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Archived threads in /sci/ - Science & Math - 189. page

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Hi everybody! I would like to share how YOU can look for exoplanets with a videogame:

https://youtu.be/Dwh4XEYDuOA?list=PL3RiFKfZj3pv1ZqpFxuZinoGtUGEOankw

Have you already played the game?
7 posts and 1 images submitted.
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>>9102008
Does it work on GNU?
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>>9102008
I can't understand what the fuck this retard is saying. Why in the fuck are English speakers the only people on fucking Earth who give a shit that they pronounce other people's languages correctly and understandably and everyone else talks with such a lazy, thick accent it may as well not even be classified as English?
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>>9102066
The turd, I mean hurd, can't run shit...
It might run on Linux + wine tho...

How the fuck is p=np one of the biggest math problems ever ? Can't n just be equal to 0 so that it cancels out and it's just p=p ?
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unsurpassed originality in this joke, OP

next you're gonna solve the Schrödinger equation, I know
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isnt it true that if you fail at solving p=np the first time you will never solve it
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I intend to pursue Electrical Engineering in university in California.

I am neither the best nor worst student. My SAT was 1270. How much should I study?

I received a 3 in AP Calculus AB and have no Physics background. I have been told that this major is highly difficult. What can I do to prepare??
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>>9101775
Getting accepted will be difficult unless you have the correct skin color. Difficulty depends on your personal effort vs. Party Life Expectation.

Always find a buddy in every class who looks like a geekmonster autist. Meet with him to do every homework together and in return be his only friend with limitations.
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>>9101788
I personally haven't attended a party, so I do not believe that it is likely that I will attend one in college.

I am Indian (Asian). So, I don't believe that skin color will be to my advantage.
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>>9101775
>How much should I study?
enough to pass exams or enough to satisfy your own interest in the subject. Whichever one is greatest.

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where the fuck can i torrent medical textbooks
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>>9101686
hospital wifi
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>>9101693
ayyyyyyy lmao
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>>9101686
Bibliotik. Once you get in don't forget to download and seed audiobooks to keep your ratio up!

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What does /sci/ see in this man? I see accomplishment.
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>>9101462
/g/tard + slave to ideology
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>>9101462
I see the master techno communist. Dream on, comrad. The capitalist pigs will soon pay, electing Trump was a success so our first step is complete. Now we wait and prepare for step 2.
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>>9101476
What is the step two? And wasn't the CIA behind the Trump election?

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why are the accretion disks for black holes always depicted as a disk? would the accretion of matter not occur as a sphere around the black hole?
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As it collapses under gravity the angular momentum is conserved - this means a large thing spinning slowly becoming a smaller thing must spin more quickly. As it spins more quickly it starts to flatten out into a disk - because stuff at the edges is pushed out.
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a ball spinning fast enough turns into a disk
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>>9102701
>>9101495
So what determines the orientation of the disc?

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Which interpretation of QM is correct? And consequently, which cosmological model makes the most sense (big crunch, heat death multiverse)?
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>>9101425
We don't know which one is correct, and heat death seems the most likely but we still have a lot to learn before we know anything like that for sure
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>>9101425
As you can understand from the word "interpretation", the answer is not clear, and it might never be. Right now, which interpretation you choose to accept depends on your personal views.
Which principles are important to you in a theory - determinism? realism? locality? non-contextuality? Do you want the theory to be as simple as possible? (and what exactly do YOU count as simple?)
Answer these questions and you've pretty much chosen your leading interpretation.
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>>9101470
I want to know which theory gives the most accurate description of the real world.

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How do you read research papers?
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With my eyes.
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My mom reads them to me.
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>>9101331
Turn the paper upside down, and read as normal.
Makes the reading hard enough to be interesting the whole way through.

