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Archived threads in /sci/ - Science & Math - 111. page
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File: sunlight-speed.jpg (31 KB, 640x480) Image search: [Google]
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>travelling @ lightspeed stops time.
>not for sunlight
12 replies and 4 images submitted. Click here to view.
>>
>>8108802
if the earth was traveling at the speed of light, the light from the sun would never reach us
>>
>>8108802

It's a matter of perspective.
>>
>>8108825
would you say that its relative?

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Why are so many people majoring in CS? Won't 80% just be code monkeys?

I don fully understand this meme.
I'm about to start uni, and computer engineering seemed neat but after talking with a lot of people they said it was actually very boring, and so is CS.

I might just say fuck it and go into math and physics
39 replies and 3 images submitted. Click here to view.
>>
I'm studying CS and it seems most of my schoolmates are in CS because they like videogames or because they want to get into web development. It's kinda sad really.
>>
>>8108723
CS grad student now, I wish I had majored in physics for my undergrad. Seems much easier to pick up CS concepts than the other way around.
>>
>>8108723
Code monkeys make around 30-40k a year. That's better than average.

I hate to break it to you but most people who go to school are just looking to get jobs. Not everyone is going to be the next Elon Musk or Gates.

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WTF? Does this have a straightforward answer?
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>>
Or does it require shenanigans? I thought about different frequencies and shit.
But strictly mathematically, I don't think you can solve this
>>
I don't understand what's supposed to happen
what does a process do if it recieves a pulse from the timer?
>>
>>8108731
I am confident that the pulse must cause some process to start running.
I am not even fucking sure what's in the rules and what's not. It doesn't specify.
Has anyone encountered something similar? And what were the rules?

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Good old Gauss said that if you could understand this identity with just a quick look at it you were "et le caput dolent friggin pinata fribee", wich roughly translates to "certainly a witty man ".

What do I need to know to test my might?

Don't get me wrong, I'm FULL ON about this numbers thing but the letters really mess the whole deal.

What does that "e" even mean?

"i" as an exponent? Hold it right there chieff, too much numbers for today
21 replies and 2 images submitted. Click here to view.
>>
>>8108682
It's pretty straightforward. It's just the polar expression of z=-1. https://en.m.wikipedia.org/wiki/Complex_number

You can prove that you can express numbers like this with the Taylor series of sine and cosine.
>>
>>8108682
All you need to understand this is the modulus-argument form and/or the cos+isin form. Usually these are learnt with De Moivre's formula.
It's pretty early on in any material regarding complex numbers.
>>
Euler's identity is the Beatles of equations

Overrated as hell (not bad, just overrated) and hyped up by plebs that only know mathematics up to calculus

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Why do some people stand by the idea that 1+1 makes 1?
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>>8108585
Who stands by that? You need to go outside man.
>>
>>8108589
Are you saying I don't exist? I think 1+1 does make 1, are you saying this is lies:

https://www.youtube.com/watch?v=FA5jsa1lR9c
>>
it's true if you're doing boolean algebra

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Is an Astronomy degree a meme?

Where does it fit into in terms of college major tiers?
11 replies and 1 images submitted. Click here to view.
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>>8108580
It's a field with very few openings every year and is completely over-saturated because every autist who thinks that black holes, universe and shit are awesome goes into it in his raging atheist phase.
>>
>>8108580
It's a secondary major you pick up if you have the time.
>>
>>8108580
In the usual God, good, okay, bad, terrible categories then actual physics is in the good category, and astronomy is in the okay category, bordering on just being bad.

But study what you want OP. People have made it work.

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How many of you have taken the GRE? How did you study for it?
33 replies and 2 images submitted. Click here to view.
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Got the Kaplan Premier prep book. Didn't bother with the book, because the CD it comes with is all you need. I took the practice tests on the CD, one or two full ones a day for the week before my test. The tests were the exact same layout as the GRE, so I was very familiar with the test. I feel like those practice tests really helped me do well.
>>
>>8108420
Does practicing actually help though?

I'm looking at these and it reminds me of the SAT which I did shit on even though I still managed to get into a decent school
>>
>>8108448
So I used the tests as a diagnostic as well, but I found practice helped a lot yes. The math part was easy for me (but I minored in math so IDK your thing) but the practice was most helpful for the reading parts, which can be kind of tricky. Also the scores I got on the Kaplan tests were very predictive of my real scores.

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what
33 replies and 3 images submitted. Click here to view.
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Thats why you dont divide by zero, fucks shit up
>>
>>8108359
lines 1-4 make sense, but on the 5th line, it becomes nonsense.
>>
>>8108366
unless it is a limit

File: Calendar-2015-Cyan-Design.jpg (97 KB, 600x600) Image search: [Google]
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Ideal calendar system?

Is there a better system to organize the weeks, months and days than the current one?

Just like we have Kelvin (although nobody uses).

And some people say there are benefits to having numbers up to base 12 (or even 60).

