Archived threads in /sci/ - Science & Math - 657. page
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![amoeba-eating-paramecium-o[1].gif](https://i.imgur.com/Zd4qcWf.gif "amoeba-eating-paramecium-o[1].gif")
Now, this fucker doesn't have any legs, limbs or doesn't have any muscles. It's baffling enough to understand how they move around and chase stuff but how does it move so fast ? It's ridiculous.
https://www.youtube.com/watch?v=pvOz4V699gk
>>7587047
Have you read about slime molds? Another example of an unintelligent, simple life form that does some pretty amazing shit.
https://en.m.wikipedia.org/wiki/Slime_mold
They can solve mazes, when separated they find each other again and reunite, really strange.
>>7587047
Are you talking about the amoeba or the other two cells?
>>7587593
The other two cells that freak out. I have no idea how they can move so fast.
Even multicellular organisms like the tardigrade has completely evolved a multipedal muscular based system for walking as well as functions like eyes, respiratory and digestive tracts. And we're talking about an organism with 1/6th size of a sand crystal. This is bullshit.
Does the limit exist at x=c in pic related?
ye
derivative no
>>7586884
not what he asked you baboon
The way we learn(understand) Maths in elementary school is boring, if you were the Minister of education, How can you solve this issue?
pic related*
Morocco
teach logic and basic set theory
That sound really fun!
>>7586828
But.... How??
Hey /sci/, I just finished highschool and want to get into studying neuroscience/something related by next year. I have to kill 6 months between now and starting military service (fucking austria) and would like to get familiar with the subject so I can decide whether or not this is something I want to dedicate my work/time to.
Could some of you anons give me tips on where to start? If possible weblinks/non expensive literature.
Thanks in advance
This is a pretty slow board so don't bother with bumps after just a few minutes. That being said I'm also interested in some good beginner resources for neuroscience so hopefully someone here can help us.
>>7586754
thanks I'll check it out!
/sci/, what happens when you start fiddling around with diamonds and lasers?
>>7586694
You go blind.
>>7586694
You mess with the third law. Don't mess with the third law.
>>7586766
Wait, so we can actually fly?
Jesus christ.
I'm currently a first year maths undergrad in the UK, on completion of my 4 year course, I will have a Master's degree.
What do I have to do to get into research?
One of my biggest worries to how to make a good application for funding, or even getting the PhD itself. Any tips? ...To be honest, I lack basic knowledge like what ever are the prerequisites to get into maths research, all I really know is that you almost certainly need a PhD.
>>7586664
...Note to self: Never forget that /sci/ is 80% high schoolers.
>>7586664
>Mmath
>Masters degree
Pick one.
If Research Experiences for Undergraduates are a thing where you live, I strongly recommend that.
Why aren't trials based on Bayesian reasoning?
Because it is illegal
http://understandinguncertainty.org/court-appeal-bans-bayesian-probability-and-sherlock-holmes
>>7586563
>only 100 total DNA-based suspects in the city
Great job, you just increased the odds he is guilty from 1-in-10,000 to 1-in-100
Criminal cases are based on reasonable doubt, no the balance of probabilities. Probability estimates are not evidence. They're supposition, circumstantial at best. Given the ability for so-called experts to get the calculations wrong and for jurors to misinterpret results, it should be used very carefully if at all (that case of the Dutch nurse prosecuted for murdering patients is another example – see Bad Science).
This is not anti-science or anti-math. It’s recognizing what probability theory is actually telling you. After all, banks use very sophisticated probability/statistical...
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I'm looking for advice on how to financially support myself for graduate studies at MIT and similar tier universities.
Say that I do get accepted to one of those schools, what's the best option? I heard you can work inside? Will that cover all tuition and living expenses?
>>7586270
no idea about top tier but I'm applying to a relatively non competitive school (gre in about 12 hours fuck) and getting a TA position doesn't seem to difficult. I think they get benefits like a meal plan and obviously pay per hour. If you do decide to live on campus I think that is covered as well but tuition is still up to you so scholarships might help
>>7586275
This may be a retarded question but can you be a TA off the bat? I'm not from the US.
>>7586270
they give you a stipend and a tuition waiver
how would you prove f(n) = a[sub]n using induction?
for a problem like f(n) = 2^n -1, and a[n] = 2*a[n-1]+1, a[1]=1?
i proved a 2 base cases, n=1, n=2, to both be true. i don't get how you prove f(k+1) = a[k+1] though..
>>7586202
a[n] = 2^n-1 = 2*2^(n-1)-1 = 2*2^(n-1) -2+2-1 = 2( 2^(n-1) -1 ) +1 = 2*a[n-1]+1
>>7586243
how much practice does it take to see something like this? i was doing scrap work for probably an hour after finishing the base cases and couldnt find anything close to this...
i left a soda can in my car last night and the next morning the sides were crushed in
can science explain this
>>7586056
Empty can or full can?
>>7586056
Simple.
The gas particles and liquid particles inside the pressurized can were okay all night until the sun started rising. The rising temperature made the gas particles start moving faster, hitting the walls of the can even harder, then making them bounce even harder in an endless process.
You may think that this would make the sides looked pushed out but this is where you need to drop chemistry bullshit and think about quantum physics.
So the gas particles kept going fast and hitting the walls of...
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>>7586077
empty
Is [s4s] on to something with this copypasta? (minus the memes punchline)
>>7586034
Almost sort of. It's like a babby version of 'why does meaningful structural information accumulate in an entropic universe'.
>>7586049
Define information.
not sure if DIY or Sci but here we go. How do I make rocket fuel. Liquid rocket fuel. I was thinking a alcohol + Hydrogen peroxide. How do I get the pure alcohol in order for the mixture to work?
>>7585887
Buy ultra pure kerosene. You can use lower purity but expect more coking.
>>7585887
Just watch October Skys
https://www.youtube.com/watch?v=k6N_4jGJADY
Wikipedia says that its density is 0.9 kg/m^3
At sea level and at 15 °C, air has a density of approximately 1.225 kg/m^3
Am I missing something here or is this just Boeing PR fluff?
>>7585806
The metal lattice itself weights 0.9 kg/m3; they're not counting the air between the metal bits, since there's no closed pockets in it.
It's the same reason that when weighing, say, a gold ring, you don't also have to count the air encircled by the band.
>>7585812
his point is that it should float.
>>7585819
And it would, if you filled it with vacuum and enclosed it in a shell of negligible mass so the air couldn't get in.
Post your favourite things out of all the maths you know
>>7585741
mine is the rotation matrix, maybe you should look into it
Fucking triangles
Rational Trigonometry
you guys like Math? i need help with answering these homework questions on the AC Factoring method. if anybody is willing to give me the answers i will be most greatful.
>>7585732
For fuck's sake.
You are not asking for a hint, not even to have us solve one to give you an example of the general method, you are literally asking us to give you the answer.
Fuck you, anonymous poster with clearly no real appreciation for math and science. I hope you fucking fail.
>>7585732
Wut you mean like factoring a polynomial?
Axiom of Choice factoring method? Every surjective function has a right inverse.