I am torn between whether or not this is complete bullshit propaganda, or if it's factual. What do?
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>>9101097

why don't you read the scientific papers for a start?

notrickszone.com/skeptic-papers-2017-1/
notrickszone.com/skeptic-papers-2017-2/
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Factual.
But like anything, it's used by ignorant marketers to make stupid trends and sell unrelated products and do anti consumer moves with GW as their shield.

Same with environmentalism.

Both are factual and very important, but the general public is literally too stupid to do things right.

Remember thst these people are mainly millenial hipsters that "love green movments" , hate consumerism, but yet they drink starbucks and have the latest iPhones
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>>9101119
I have read way too much I think most of it is bullshit, i can't be sure when there are plenty of papers that show contradicting trends. both sides seem to be completely biased towards confirming their position

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Hi, i know this is abit off topic but i figured its related to the medical field.

Ive just been perscribed protopic, its a strong cream for exzma but the 0.03 is just for children and i should be taking the 0.1%. I have a few questions:

Does the percentage mean that 99.97% of this cream is just a kind of netrual patroleum jelly or something and the other 0.03 is pure Tacrolimus (in this case).

If i apply 3 times as much, will it have the same effect? if will it just stack on top of each other and the cream at the top wont actual make contact with the skin.

If a condition can be cured by a 0.1% cream, will a 0.03% cure it but 3 times as slow? or is there like a borderline of strengh that needs to cure it for example anything below 0.05 will have no effect. Or is it different for every condition.

Thanks for any answers :)
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>>9101032
Just use what you have been prescribed retard.
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>>9101051
in my case its an extreamly rare condition, its not like the doctor knew what they were prescribing and the dose. Im the one that suggested protopic. So if i just follow what i been perscribed its kind of just the blind following the blind
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>>9101057
>blind following the blind
>DOCTOR = blind
>CUSTOMER = blind
>DOCTOR = CUSTOMER

hmm

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What If I take a very large tank of water, large enough that adding a small drop of water would increase its level by less than the Planck length?
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>>9100912
So your tank is 1.2 million million km across. Level would not increase (< Planck length).
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>>9100912
They use this kind of effect for building telescopes, adjusting on certain wavelengths.
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>>9100912
Seems to me that at those scales, graviational effects would be dominant.

You'd struggle to make your Planck length measurements over the noise of all the fusion you've just caused.

Is it possible that the language you learn at birth determines your brain's ability to comprehend certain topics?

For instance, there is some Aboriginal tribe or some shit that only talks about locations absolutely, not relatively. As in they say "my North hand" instead of "my left hand" is they are facing East. And they have superior spacial awareness of where they are geographically compared to people who don't speak that language. Inversely, people who aren't taught any language are permanently mentally deficient. This has happened with abused children locked up in basements unfortunately.

Could we engineer a language that imparts upon its speakers superior knowledge of rational argumentative techniques, mathematics, and any other number of topics? Would it be worth specifically engineering such languages for the purpose of sculpting our society into a more enlightened one?
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>>9100837
>As in they say "my North hand" instead of "my left hand" is they are facing East
Oops, West*
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>>9100837
I would say that it's a tradeoff between abstraction and situational ease of use. Some abstractions allow for better comprehension of some topics, but they also make the language more complex and difficult to learn.

Your example of the Aboriginals is one example. The most used spoken languages all use "left hand" or something similar, but then you add the complexity of "my left your right" and "why do mirrors flip left and right??"

Some of my language teachers have also noted similar cases regarding gender. My language does not differentiate pronouns for genders. Then comes along a foreigner kid, and they allegedly have to know the gender of every living person or animal in a text just to express it in their heads, even though the language they are learning does not need it.

Clearly in both examples one language is situationally better than another and in some situations worse, as the abstraction also conveys less information. However, generally there should be no large obstacles for comprehension, as spoken languages are all very extendable. Words for directions and gender-neutral pronouns can be defined if necessary. For raising superhumans, I guess you'd want to teach them various different languages.
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Yes, of course. The brain is plastic and if reinforce the learning of some "paradigm" from early on, the brain becomes really good at working within that paradigm.

