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Archived threads in /sci/ - Science & Math - 266. page
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File: Focus1.jpg (153 KB, 900x900) Image search: [iqdb] [SauceNao] [Google]
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**Study related**

How do people focus for long periods of time without becoming ineffective?

Other students in my anatomy & phys course can study for hours and maintain composure.

How do I do this?

Is it genetics and upbringing?
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pomodoro technique

p.s. its a protip
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>>8127595
Good breaks, knowing when too much is too much, and self motivation. Rome wasn't built in a day, you need to give it your all several times to see results.
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Watch Mel Robbins' "How to stop screwing yourself over" TED talk. Good lecture on realizing you are constantly in your comfort zone and understanding that you have to break that comfort zone when you can't find motivation to do something.

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our ancestors sure got their dicky sticky.... but yuck man, they didn't have enough homo sapien trim they had to take a step back on the evolutionary ladder?
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>>8136075
You don't know the half of it.
>>
Very interesting stuff

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>>8136075
>at a cost
wouldn't be so sure, neanderthals had larger craniums compared to H sapiens at the time. They lacked the socialization skills according to some studies so perhaps that interbreeding resulted in brains that had the neural organization of H sap with larger volume resulting in smarter people that went on to start civilization.

I'll Begin.

Pic related is the Cayley Table dihedral group of 8 elements (symmetries of a square). This doesn't look like any Cayley table I've ever seen (though I'm new to this sort of math).

It looks as though theyve dropped the header rows and columns, which makes sense as beginning the first rows and columns with the identity makes it clear what the elements are. But what are the red and white little boards above and to the left?

Also, why do we have numbers instead of the typical notation (I've seen r for rotation, s for flip about axis of symmetry, and all sorts of variants of the two, but never numbers)

In fact, there is a lot going on here I'm not familiar with. Can someone help me navigate what is being conveyed here?
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>take Physics I at a community college
>realize I am terrible at lab
>Three test worth 40% of grade
>pre-lecture/lab quizzes worth 10% of grade
>Final exam worth 10% of grade

I just started the class, but assuming I do completely terrible on the lab portion of Physics, can I still pass the Physics...
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Does time actually exist? Or is it just a construct of the mind?
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>>8130395
Depends on how terrible is terrible.

Just add up like .7 * .4 for your 70% on the tests, .8 * .1 assuming you get 80% on the quizzes, .9 * .1 assuming you get 90% on the homeworks, etc all the way down except for the labs, then subtract from .7 (or whatever overall percentage you want in the class) and divide by .3 and you have the percentage you need to get on your labs in order to get that grade.

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ITT: We derive all of mathematics as it was done chronologically, as if we did it.
Holy shit guys, I have this stone and this other one. That makes two stones. We need to make a system for this!
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>>8126948
If we have two stones and then we take one away well only have one stone.
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>>8126948
Today I'll give you one stone. Tomorrow I'll give you two stones. The day after tomorrow I'll give you three stones. The day after the day after tomorrow I'll give you four stones. Assuming we are both immortal and can continue this forever, would you accept the deal?
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>>8126965
Nice try, you're just trying to steal 1/12 of a stone from me, I won't have it.

Sometimes you just want something physical to represent your love for something. Pic related is some math jewelry you can buy (a Hilbert Cube). Anything similar, I'm looking for a necklace or something but any form of math and science is ok.
>>
textbooks do the trick for me
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>>8129264
Here is an Icosahedron.
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>>8129264
These Banach-Tarski balls are quite popular presents in my country. People buy them by the dozens around Christmas. No surprise that Hungary has so many great mathematicians.

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This topic is probably talked to death on here, but I never get a clear answer where I look.

How long would humanity survive on Earth in the hypothetical scenario of the Sun disappearing without a trace? A week? A few months? A decade?

What kind of technology could sustain us longer?
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>>8131882

it'd get pretty fucking cold pretty fast 2bh lad

>not to mention dark as shit
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>>8131885
No shit, but how long could we survive for?

I'm talking about people trying to live underground, underwater, on the surface etc.
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>>8131882
I hate this faggot but he answer the exact same question in this video: https://youtu.be/qF3ejw7JJuc

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Attention all GeoloJUSTS!
I was looking for chert and would like to pick ur brans to see what you know about these shitters I found
The first ROCKtm that I have ill call poo1 view1
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Poo1 view2
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Poo1 view3
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Now poo2 view 1

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Hello /sci/, i'm being sued

I am a male OB/GYN fresh out of residency. 6 months ago I got a job at a private clinic. The patients are largely middle to upper class, and I love my job.

