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Archived threads in /sci/ - Science & Math - 145. page
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If two clocks show a different time, how do we know which one is right?
>>
>>8349190
Internet time
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>>8349190
just take the average
>>
Time btfo?

Allow me to ask another question;

If a ruler is against a wall, does the ruler measure the wall or does the wall measure the ruler?

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What is the most interesting field or subject in all the sciences to you? Go wild, and don't be afraid to say corny shit.

For me, personally, it is androids. Watching that one youtube video of an early AI model speaking to others was chilling.
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>>8349056
There are a lot of discoveries to be yet made.
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>>8349056
>most interesting field
>androids are a field of science
>>
cognitive science and neuro science. also artificial intelligence. i'm fascinated by the human brain

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Tips for mastering classical mechanics?
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>>8348946
Whatever the angular inertia of the flywheel your considering, its not enough.
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>>8348960
I'll keep that in mind
>>
>>8348976
>That's a nice Lagrangian you got there
>You even have the right amount of coordinates!
>Oh wait, I see you forgot to couple your equations of motion

Every goddamn time.

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It's me again. I talked to my professor today and told her how easy calculus has been for me so far and of my doing all of her board examples in my head.

She was impressed. She asked if i maybe wanted to give the class a review on the product rule, which is my specialty, during the next tutorial session.

One week into calculus and my professor is already asking me to lecture.

mfw inferior minds are coming to class at the professors behest to bask in my brainwaves
>>
>teacher's pet
haha nerd
>>
Not sure what you expect, but /sci/ bait usually needs -1/12 in it somewhere
>>
>>8348875
>product rule

This is trivial you fucking dweeb.

>(fg)'=f'g'

NO ONE here finds this impressive.

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I've got a uni assignment due in two hours, that requires me to solve questions using matlab. Problem is I have absolutely no idea how to use matlab. Can someone please help me out here?
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>>8348858
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>>8348860
>>
>>8348858
Don't procrastinate next time :^)

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>Hundreds of horseshoe crabs — known as "living fossils" because they are among the Earth's oldest creatures — have been found dead in southern Japan, confounding experts who study the alien-like creatures.

>Horseshoe crabs, known for their blue blood, are a regular summer visitor to tidal flats in southern and western Japan, including one near Kitakyushu city where they lay their eggs.

>Some invariably die in the process, but this year a local conservation group...
>>
Thanks global warming!
>>
rip crab bros ;_;
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>>8348752
OP, Do they have any idea what killed so many of them?

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"But what are dark matter and dark energy, teacher?"
"Uh...we don't actually know"

Should science become more humble in its assertions, or at least in how it popularizes them?
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>>8348722
Popsci is and always has been cancer
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>>8348722
>>>/worship/
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>>8348722
But admitting the limit of your knowledge is a sign of integrity, not the other way around.
Any cultish belief would instead replace "we don't know" with a bunch of bullshit.

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>>>/pol/89019860
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>>8348529
>/sci/
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>/pol/ has more larping than /x/
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OH SHIT
DON'T SAVE THIS OR YOU'RE GONNA GET V&

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Someone that knows probability, tell me what I'm doing wrong.
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So if we have 500 fish in the lake, and 50 are already tagged, then the probability of catching a tagged fish is 50/500.
Then catching another tagged fish is 49/499 and a third would be 48/498. So in general would it just be 50*49*48/(N)*(N-1)*(N-2)?
>>
Or would it be N choose 50 / 50 choose 3?
>>
(* is multiplication)
First of all, your answer is not between 0 and 1, it is not a probability.
We have 50 tagged (white)fishes and N-50 untagged fishes. Probability of catching a tagged fish is 50/N and not catching a tagged fish is N-50/N. In the second attempt, catching a tagged fish if we have already catched one is 49/N-1 and catching a untagged fish is N-50/N-1. And catching a tagged fish in the second run, if we haven't catched in the first attemp, is 50/N-1 and catching an untagged fish is N-51/N-1. So we should continue like that but we have an information...

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How does /sci/ perform when presenting their ideas in front of peers?
>>
terribly because we're all autistic
>>
I secretly love giving presentations, no feeling is better than getting the audience to laugh with some offhand joke or turn of phrase. I wish I could do it more often.