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Holy shit, I just realized I unironically fell for my country's "Science will bring progress" propaganda. What do I do now?
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tell the next science man you see that he has a big stupid face n that he should shut up.
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I don't know how many times I heard "You will most likely live forever with future tech kiddo, but me, I must die."
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It will bring (((progress)))

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What is the most interesting experiment you've reproduced in your lab/room/etc ?

I just confirmed with my own eyes the wave–particle duality by reproducing the double-slit experiment.

But, I'd need a single-photon gun to confirm quantum superposition...

Do you guys think quantum superposition confirms there is a 5th dimension? (i.e. all physically possible time lines exist)
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no body cares?
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>>9100772
Self contained mice simulation pods...
I wanted to see if I could fool them into thinking they were running outside...
Mission success. They chased virtual cheeze for an 15 minutes followed by a cookie...
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>>9100988
kek

>>9100772
noice

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What are some cool topics that seem hard but once you learn them they're surprisingly easy and straightforward, but were just intimidating to people unacquainted with it?

For me the biggest example of this was set theory and propositional logic in university. I had never really seen it in high school but was aware of these symbols and vaguely aware of the concept, then all of a sudden they had these weird ass fucking symbols and we were actually doing it:

>A ∩ B
>{ }
>A ⊆ B
>A ⊄ B
>a∈A
>x∉A
>O
>↔
>∀
>∃

And they weren't even hard to understand so it was just a mind blowing fun as fuck class with massive useful levels of abstraction. Anyone else have experiences like this in any topic of science or mathematics where something that looks scary as fuck ends up being easy and fascinating?
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>>9100719
Senior level university physics student and I still don't know what half of those mean.

In order, me guessing:

>A intersection B, so only where the two sets match up is in the new set. I think that's how to explain that.

>A set

>Uhh, no clue. Looks like a rounted less than or equal to, but for sets haha.

>A isn't in B at all?

>a as a subset of A?

>x isn't a subset of A?

>shit. don't remember

>???

>???

>wtf
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>>9100723
>A intersect B
>a set
>A is a subset or is equal to B
>A is not a subset of B
>a is an element of A
>x is not an element of A
>I'm gonna presume this is supposed to be O, the empty set
>biconditional (iff) logical operator
>universal quantifier
>existential quantifier
you oughtta study this stuff, my guy
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>>9100723
>Senior level university physics student
Dude what

You're clearly smart so go buy any book on set theory or propositional logic and skim through it and your mind will be blown by how cool the topic is lol it allows you to express very complicated logical concepts and used set based reasoning in a very compact mathematical language. I don't know how you can not know these as a senior level university physics student but:

>A ∩ B
A intersect B i.e. "the set of elements in both A and B"
>{ }
Yeah just a set, in this case an empty one. One like {1, 3, 7} would be a set containing 1, 3, and 7
>A ⊆ B
A⊂B means "A is a subset of B" meaning "every element of A is also in B" and in this case A ⊆ B with the underline means "every element of A is also in B or they also might be equal sets" with the lack of an underline typically meaning a strict subset meaning they can't be equal
>A ⊄ B
A is not a subset of B
>a∈A
a is an element of set A
>x∉A
x is not an element of set A
>O
This copy and pasted wrong, I think it was meant to be the "empty set" symbol O oops
>↔
Typically used as P ↔ Q meaning "proposition P is true if and only if proposition Q is true" or in other worst "if P is true then Q is true, and also if Q is true then P is true"
>∀
This is typically used like ∀ x∈A i.e. "for all elements x in A", then you give a property for instance "for all elements x in A, function f is greater than 2" and then you can use set builder notation to build sets containing this property for instance {b∈B | f(b) > 2} which means "the set of all elements b in set B such that f(b) is greater than 2"
>∃
"There exists" which is used in propositional logic for instance "If there exists an element a in set A such that f(a)>2 then Q" i.e. ∃ a∈A, f(a)>2 → Q

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