Since i'm a new doctor, the vast majority of the patients I see are for gyno and not obstetrics.

As a male gyno, naturally I get fewer patients. Our clinic has 4 full time MDs, 3 of which are women and me, who replaced a male doctor who was very much loved by the community.

Here is my issue: I'm being sued

As a male OB/GYN, I've faced a lot...
>>
its their word against yours, and everyone knows that trannies are whiny little bitches.

with that being said, your private clinic should be handling everything, not you.
>>
>>8139418
They are, naturally. The thing i'm worried about is because i'm so new, it would be easier for them to throw me under the bus and hire someone new rather than fight this person.

Honestly, what did that patient expect?

They aren't gonna get a pregnancy test, they can't use birth control, they can't get cervical cancer or ovarian problems.

Is this some kind of civil rights martyrdom shit that I shouldn't worry about?
>>
>>8139413
>being sued for discrimination, from a patient who literally did not have the biological parts that I specialize in.
wow that is so ignorant and bigoted op, might want to check your privilege next time instead of resorting to these cis white male patriarchal facts and logic

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What are some methods you have used to increase your IQ?
>>
Do IQ tests until you become a biobot.
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>>8138239
Don't be a faggot and actually do shit that matters like learning now things instead of thinking about your IQ.
>>
I went back in time and fucked my own mother, ensuring that I would have the highest IQ my genetics would allow.

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>scientism

Why do people in STEM have such myopic world views? I thought "because science" was just a thing in general society, but people in physics seem to just as fundamentally misunderstand empiricism and the goals and bounds of science.

Why do people believe that science is asocial and apolitical? Why do they believe that "science" is the only valid form of knowledge? It sends a shiver down my spine when these kids in my classes, who are obviously bright, are so neglectful of the world outside their cozy academic...
>>
>t. brainlet
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>>8137937
Why do you keep making this thread?
>>>/lit/
>>
>>8137946

If we're gonna play this game, I'm an honors physics major in a highly selective program and I do computational physics research with a professor in a world renowned theoretical physics institute.

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Our planet rotates around a star, our sun alongside the solar system just rotates around our galaxycore, galaxies seem to rotate around each other. Assuming there are actually several other Universes, do they rotate too?
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>>8137791
>Assuming there are actually several other Universes, do they rotate too?
Depends first on if the bulk actually exists.
>>
You'd also have to assume that the universes existed in some extra space to be able to move. There's no reason to expect something like that
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>>8137806
why

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What is the science behind how long you last in bed/how many rounds you go for/how you perform?
How long do you last in bed /sci/?
Do you go for multiple rounds?
>>
Multiple rounds? Hah, oh my, no. LTR, buddy. We're lucky to fuck once a month. After one round, we're more concerned with figuring out where we left off in The Wire than in making a bigger mess of the sheets.
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>>8137592
LTRs do that?
I'm in an LTR LDR so we fuck lots when we get to meet.
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>>8137614
That's how mine started!

Then I moved in with her. Don't ever do that.

So in this particular game, a drop rate of a particular item is 1/384. There are 3 unique items with this drop rate.

I would assume this would mean the chances of receiving any drop is 3/384 or 1/128.

This is where it gets tricky. If I wanted to calculate the odds of something dropping I get confused as to what I would do. Say, I repeated this process 100 times, meaning that I've hit this chance of 1/128 100 times, would the probability of me getting this item be 111/128 (symbolizing 100 attempts)? Or is this a gambler's fallacy and my odds are still...
>>
>>8137578
>I would assume this would mean the chances of receiving any drop is 3/384 or 1/128.
Depends if the odds are independent - i.e. does one of the items dropping impact the odds of the other two items dropping from the same kill.

>Or is this a gambler's fallacy and my odds are still 1/128?
Correct. If you want to calculate the aggregate chance over the 100 attempts that at least one drop happened, however, I believe you can take the inverse...
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>>8137578
>Say, I repeated this process 100 times, meaning that I've hit this chance of 1/128 100 times, would the probability of me getting this item
36,932305226788006779354614874355%
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>>8137578
If you wan't to find the odds of getting at least one drop in 100 attempts you start by calculating the odds of not getting anything after 100 attempts and subtract that from one.