>>8348287

I'm an autistic mumbling mess in one-on-one conversation though, it's really weird.
>>
I give extremely good presentations when I have time to prepare, because I can just practice until it's like a script. Any presentation that requires me to ad lib results in me getting anxious though.

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I see many IQ threads here every day. I really wish we could have a certain way to verify the IQ’s of historical figures like Beethoven, Shakespeare, Michelangelo and Einstein. I really bet that many of the greatest geniuses of history would score under 140 points (maybe even lower than 130-135 points), and I would like to see the reaction of the Mensa people, or of people who put IQ scores above everything else.

Beethoven, for example, had problems with simple math problems, and much of his production was fruit of hundreds of drafts and corrections: he used a lot of paper, slowly modeling the structure of his music. Yet some estimates put his IQ on the house of 1651 points.

Da Vinci had difficulties with algebra, and his understanding of math was mostly related to simple concepts of geometry. His “inventions” were mostly impossible to be created, and were mostly works of the imagination. Yet the estimation of his IQ is 180.

Shakespeare never did anything out of the real of words, and his works don’t show any especial interest in mathematics or even in the scientific questions of his day. His IQ estimation? 210 points to some researchers!!!2

I don’t doubt there is a lot of truth in IQ testing, that there is a great correlation between mental capacities and the results one gets in such testing, but I doubt that many of the people considered to be the greatest examples of what humanity is capable off would achieve outstanding results. I think we would get a lot of giants scoring “only” around the house of 125-130 points.

1: http://www.iqcomparisonsite.com/cox300.aspx

2: http://www.eoht.info/page/IQ+tables
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>>8348099
Have you considered that maybe those estimates aren't reliable (or full of shit)?
>>
>>8348109
>Have you considered that maybe those estimates aren't reliable (or full of shit)?

I am sure of it.
>>
It's a meme for brainlets. I used to get mad about this too. I felt like IQ autistics "stole" my idols and belittled their work by conscripting true genius into this pseudo-scientific smegmafest. Then I realized that I was the fool for even wasting my anger on these people.

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http://content.time.com/time/magazine/article/0,9171,944914,00.html

>Another Ice Age?
>Monday, June 24, 1974

>In Africa, drought continues for the sixth consecutive year, adding terribly to the toll of famine victims. During 1972 record rains in parts of the U.S., Pakistan and Japan caused some of the worst flooding in centuries. In Canada’s wheat belt, a particularly chilly and rainy spring has delayed planting and may well bring a disappointingly small harvest. Rainy Britain,...
>>
>woaw bruh those scientists used to tell us the Rutherford model was accurate and then they changed their mind, that's proof they can't be trusted
>>
Different political agenda, different bullshit
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>>8348002
>implying the Rutherford model was highly publicized by the media before it was replaced

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How to quickly factor n-degree polynomials?
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>>8347910
not possible in general in a reasonable amount of time, sorry
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>>8347938
got a proof for that?
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>>8347910
why would you want to "just" factor polynomials without finding roots?

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CS week 3
>go to obligatory group work class
>mfw they force people into study groups in uni

>everyone has to analyze an algorithm in groups
>ezpz
>one guy doesn't get it
>I already don't like this guy, he tries to take control and is ignorant

>some other group mates try to explain it
>he keeps implying that he understands it followed by doing it wrong again
>because of his retarded pride, he can't handle being weak in areas
>mfw he yells at me "ANON, WHY DON'T YOU PARTICIPATE IN THE GROUP" to guide everyone's attention away from his continuous acts of failure

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Is there some way I can accelerate the inevitable fact that he is going to drop out?
>>
Kill him.
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>>8347804
Math week 9934834983

>No group work at all

Feels good. Get a good degree, faggot.
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>>8347883
Yes, do it.

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or is he really famous?
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>>8347710
>or is he really famous?
That's for sure.
>>
>>8347710
That man whose visage you posted is none other than the great genius Neil DeGrasse Tyson. His mind-boggling body of achievements in number theory and cosmology will forever live on in mathematical legend.
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>>8347890
>cosmology
>>>/x/

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This is impossible. The gap between Programming 1 and Programmin 2 is ridiculous.

