Archived threads in /sci/ - Science & Math - 1206. page

>animals have rights
>it's wrong to kill animals for fun
>animal experimentation needs to stop!
i hate these hippie faggots

we need to take care of our environment but the whole gaia na'avi "dude, humans are a disease like that guy said in the matrix! lmao" thing is a meme

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life isn't worth perpetuating or conserving.

>>8478139
Candidacy for what?

Probably stop shitposting and collect yourself though.

>>8478140
materials chem

Sit down and relax and clear your head until about 30 minutes before hand when you start to get into the right mindset

goodluck bro

>>8477942
>nth repost of retarded garbage

>>8477945
how is it retarded garbage. came across it for the first time and I legitimately want to know before I go trashing it on Facebook.

don't want to post the wrong answer and get btfo

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>>8477942

N=1 :)

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>>8477865
You missed a solution you absolute fucking brainlet.

>It's another interpreting P vs NP as an algebraic problem episode

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lol Christ I'm a moron, I just remembered k=1/R. So smaller spheres have much larger curvature and visa versa. sorry /sci/ I din't need you after all.

What a fucking retard...

>>8477856
Why +4? I'd just do (rcos(t),rsin(t),0)
Differentiate twice to get -(rcos(t),rsin(t),0)
Then the curvature is
1/sqrt(r^2(cos^2(t)+sin^2(t))=1/r
So the curvature has an inversely proportional relationship to the radius, and therefore to the circumference. This makes sense since a large circle starts looking like a line locally.

>>8477815
because based on projections if even 1 civilization went space age and began colonizing, assuming they got a headstart of just 10,000 years on us, they should be all over the place and we should be detecting radio signals from their vast empire

the fact it's completely quiet out there is spooky, to say the least. it implies we're the only ones because the odds of finding a race at our exact level of technological advancement is miniscule.

>>8477815
Can someone who is smarter than me chime in and answer this: if a civilization on one edge of the galaxy could broadcast a radio signal strong enough that it would reach earth, would we even be able to recognize it as something not natural? or would it be so degraded it would be indistinguishable from the rest of the noise in the universe?

>>8477815
>that image
>Central Bulge

LMAO

Idk. Why is Cocoa so cute?

>>8477803
Green Tea

>>8477803
You can thank Galois and the early 1900s revolution in formal logic and foundational mathematics.

>>8477791
Seeing as how the ISS is much further up than the plane and thus the light from the ISS has to pass through a lot more atmosphere, that's probably the wobble your describing.

The whole reason we put a telescope is orbit was to eliminate artifacts caused by the atmosphere.

>>8477802

Thanks. Is there a reason, though, why the 'wobble' seems significantly more pronounced that the degree to which stars 'twinkle', or am I imagining this?

it is impossible to see the ISS if its going past mach speed over the earth.

sage

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wrong pic

meant to post this

Can't speak English, speaks fluent 4chan.
I would hire you in a second.
Good luck and may God, the REAL, Christian God, be with you.,

>>8477499
read the sticky and then jump off the tallest building on campus

>>8477391
If infinite dimensions existed and they planned to destroy us all as merely finite beings they would never get to us.

Does anyone else cringe when brainlets misuse the term dimension?

>>8477391
Lets suppose thereare infinte universes. Then there is a universe where santa exists. Then there is also a universe where a Santa exists that can travel through universes. Therfor Santa exists.

it's like this: you have a map in front of you where you want to locate an object, you can guess where the object is with some probability. So you draw a large circle somewhere from your calculations. Then new info comes up and your new map is smaller, so you redo your calculations and get a smaller "more precise" circle. Basically the new info you got helped you in locating your object by shrinking your search area.

>>8477296
It can give you an understanding of how unintuitive probabilities are at times.

e.g.
If a city has 1000 taxicabs, and 100 of these are green, the rest are yellow.
A person is hit by what is reported as a green taxi.

When we check this person in similar light-conditions we find they correctly identify the color as green 90% of the time.

Let's enter these into the equation:
P(B) - probability of correct identification (=0.9)
P(A) - probability of being a green cab. (= 0.1)
P(B|A) - probability of identifying correct given green cab.
P(A|B) - probability of green cab given identified as green.

So; What's the probability the cab that ran over the person was really green ?

>>8477328
Ps. I have here also assumed they were 90% correct for the identification of yellow cabs too.

Which gives us the equation:
P(A|B) = (0.9 * 0.1) /0.9 = 0.1, or 10%

For a twist; let's say yellow cabs are correctly identified 99% of the time, and green cabs are identified correctly 90% of the time.

This changes the equations a bit.
P(B) = identified as green.
P(not B) - identified as not green.
P(A) - Green (0.1)
P(not a) . not green.(0.9)
P(B|A) - identified as green, is green. ( 0.9)
P(B| not A) - identified as green, not green. (0.01)
P(not B | A) - identified as yellow,, is green (0.1)
P(not B | not A) - identified as yellow, is yellow (0.99)

P(A | B) - is green, identified as green (P = ?)

>>8477249

Depends? I own it, I would give it 10/10 at the time that I read it.

It is one proof, and it goes over it with extremely excessive commentary and history of mathematics leading up to his proof. At the time I read it I had not taken a discrete mathematics class, and it blew my mind.

If you are an edgy high-schooler or a freshmen undergrad definitely read it, it will inspire you to be more interested in mathematics. It won't help you with reading/constructing proofs in general though.

Anything related to Hofstadter is good.

>>8477262
so it's possible that if i read this it might spark a love of math?

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>>8477249
>i

This isn't a text message faggot.

>>8477204
>to start a Computer Science degree

I am so sorry

>>8477204
English, seriously. Most code you are going to see in the wild is going to be written with an English speaking audience in mind. Variable names will typically be in English as well as explanatory comments. Your English seems to be fairly good though, but more fluency will help.

On the computer science side of things I would recommend trying to become very comfortable with one relatively modern programming language like Java, Python, or C if you want to start programming in hard mode.

Also, if your university has a programming club I would recommend joining it from day one. Everyone I know that took programming club even moderately seriously landed $100k+ jobs right out of college.

Good luck!

>>8477204
> to start a Computer Science degree
Nice bait.

>>8477112
Dumbshit, and probably more tasteless than "normal" water.

Only useful if you don't have a source of clean water. And/or you're some yuppie sucker who tries too hard

>>8477115
Bottled water is still better than any other junk bottled beverage if you must buy a drink.

>take bottled water
>pour into a glass
>it's no longer bottled water, but still tastes same
>experiment confirmed, j/k

There's a distinct difference between city/tap and well water. I have well water and when I'm in a city the water literally stings my nose and tastes like I'm drinking from a pool. After living in the city for a while I noticed I became acclimated and could no longer tell the difference between city and well water.

the younger ones are on the top

>>8476906
F is the youngest, G is probably the oldest as A looks like an intrusion into older layers

the older one are on the bottom