1 - (127/128)^100 = 54%

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https://youtu.be/4Z4KwuUfh0A
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>>8137174
Yes.
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>>8137174
Wait I meant no
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>>8137188
now I know you will say maybe

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If evolution is self-replicating matter adapting to presented circumstances, why did we evolve sentience? It's not necessary for life on this planet.
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>>8137144
Evolution is not adaption. Evolution is a population-wide change in genes. This does not necessarily mean the population has adapted to anything. And it does not mean such changes are "necessary," whatever you think that means.
>>
>>8137144
>>
Who says sentience evolved? Perhaps it's more of an "after effect".

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What do people usually do with tutors?

There is a tutor in my area I would like to hire (mostly because of how hot he is), but I don't know how these things work. Does he provide questions or something?
>>
>>
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just go on a date with him then

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ITT: things you learned from reading the philosophy of science

I learned that science uses experiments and observations.

Thanks, philosophy. Without you I would of never know this.
>>
Albert Einstein is the smartest man in the world who invented E=mc^2
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>>8136716
This is fucking creepy
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>>8136716
Well yes you don't need to read p.o.s. to know that but if you for some reason wanted the justification for experiments and observations you would have to.
I learned that experiments need to differentiate between different hypotheses. If an experiment gives the same result no matter what hypothesis might be true then it is useless.

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Hi /sci/ i just wonder if anybody know if gallium can dissolve in water because i just buy 40g and i melt it with hot water and it seem that the water is darker
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>>8136671
lel, why would you use hot water when you could merely palm the container and use body heat to melt it?
>>
And also some of the gallium seem to have formed little black grain is this gallium oxide
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>>8136676
It is a lot quicker

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What is it about people in STEM that makes them horrible autists and debate philosophers and act like smug cunts in general about things?

Is it something in the water? People somehow think having a PhD in a very narrow field of physics or math gives them the authority to speak on anything
>>
>>8136440

Not all STEM majors are new atheists.
>>
>>8136441
Of course not every person in science is terrible, but I wasn't saying that
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>>8136440

>I can imagine a world without physics but not mathematics

this math guy made me cringe

First of all, I'm fully aware of how autistic I sound.

Secondly, I'm really interested in becoming more intelligent, and I'm interested in hearing your thoughts/experiences. Here is what I've been doing so far:
>self-learning calculus, although it isn't used in my degree. This is basically to do practice questions, which I feel is good exercise for the brain
>reading lots of fiction and non-fiction. I try and vary the non-fiction as much as possible, reading into economics, machine learning,...
>>
>>8136409
Stop walking listening to informatives, that's innatural. Use long walks to relax, it will help
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>>8136432
I meditate daily in order to relax
>>

For me, most of my progress has come from pushing myself, and straining/trying to deeply understand material. Without a concrete goal in mind it seems like a lot of your efforts would be wasted. What happens when you get to something that's much more difficult than your used to? Do you stop and give up when you stop making progress because you have no reason to push yourself?

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Is this? No subjects. Degrees that are are and science. Is the end of true intellectual thought at hand anon?

http://www.opencolleges.edu.au/informed/features/25-things-that-will-be-obsolete-by-2025/
>>
>>8136320
>Learning styles
>The genius factor
>Right/left brain
Good fucking riddance. Can't wait for 2025.
Also, why every read this futurology shit? It's probably wrong--it's definitely wrong. Ten years from now, my peers who endorse all of this shit will be the ones in academia. They're gonna keep that fire alive.
>>
>>8136320
>We’re living in an increasingly multi-disciplinary world, so why shouldn’t our majors reflect that? In the next ten years, we’ll start to see less Biology, Math, English and more Big Data, Creative Studies, and Decision Sciences.

HHAHAHAHAHAHAHAHAHAHAHAHA

Oh wait, you were serious?

$\bf{ HHAHAHAHAHAHAHAHAHAHAHAHA }$
>>
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>>8136320
>5. Tracking
>In their book, 50 Myths and Lies That Threaten America’s Public Schools, Berliner and Glass explain that tracking, or separating students according to academic ability, provides little to no benefit for low-achieving students and, at best, modest academic benefits for high-achieving students:

I don't even

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Question for an astrophysist or astronomer or anyone who might know. I'm reading Sagans Cosmos book and he mentions that there were several stars born in the cloud of interstellar gas and dust that formed our sun but that they have been separated. Was it the angular momentum that allowed them to leave because they were at a far enough distance from our sun that the sound gravity was negligible . Or was this cloud light years across?
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>>8136282
Why don't you read an actual astrophysics book?
>>
1. The cloud was light years across.
2. The external gravitational pull was greater than the internal gravitational pull.
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star nurseries are commonly huge. next.

