Archived threads in /sci/ - Science & Math - 347. page - 4ChanArchives : a 4Chan Archive of /sci/

Anonymous
2016-02-06 11:57:05 Post No.7837947
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Anonymous 2016-02-06 11:57:05 Post No. 7837947 [Report] [View thread]

What is "spin" in particle physics?

Each time I ask a physicist, they start off with confidence but end up confusing themselves.

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Anonymous 2016-02-06 12:00:15 Post No.7837952
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Anonymous 2016-02-06 12:00:15 Post No.7837952 [Report]

>>7837947
Are you dumb or what?
Is the direction of which a particle is spinning.
Imagine when you spin a ball, or how the earth spins, it's exactly the same.

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Anonymous 2016-02-06 12:25:57 Post No.7837988
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Anonymous 2016-02-06 12:25:57 Post No.7837988 [Report]

>>7837947
The Spin(n) group is a double cover of SO(n).

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Anonymous 2016-02-06 12:27:20 Post No.7837989
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Anonymous 2016-02-06 12:27:20 Post No.7837989 [Report]

>>7837988
either wrong or I don't understand it or both.

Anonymous
2016-02-23 13:00:24 Post No.7881523
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Anonymous 2016-02-23 13:00:24 Post No. 7881523 [Report] [View thread]

What is your opinion on Neil DeGrasse Tyson?

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Anonymous 2016-02-23 13:01:54 Post No.7881524
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Anonymous 2016-02-23 13:01:54 Post No.7881524 [Report]

>>7881523
Better than Bill Nye

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Anonymous 2016-02-23 13:03:35 Post No.7881527
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Anonymous 2016-02-23 13:03:35 Post No.7881527 [Report]

le rapist face

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Anonymous 2016-02-23 13:12:54 Post No.7881541
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Anonymous 2016-02-23 13:12:54 Post No.7881541 [Report]

He's fine and probably a pretty smart guy. His job is to explain technical things to the general public, which naturally tends to come off as dumbing-down, and I don't pay much attention to him. I wish there were science entertainment shows targeted at the college level.

Anonymous
2016-02-22 00:27:10 Post No.7877908
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Anonymous 2016-02-22 00:27:10 Post No. 7877908 [Report] [View thread]

I don't like eating. I am too busy, I don't like spending the money, and I don't ever have an appetite to eat anything, ever.

Why can't I just live off sugar, milk and vitamins?

Why can't I just put 1000 calories of sugar with 1000 calories of milk, throw in some powdered vitamins / minerals, and live off of it for the rest of my life?

I would be reaching all vitamin, mineral, macro nutrient, and caloric requirements, so what would be the problem(s) with this diet? What non-imaginary factors am I not accounting for, if any at all?

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Anonymous 2016-02-22 00:28:48 Post No.7877911
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Anonymous 2016-02-22 00:28:48 Post No.7877911 [Report]

fiber, for one

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Anonymous 2016-02-22 00:31:17 Post No.7877923
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Anonymous 2016-02-22 00:31:17 Post No.7877923 [Report]

>>7877908
some tech faggot already figured it out for you
https://www.soylent.com/

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Anonymous 2016-02-22 00:31:50 Post No.7877925
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Anonymous 2016-02-22 00:31:50 Post No.7877925 [Report]

>>7877908
You can (almost)!

https://www.soylent.com/

But it's people.

Anonymous
2016-02-25 04:54:07 Post No.7886355
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Anonymous 2016-02-25 04:54:07 Post No. 7886355 [Report] [View thread]

post what you would consider the bible of /sci/

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Anonymous 2016-02-25 04:57:38 Post No.7886364
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Anonymous 2016-02-25 05:06:31 Post No.7886381
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Anonymous 2016-02-25 05:06:52 Post No.7886382
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>>7886355

Anonymous
a l g o r i t h m s 2016-02-24 03:39:47 Post No.7883502
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a l g o r i t h m s Anonymous 2016-02-24 03:39:47 Post No. 7883502 [Report] [View thread]