My first assignment is to make an array of 10 bathroom stalls and have a person (x) fill out a center spot randomly, then fill out another spot either to the left or the right near the middle randomly, etc etc until all the spots are filled.

The second question is to make an arrayList with sequences in order to append/merge/merge without copying two arrayLists.

The third question is to partition any given number. I actually managed to code this one, but instead of my output...
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>>8347669
What language?

Try solving it on paper first then transfer that to code
>>
>>8347695
Java.

What do you mean solve on paper?

I feel like I don't know anything. Literally everything I need to do I've had to look up on the internet where people pull RANDOM SYNTAX OUT OF THEIR ASS

like WTF is a sequence?!!??!?!?!!?!?!?!
WHY can't I just print out a sequence? Why does EVERYTHING have to result in an error?

Why am I so shitty at this? How is it that other almost IMMEDIATELy know how to solve a problem.

Like holy shit I can't fucking work in this...
>>
>>8347695
Professional programmer here. Everytime I've tried to lay out a problem in paper I've failed miserably.

Programming is all about having good intuition for problems, being able to shit out a base program that supposedly does what you want it to do and then you execute it to see if the results are what you want.

When it doesn't do what you want you put a billion breaks in the code and manually check how every variable is behaving.

That google movie where the programmers were scribling...

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just wondering?
>>
No, i never read that book in a physics class, i never even heard of it, it probably wasn't that important
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>>8347576
Actually got that from my granma for my birthday last year, interesting read but for the most part just over explanations of concepts youll understand well enough. I mainly have it as a bit of a "I've read principia"
>>
>>8347595
If you are not sarcastic, that is Newton's book. The one with:
>Gravity
>Calculus
>Laws of motion

No big deal

However, it is written in Latin and notation is strange.

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What does /sci/ think about legalizing drugs like marijuana?
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>>8347115
1. We are not a monolith
2. I say legalize it, and allow employers to test for whatever drugs they want.
>>
>>8347115
legalize all the way
>>
>>8347115
Just realize it, and legalize it

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For those of you who are in relationships... Does you partner study or have a career in STEM? If not, what do they think about your field of study or career?
>in b4 REEEEEE
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>>8346940
I'm doing PhD in EEE. My gf is doing PhD in industrial design. She thinks I'm a retard who can't comprehend anything about real life.
>>
>>8347084
>PhD in industrial design
Why the fuck would you do a fucking PhD in it and not just work?
>>
>>8346940
Im doing a masters in astrophysics and shes doing biology. Asks me to look at a graph and part of me dies each time.

Name 1 discovery in physics made after 1945 that has affected the lives of ordinary people.
>>
Most of them.

I am going to take your bait question literally and name exactly one such invention
>the laser
>>
>>8346877
Name another one.
>>
chaos in dynamical systems, for its influence on weather forecast

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>Using the
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>>8346772
Gemini masterrace here.
>>
>>8346772
>0.042
>>0.042
>>>0.042
That's, like, non-existent
>>
>>8346772
/x/ RIGHT AGAIN, /sci/ BTFO.

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Is $\frac{1}{\infty}>0$?
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>>8346746
no, but:

1/x when x->oo

is
>>
>>8346746
The limit tends to zero but isn't zero so yes.
>>
Lrn2limit, buzzybee

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Hi /sci/,
Do any of you know if this makes sense?

It's not as easy as googling it. Or maybe it is and I'm stupider than I'd thought.
>>
MD here, he's wrong
>>
>>8346557
He is? How so?
>>
Bump. This is pretty important. I'm voting Bernie but Clinton is gonna be the next president

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Is natural selection and the survival of the fittest still in a thing for mankind in modern society?
>>
Yes. All that has changed is the definition of "fittest".
>>
Yes. Also consider that it's not just about volume, but also about social classes.
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>>8346540
Yup. The only thing that has changes is what traits are selected for.