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Is it possible to win in this position?
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>>8136248
> thought this was go and black got wrecked
what are the rules of othello again?
>>
>>8136253

I don't know. Barely know how the game works myself. I played for two or three days several months ago. I always lost by a huge margin. Now all of a sudden I seem to have a shot at winning.

Although, I forget if the diagonals will change color if I place a chip on b1. I know the four white chips in the center of the first row will turn black, but that won't be enough to win.
>>
>>8136260
F2, brings it to 33 28
Computer will have no moves, so b1, computer will still have no moves, b2

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Imagine a hypothetical alternate earth where there was no coal.

Could humans ever have invented things like current computers, the internet, and so on? Is there any alternate pathway of historical development that does not require coal, and achieves modern levels of technology?
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>>8136237
Burning wood? There are very few things that coal can do which wood cannot, albeit at a lower efficiency and higher cost.
>>
>>8136237
the Chinese were piping and burning natural gas for energy before Jesus was born, so I'd guess it's possible to skip the coal step.
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>>8136237
We have other fossil fuels right? Just no coal?

The US would not be the greatest country on Earth. Our success is largely because of our enormous coal deposits (there's a reason both sub periods of the Carboniferous are named after places in the US). But with other fossil fuels available we would simply rely on them more.

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I saw a reddit AMA where Richard Dawkins was asked "what is the biggest mystery to science?" and he answered consciousness was.
What do we not understand about consciousness?
To me it seems like it is just simply the ability to reason?
>>
>>8136065
Here is my thinking for this.
intelligence = ability to reason. with reason/logic being a limited thing (deduction upon reality, reality being limited) so too will the ability to apprehend this deduction
(intelligence) be limited.
hypothetically if a person we're to be absent all ability to reason, their mind being equatable to a sort of fathomless dream, are they
still an intelligent being?
no they are not. if define intelligence as ability to reason, without reason there cant be intelligence.
consciousness = an apprehension of reality
if they do not have the ability to reason they do not have the ability to apprehend.
therefore consciousness = ability to reason
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>>8136065
> biologists
> scientist
Turbulence is the biggest mystery
>>
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Being so smart that you perceive actions before you're doing them. It's a rather ambiguous term as were not the only things living, just the only ones deciding to live. Not all decisions are conscious, so how are we to tell which part of our thinking is the conscious bit? There are of course levels of conciousness as in some people are infinitely less concious in their decision making. Most decisions have been social and cohabiting ones, even though they persisted from times we would not have considered ourselves as concious. Is relating to another's intelligence...

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Opinions on pic related? I'm using it to teach myself calc before starting my degree. Good idea or no?
>>
Good idea, but supplement it with a book. Unless you're doing pure math, probably Stewart.
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>>8136035
You must have triple bonds because you are alkynes of retarded.
>>
>>8136039
top kek. Why am I retarded for this?

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Just finished reading The Walking Whales: From Land to Water in Eight Million Years. It's a reasonably easy read and a comprehensive guide to what we know about the evolution of the whale. Do you guys know of any other books that provide a readable outline of the evolution of a clade?
>>
Does it talk about that hip bone which has no current use? I've been interested in learning more about that.
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>>8136017
Also interested.

While this isn't the same thing and it is fiction, but the book "Evolution" by Stephen Baxter follows humanities' evolution from tiny mouse-like creature to homo sapiens, to some other thing later on. It is actually pretty depressing.
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>>8136021
Not enough to read it just for that. Really glosses over modern stuff and goes into each landmark fossil we have.

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When did you fall out of love with mathematics?
>>
>>8135700
When I met mathematicians.
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>>8135700
When public education beat it out of me. I've since fallen back in love with it.
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>>8135700
When I was introduced to the concept of imaginary numbers.

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How fucked would we on Earth be if the moon just disappeared one day?
>>
Well, the oceans would be monumentally fucked
>>
All of the coastal areas would flood, and the earth could potentially speed up its rotation, depending on how the moon disappeared
>>
not as bad as if the sun fell out of orbit

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This man thinks that the insights of theoretical computer science are as deep and as important in the endeavour of understanding the universe as the ones of physics. According to him theoretical computer science is like physics with a bottom-up approach.

Is he right?
>>
of course he is right
>>
>>8135521
No.
>>
>>8135521
No one can tell for sure.

In some aspects he's not wrong.

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