How the fuck do I write a sum function for an array that is O(log n) or better? I don't see any other way around it without recursion or looping

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Anonymous 2016-02-24 03:40:40 Post No.7883506
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Anonymous 2016-02-24 03:40:40 Post No.7883506 [Report]

>>7883502
>>>/pol/

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Anonymous 2016-02-24 03:41:08 Post No.7883508
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Anonymous 2016-02-24 03:41:08 Post No.7883508 [Report]

>>7883502
I don't know. You could instead get educated on race and iq.
http://www.amazon.com/Bell-Curve-Intelligence-Structure-Paperbacks/dp/0684824299

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Anonymous 2016-02-24 03:41:59 Post No.7883512
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Anonymous 2016-02-24 03:41:59 Post No.7883512 [Report]

>>7883506
>>7883508
what board am I on

Anonymous
2016-02-23 21:43:11 Post No.7882613
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Anonymous 2016-02-23 21:43:11 Post No. 7882613 [Report] [View thread]

Alright /sci/, I need you to tell me if I can make it into the California Institute of Technology based on muh credentials:
-Currently Senior in High School
-3.4 GPA
-31 ACT/2100 SAT
-Extracurricular Activities: JCL, Science Club President, Founder and President of High School's Chess Club, Academic Team, Film Club, Art Club, History Club (All of these clubs are why GPA is so low)
-At least 4 Stellar Rec Letters
-Can write killer essays
-Lots of AP Classes w/ good grades in most
-Can conjure up sob story about Mother's death, etc.
inb4
Comment too long. Click here to view the full text.

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Anonymous 2016-02-23 21:44:46 Post No.7882617
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Anonymous 2016-02-23 21:44:46 Post No.7882617 [Report]

Not to hurt your feelings, but not a fucking chance in hell.

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Anonymous 2016-02-23 21:46:30 Post No.7882622
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Anonymous 2016-02-23 21:46:30 Post No.7882622 [Report]

Scores are too low. Have you done anything significant? E.g. Won a national award for science, won a robotics competition, etc.

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Anonymous 2016-02-23 21:47:02 Post No.7882623
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Anonymous 2016-02-23 21:47:02 Post No.7882623 [Report]

>>7882613
No. I had a 3.4, 33 ACT, state Tennis player, plenty of extracurriculars and volunteer work, APs and rec letters and I didn't even get into CalPolytech.

And don't write college essays about your mother's death, they don't want to read that.

Anonymous
2016-02-23 20:39:28 Post No.7882410
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Anonymous 2016-02-23 20:39:28 Post No. 7882410 [Report] [View thread]

Conspiracy theory thread

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Anonymous 2016-02-23 23:30:16 Post No.7882878
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Anonymous 2016-02-23 23:30:16 Post No.7882878 [Report]

>>7882410
there are a whole bunch of people trying to manipulate you into discussing conspiracies

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Anonymous 2016-02-23 23:39:04 Post No.7882907
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Anonymous 2016-02-23 23:39:04 Post No.7882907 [Report]

>>7882410
>>>/fuckoff/
>>>/x/
>>>/reddit/
>>>/googlevaguebullshittoreaffirmyourshitmisconceptionsandcompleteinabilitytolookfactsintheface/

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Anonymous 2016-02-23 23:47:45 Post No.7882940
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Anonymous 2016-02-23 23:47:45 Post No.7882940 [Report]

>>7882410
>>>/x/
>>>/pol/

Anonymous
2016-02-22 14:51:50 Post No.7879177
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Anonymous 2016-02-22 14:51:50 Post No. 7879177 [Report] [View thread]

How would I go about solving this? I don't necessarily need to express y as a function of x but the general solution would be accepted.

I understand it's a homogenous equation, I was able to split it up into two separate integrals but I can't see a clear method of integration without it getting really messy.