Discuss all of this, this is a thread for organization.
16 replies and 4 images submitted. Click here to view.
>>
bump, i've heard there's some scientific calendar that proposes 7x4 months.
>>
lunar calendar.
>>
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>>8108156

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Can one really sustaint a sleep cycle of around 2 - 4h?

Any experiences?
24 replies and 1 images submitted. Click here to view.
>>
no, you're basically tired all the time instead of being rested all the time

source: me, occured to me naturally for several months. Destroyed my life.
>>
>>8107977
umm I don't sleep more than 4-5 hours, ever.
but I don't do it on purpose, that's just how I sleep I don't need more than 4-5 hours of sleep.
when I was younger and I found out that my friends were sleeping for like 10 or more hours, I tried to sleep longer on purpose,
I would wake up after my usual sleep time which is like 4 to 5 hours and would go back to sleep, but I would wake up every +/- 30 min because I wasn't tired. I just cant sleep more than that.

yes I am sleeping...
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>>8107977
Fuck that, can one really sustain a sleep cycle of 8 hours? I've slept 12-16 hours a night since I was a child. Please send help.

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Visiting from /co/. I have a poop question:

When you hold it in due to an emergency/playing games/car ride, the urge eventually dissipates. What causes this dissipation? The feeling to shit will eventually return, but what's the process that makes the feeling go away?
19 replies and 4 images submitted. Click here to view.
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The rectum stops contracting.
>>
peristaltic waves

you don't cause it to go away, it goes away on its own, and comes back later.
>>
Right on. Thanks for the info.

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Is vaping actually bad for your health?
I though it was just water, how can that be bad for you?
39 replies and 4 images submitted. Click here to view.
>>
Obviously it's not just water. It's also nicotine. And other stuff.

We don't know if that's bad for your lungs yet. Err on the side of caution. Or die of stupidity, your choice.
>>
>>8107479
unknown additives going directly into the tissue of your lungs.
>>
>>8107479
Why would it be just water??
And probably yes. It can likely cause popcorn lung.

>ctrl+F
>no /matsci/
>no /nano/
>no /chem/
>no /ogen/ even
Alright guys, this thread is a dedicated MatSci and nanotech thread. Feel free to discuss all things relating to synthesis and mechanisms of your materials and your research (to whatever degree you feel comfortable). If you aren't involved in research, feel free to ask questions. Anything regarding synthetic chemistry, chemical mechanisms, or physical properties of chemical systems.
30 replies and 2 images submitted. Click here to view.
>>
Anyone here doing anything optics related?
>>
>>8107431
sort of, trying to make a material that exhibits the large photomechanical effect, scrubs CO2 from the atmosphere, clean energy, and maybe cancer too. Oh and it's like gonna be programmable too, so like we could tune it to whatever we want. Or at least that's what we said in the proposal

It is not going well. The project's horribly mismanaged. We haven't heard from our chemist in months, because somebody forgot to pay them. I just found out the other day that the team member who was supposed...
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>>8107670
meant to say cures cancer, but I suppose it could cause cancer too.

>There is an irreducible element in the subjective experience, that is, a complete physical description of the world won't exhaust the state of affairs, meaning that there is a intrinsically subjective element in the world, and the direct verification of such element is epistemologically impossible. There may never be a proper theory of mind, for that is beyond our epistemic scope.

True or false?
13 replies and 1 images submitted. Click here to view.
>>
take your shitty philosophical arguments from incredulity to >>>/lit/
>>
>>8106979
That is just a thesis stating sentence, an argument would offer justifications for it...

A philosophy class would help you realize that, you insufferable faggot.
>>
>>8106979
>>>/pol/

File: 1463960396979.jpg (551 KB, 900x1391) Image search: [Google]
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So I see that simpler organisms seem to have a form of biological immortality.
What evolutionary benefit does aging give organisms and why is this phenomenon global in most complex organisms?

Why did we evolve to age?

Is senescence a good thing?
16 replies and 3 images submitted. Click here to view.
>>
boredom and ability to adapt while under a limited amount of ressources. If our ancestor from a long time ago hadn't died, there would be a lot more people.
>>
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>>8106678
the reason for aging is death from external causes .if an organism usually survives X years against predation\other shit its evolutionary pressured into being fertile within that lifespan getting to it as early and for as long as possible .

if an individual survives much longer then that usual lifespan hes in uncharted territory , the 'evolutionary shadow'. basically your ancestors didnt live this long so no natural selection was made against fuckups which occur once someone reaches this age .

this...
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>>8106809
so basically you can think of your genes as including all the evolutionary pressures your ancestors experienced up to the point they reproduced .
a perfect immortal man has no evolutionary advantage over a man that falls apart and dies the moment he turns 20 if both of them reproduce at 19.

this also presents a way to extend human lifespan : have kids later in life . sure you'll have shittier kids buy by having longer selection you produce people that live longer .

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