for an exam you don't really care about and you get tired then you would have to use willpower and resist the temptation to go to bed.

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>>8203566
No.
In fact that's probably one of the worst places to dispose of it.
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Just send all them radioactive shit to the sun.
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>>8203566
disposing them in israel is a infinitely better option t b h.

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Hey /sci/, quick question here. When will evolution reach the end and why?
17 posts and 2 images submitted.
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I'm a geology student. I've studied some paleontology. There is no goal of nature. It does what it does. The only way to answer that is to say that the ultimate end of evolution is extinction but you are more than welcome to travel to the future and find out yourself.
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>>8203441

When nothing exists in a living state.
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Stellar evolution outlasts.

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anything lit in todays nature issue?

http://www.nature.com/nature/current_issue.html

seems like a pretty boring one without any interesting articles
16 posts and 1 images submitted.
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bump

reminder you can access articles through sci hub
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>>8203273
Very cool finding about tool creation and use by capuchin monkeys 750 years ago. I imagine they've been doing it even longer than that. Shame they can't get from sharpened rock to bow and arrow though.
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>>8203480
that looks pretty cool but it was published in another journal

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Do you think there is a health risk tied with the use of wireless radiation?
It's not ionized but on the other hand it's a type of radiation our body and system has never been exposed to before and we're soaked in it 24/7 now.
32 posts and 8 images submitted.
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>>8203010
We've been bombarded by these waves 24/7 for the last 100 years.

If it was bad, we'd have known by now
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>>8203018
There has been radio broadcasts for 100 years with wide exposing but now people have wi-fi routers and gadgets in their own home.
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>>8203010
>it's a type of radiation our body and system has never been exposed to before
Nope, pic related. Every day, the Sun bathes us in the full spectrum of radiation, and much or the radiation less energetic than UV rays gets through our atmosphere. That means that the only radiation that isn't commonplace to us is x-ray and gamma radiation. Our wi-fi sure as hell isn't using either of those. It operates between microwave and radio frequencies.

If you turn a radio or television to noise, you're actually picking up the low-energy radiation that's coming at us from in all directions. The difference between that and wi-fi is that the energy levels of wi-fi radiation is put in a specific order so it carries the information we tell it to.

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I've read about life forms on gas planets and I've thought about floating jellyfish type aliens on gas planets. Furthermore I was wondering if it's possible for sort of conscious energy-ghosts to survive on gas planets, gas aliens operating from a higher dimension living on gas planets. Aliens that can somehow metabolize certain elements or compound(s) and convert them into other forms of matter and energy. I imagine they would look sort of like fluorescent squid-sludge-tornadoes.


http://www.scifiideas.com/science-2/gaseous-lifeforms-bursting-bubble/
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> sort of conscious energy-ghosts
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>>8201155
>bitches dont know about my boltzmann brains
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>>8201170
> A Boltzmann brain is a hypothesized self aware entity which arises due to random fluctuations out of a state of chaos.
oh boy...

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Is there any ethical justification to putting papers behind a paywall? I mean, it's pretty damn fucked up that in this time of unprecedented ability to share information so much is being locked away.

Would you be in favor of doing something like putting in a proviso to at the very least government sourced grants that requires free public access to papers?
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>>8202772
>government sourced grants
I would just defund those.

I would also not enforce copyright law. Let them have a paywall but if someone else spreads copies, not the government's job to prevent that.
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>>8202781
>Let them have a paywall but if someone else spreads copies, not the government's job to prevent that.
scihub isn't dead yet
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>>8202772
for da maneh you communist scum

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MathFoundations190: Numbers, polynumbers and arithmetic with vexels I
https://www.youtube.com/watch?v=OFzl37nX58A

When will undergrad learn Mset theory?
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>>8194906
>another wildburger post
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>>8194906
>the mset

Mind = blown
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>>8194906
Would every vector space have a basis in Wildburgers world?

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Serious question time /sci/. Should I go into cancer-research? I'm about to start college in about a month, and while I always wanted to go into physics or astronomy, my dad (pic related), passed away 7 years ago of colon cancer, and his death is weighing heavily on my mind as I prepare to enter college. I've always loved physics, and my dream is to somehow be a part of NASA, so this certainly isn't an easy decision for me, however right now I simply want to be able to save as many people as possible from having to suffer the same shit that my family and I, along with countless others, have had to go through. No one fucking deserves to die of cancer, and right now I simply want to assist in any small way that I possibly can in the fight against it.

So what do you guys think? Stick with my dreams and go into physics, or switch my focus to biology with the eventual goal of going into cancer research with the slim possibility of making a tangible difference in thousands, if not millions of lives?
20 posts and 2 images submitted.
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>>8204108
go for physics, follow your dreams
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>>8204108
I don't know what's your goal when you get in physics or aerospacials, you can save thousands of people in those fields too.
Do what you feel like to do, both are noble goals.
Just consider the implications of each "career".
Forgive my poor english and don't give up on your dreams.
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The final choice is yours, but by all means if you can see yourself in cancer research please go for it. One of my parents have it and Iam in nightmare knowing that he will die soon. Like you said no one deserve to suffer from cancer, it's a nightmare just to see your loved one dying without being able to do anything.
This is purely a selfishness from me, so do what's the best for you.

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USA is the best in Maths. Case closed folks.
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Asians in the USA**
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>>8203742
>what is USA
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>>8203742
Did you expect him to win or what?

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Is it possible for a hollow sphere to have equal centrifugal force at each point on the interior?
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>>8203392

If the hamilton limit is drawn from daric vectors with open sets, then providing the inverse tensor is negatively charged, the centrifugal force will be equal at each elemental point as governed by their computational relations.
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>>8203392
No
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>>8203392
yes, if it is not rotating

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