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Anonymous 2016-02-22 14:54:52 Post No.7879184
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Anonymous 2016-02-22 14:54:52 Post No.7879184 [Report]

>>7879177
their just like fractions you move them around and get xdx= (x+y)dy and you integrate those

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Anonymous 2016-02-22 14:56:53 Post No.7879187
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Anonymous 2016-02-22 14:56:53 Post No.7879187 [Report]

>>7879177
Separation of variables

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Anonymous 2016-02-22 14:58:15 Post No.7879189
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Anonymous 2016-02-22 14:58:15 Post No.7879189 [Report]

>>7879177
do the division
x/x+y, x cancels out. d/dx = y

Anonymous
2016-02-23 22:35:08 Post No.7882752
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Anonymous 2016-02-23 22:35:08 Post No. 7882752 [Report] [View thread]

Is there such a thing as devolution, and is the human species currently undergoing it?

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Anonymous 2016-02-23 22:38:30 Post No.7882762
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Anonymous 2016-02-23 22:38:30 Post No.7882762 [Report]

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Is there such a thing as /pol/ fucking off back to their containment board?

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Anonymous 2016-02-23 22:57:46 Post No.7882794
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Anonymous 2016-02-23 22:57:46 Post No.7882794 [Report]

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>>7882762
>asking a question with support from screenshots of a region that's intentionally crippling itself
>G-GO BACK TO /POL/ YOU SHITLORDS
Every time.

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Anonymous 2016-02-23 23:01:30 Post No.7882799
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Anonymous 2016-02-23 23:01:30 Post No.7882799 [Report]

I have a two legit questions.

Does /pol/ actually believe we can't tell they are from /pol/ when they make their topics?

Secondly, are these topics just troll attempts, or does /pol/ actually expect /sci/ to give legit answers to the pseudoscientific /pol/ topics?

Anonymous
2016-02-23 08:40:27 Post No.7881282
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Anonymous 2016-02-23 08:40:27 Post No. 7881282 [Report] [View thread]

would science progress a lot faster if we barred anyone who doesn't have a 150 IQ and a near perfect academic record?

Hopefully this should get rid of the current publish or perish culture as we have too many shit papers by subpar academics vs quality ones

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Anonymous 2016-02-23 08:49:20 Post No.7881292
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Anonymous 2016-02-23 08:49:20 Post No.7881292 [Report]

do you really think IQ is a satisfactory indicator of one's intellectual abilities?

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Anonymous 2016-02-23 09:51:06 Post No.7881329
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Anonymous 2016-02-23 09:51:06 Post No.7881329 [Report]

>>7881282
>who doesn't have a 150 IQ and a near perfect academic record?
Why don't you just say you have never worked in research, but are fresh out of highschool and just loooove mathematics and want to be a professor?

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Anonymous 2016-02-23 09:52:20 Post No.7881331
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Anonymous 2016-02-23 09:52:20 Post No.7881331 [Report]

>>7881282
there is no progress in science. can you take a course on philosophy of science, instead of displaying your faggotry ?

Anonymous
2016-02-23 01:46:00 Post No.7880634
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Anonymous 2016-02-23 01:46:00 Post No. 7880634 [Report] [View thread]

What does /sci/ think of Christian Science?

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Anonymous 2016-02-23 01:46:56 Post No.7880636
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Anonymous 2016-02-23 01:46:56 Post No.7880636 [Report]

>>7880634
Kek

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Anonymous 2016-02-23 01:47:46 Post No.7880638
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Anonymous 2016-02-23 01:47:46 Post No.7880638 [Report]

I like their logo.

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Anonymous 2016-02-23 01:48:04 Post No.7880642
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Anonymous
2016-02-19 15:57:03 Post No.7871854
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Anonymous 2016-02-19 15:57:03 Post No. 7871854 [Report] [View thread]

If your major had a slogan what would it be?

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Anonymous 2016-02-19 16:02:29 Post No.7871863
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Anonymous 2016-02-19 16:02:29 Post No.7871863 [Report]

Computer science - we don't know why or how it works, we just turn it in.