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Is love a meme or is there science behind it?
>>
>>8346539
Let us stop believing that carnal love is high and noble and understand that any end worth our pursuit -- in service of humanity, our homeland, science, art, let alone God -- any end, so long as we may count it worth our pursuit, is not attained by joining ourselves to the objects of our carnal love in marriage or outside it; that, in fact, infatuation and conjunction with the object of our carnal love (whatever the authors of romances and love poems claim to the contrary) will never help our worthwhile pursuits but only hinder them.
>>
You know what's a meme?

"Is ___ a meme?"
>>
>>8346544
pointing out memes is a meme as well
kys

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Is it me or are you guys too naive about the future? I don't understand how you people think a "singularity" will happen, or how interstellar travel is possible
>>
>>8346530
I don't understand why do people just keep referring to "singularity". singularity is anything and everything that is singular in it's existence in some way. like gravitational singularity is the single point in spacetime where gravitational forces are infinite...

what you are refering to is Technological singularity, so at least if people could spell it out, or just say Super AI or something... gosh, ambiguity like this triggers me...

anyway, People can only be this naive about stuff...
>>
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>>8346530

That's okay...you're young and stupid, and take the huge leaps forward in technology in the last couple of decades for granted. You think the internet and flat screens and computers you could put in your pocket and streaming shows and games and music, etc, were always there and that garbage like vinyl and video tapes practical special effects and 2D animation in movies and sending humans into space instead of badass robot probes were something we voluntarily put aside and something worth missing, like...
>>
>>8346799
if you look at history, technological booms are not uncommon, followed by a few years of quite time. It takes an important discovery to cause such a leap in technology and we don't get these kinds of discoveries every day. Not to mention that interstellar travel for example is a huge problem even if you had infinite fuel and have been able to approach speeds of light. you need FTL speeds for that to even be viable.

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Can entanglement exist across time between the same particles?
>>
just a baby to quantum physics, but if i had to guess, i'd say that IF it happens, it only happens on a VERY small scale, on the order of nanoseconds or smaller
bumping because i'm also interested
>>
>>8346423
Yep, it's been done a number of times and is one of the main mechanisms behind quantum information.

What's that drawing supposed to be?
>>
>>8346618
This is interesting, How would you do such an experiment? I though you need immediate access to both particles you are trying to entangle. so how can you entangle one with the other before you entangle to other at all?

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So, /sci/, I want you guys to consider this.
1. There exists sets X and Y
2. There exists a number x, x is an element of X{R|1<x<2}
4. There exists a number y, y is an element of Y and is an element of {R|1<=y<=2}
5. X is a subset of Y
6. ∴X implies Y AND x implies y
7. ∴ 1 and 2X,1 and 2 Y
8. 1 and 2 are NOT an element of X, and ARE an element of Y AND 1 and 2 are elements of Z
10. Set Y contains exactly two more elements than set X.
11. ∴Y>X
What do you think, /sci/? Is it proof of different levels of infinity, or that infinity...
>>
>A proof for infinite sets that contain more elements than others?
$\mathbb{N}\subsetneq \mathbb{N}\cup\{\mbox{banana}\}$.
>>
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>>8346328
Fuck off latex piece of shit. This worked fine in the preview.
>>
>>8346334
banana

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This, my friends is the SINGLE proton. It is the basis for all the elements.
>>
>>8346207
K
>>
>>8346207
Now, observe as two become one. You could say they have DOUBLED. Behold, diatomic Hydrogen.

But we can go further......
>>
>>8346210
no its H+

huehuehuehue

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This is probably a retarded question for this board, but it seemed like it was most closely related to /sci/, so I'll post it anyway.

I was a moron and pushed my pencil into this railing, and as retarded as it sounds, I want to know if there's any surefire solution to get it back that doesn't involve me doing something stupid like flushing it out or using special equipment no one would have.

The tip of the pencil is approximately 6 inches into it, and the diameter of the pipe I'd guess to be about 4 inches. The white circle in the tube represents...
>>
>>8346171
you're fucked.

try shoving in more pencils
>>
Coat hanger?
>>
>>8346171
jizz into the pipe, making sure to hit the pencil, and wait for it to dry. then you can just pull it out

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