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Anonymous 2016-02-19 16:06:49 Post No.7871872
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Anonymous 2016-02-19 16:06:49 Post No.7871872 [Report]

>>7871863
That is not Computer Science, that's coding monkey business. Unless you're a trolling fag

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Anonymous 2016-02-19 16:11:47 Post No.7871880
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Anonymous 2016-02-19 16:11:47 Post No.7871880 [Report]

Physics - I'm just trying to get into grad school

Anonymous
2016-02-19 14:44:48 Post No.7871738
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Anonymous 2016-02-19 14:44:48 Post No. 7871738 [Report] [View thread]

Are you enjoying the view ? This is the world you'll be living in if you don't do something about global warming !

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Anonymous 2016-02-19 14:49:44 Post No.7871746
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Anonymous 2016-02-19 14:49:44 Post No.7871746 [Report]

>>7871738
>Meteors
why on earth would the rate of meteors depend on the temperature of the planet?

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Anonymous 2016-02-19 14:50:03 Post No.7871748
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Anonymous 2016-02-19 14:50:03 Post No.7871748 [Report]

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>>7871738
>this tryhard falseflagging

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Anonymous 2016-02-19 14:52:13 Post No.7871753
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Anonymous 2016-02-19 14:52:13 Post No.7871753 [Report]

>>7871746
Because the thinner atmosphere won't be able to stop incoming asteroids. I read it on a journal. So unless you do something about global warming YOU are responsible for the death of thousands.

>>7871748
> falseflag
back to /pol/. we're discussing science here.

Anonymous
2016-02-19 04:48:57 Post No.7871037
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Anonymous 2016-02-19 04:48:57 Post No. 7871037 [Report] [View thread]

Theorem: Calculus is wrong.

For a theory or set of knowledge to be true, it must always give correct results. A failure to do so, at even an instance, invalidates it and will require a reformulation of the theory and procedures.

That said. Lets get the derivative of sinx.

Easy, right?

(sin(x+h) - sin(x))/h as h->0

(sin(x)cos(h) + cos(x)sin(h) - sin(x))/0 as h-> 0

because h->0, cos(h)->1 and sin(h)->0
(sin(x) - sin(x))/h as h->0

so we end up with

0/h as h->0 which is basically 0/0, that is to say...
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Anonymous 2016-02-19 04:50:35 Post No.7871042
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Anonymous 2016-02-19 04:50:35 Post No.7871042 [Report]

>>7871037
kek

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Anonymous 2016-02-19 04:51:06 Post No.7871044
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Anonymous 2016-02-19 04:51:06 Post No.7871044 [Report]

>>7871037
(You)

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Anonymous 2016-02-19 04:55:29 Post No.7871050
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Anonymous 2016-02-19 04:55:29 Post No.7871050 [Report]

>>7871037
>i'll take the limit of sin and cos but forget to take the limit of h in the same expression

is this the new 1 = 0?

Anonymous
2016-02-18 21:41:28 Post No.7870252
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Anonymous 2016-02-18 21:41:28 Post No. 7870252 [Report] [View thread]

http://math.stackexchange.com/users/97378/cleo

Is she officially smarter than Mochizuki?

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Anonymous 2016-02-18 21:42:52 Post No.7870259
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Anonymous 2016-02-18 21:42:52 Post No.7870259 [Report]

>>7870252
Lel I noticed her too. Integration beast. Bitch never gives the proof though. For all we know she could be pluggin 'n chuggin Mathematica.

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Anonymous 2016-02-18 21:48:59 Post No.7870273
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Anonymous 2016-02-18 21:48:59 Post No.7870273 [Report]

well at least this is a different format from the usual autist's threads about "her"

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Anonymous 2016-02-18 21:51:16 Post No.7870279
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Anonymous 2016-02-18 21:51:16 Post No.7870279 [Report]

>>7870252
>take a bunch of weird and unusual functions
>concatenate them and compute derivative
>use different IP to create another stackexchange account and ask to solve the integral
>reply to yourself with the solution
What a troll ...