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Why the fuck are we still dicking around with electric rockets when nuclear rockets have high Isp and high thrust? Electric rockets are great for sending small probes and rovers to Mars but manned missions need nuclear rockets. SpaceX's ambitions are noble but even if the cost is reduced nobody wants to spend a whole year on a spaceship bathed in radiation. Liquid rockets and electric rockets are fully developed and will never be good enough for manned exploration of space, it is time we moved on. The only nuclear rocket development programme rapidly came close to outperforming chemical rockets in thrust to weight ratio, if it wasn't canned in the 70s it would have probably made chemical rockets obsolete by late 80s. Even in the 60s as a third stage on a Saturn V it would have been capable of lifting an unbelievable 170 tons to LEO
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I don't exactly know the maths behind it, bur if something we're to go wrong either within our outwith out atmosphere and the craft were to explode, wouldn't that do a lot of fucking damage?
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>>7951688
Damage to Earth? Not relevant in space. Damage to the craft? You can say the same thing about chemical rockets.
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>>7951695
I believe that NASA and the United States aerospace industry hasn't been testing them much because they are messy. Furthermore any nuclear physics data needed should be collectible from inertial confinement fusion experiments.
They definitely have it on their list of preferred options for pushing back against the rocket equation however.
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Can IQ be increased or is it genetic?
>mfw most jobs these days require you to sit an online IQ test before they decide to call you for an interview
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Part genetic, part educational, part environmental. Yes it can be increased.
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>>7951430
You shouldn't want to work for a company that promotes pseudoscience anyway.
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>>7951430
>IQ tests for job interviews
America ladies and gentlemen
Anonymous
Upper level linear algebra 2016-03-23 02:50:39 Post No.7950699
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Upper level linear algebra 2016-03-23 02:50:39 Post No.7950699
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Upper level linear algebra
Anonymous
2016-03-23 02:50:39
Post No. 7950699
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Anybody here good at graduate/4th year linear algebra? We're currently on norms and inner products and the shit is bonkers hard. Pic related is the book we're using. If I give you a couple of exercises (or personal questions, that I just don't know), could you give me some help?
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>>7950699
I can show you how to stare at matrices all day and just see how fucking cool they look.
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>>7950699
shoot at me as a nigger you are. MY BODY IS READY FOR YOUR QUESTIONS.
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http://www.ustream.tv/channel/nasa-hd-tv/pop-out
board dead af why isn't there a thread
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>>7950672
here
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Lol, we both made one at the same time
>>7950673
Your stream is way better.
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>>7950672
Because its not Space-X. Just a regular ULA Atlas-V launch. No one cares about Orbital's launches since they stopped doing their own after their second-hand soviet rocket engine exploded.
I'm more hyped for this mission's deorbit than its routine launch. They're going to light the inside of the capsule on fire after it leaves the ISS.
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If the smallest length that makes physical sense is the Planck Length, and a string is one Planck Length, doesn't that mean the diameter of a closed string is 1/pi Planck Lengths, and thus we can't distinguish between two closed strings within the same Planck area?
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It means that's a good album desu
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>>7950585
>If the smallest length that makes physical sense is the Planck Length
>and a string is one Planck Length
I don't think string theory discretizes space.
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>>7950614
from wiki:
>In string theory, the Planck length is the order of magnitude of the oscillating strings that form elementary particles
Anonymous
Dumbest ways to destroy a developed civilization in space 2016-03-22 22:01:51 Post No.7950126
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Dumbest ways to destroy a developed civilization in space 2016-03-22 22:01:51 Post No.7950126
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Dumbest ways to destroy a developed civilization in space
Anonymous
2016-03-22 22:01:51
Post No. 7950126
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What would be the dumbest way for a future civilization (let it be a whole planet in some distant galaxy) to die trying to go against the laws of physics and common sense.
> Let's enter a black hole to see what is on the other side
> That Quasar is shiny as fuck
> Can I put two black holes together?
> LHC
> Let's touch that magnetar
> I can curve spacetime
Anyone? With scientific explanations please
Pic unrelated
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>>7950126
If 9gag was a human being this is what it would type like.
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jesus christ that picture
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>>7950126
As if monkeys don't have eyes
CompSci BSC curriculum at a european university
maths courses: (in no particular order)
>course dedicated to revising highschool algebra
>linear algebra (vectors, bases, matrices,determinants,eigenvalues, eigenvectors, gaussian elimination, etc)
>discrete mathematics 1-2 (mostly group theory, graphs, polinomials, basic crypto)
>Analysis 1-3 (limits, differentiation, infinite series, integration, vector calc)
>probability and statistcs
>numericals analysis (matrix decompositions, iterative methods, interpolation, splines)
>differential equations
programming and programming-related courses: (in no particular order)
>introduction to programming
>c++
>ada
>software architecture
>formal languages and automata
>algorithms 1-2 ( data structures, sorting and searching algorithms)
>logics and computing science (first and second order logics, turing machines, space and time complexity)
>functional programming (haskell)
>basics of programming 1-2 (course dedicated to type theory and proof of correctness)
>databases 1-2 (data storage, sql)
>operating systems
>OOP 1-2 (basic oop concepts, Qt, .NET)
>web development(HTML, javascript, basic frontend design)
>web applications(backend and very basic netsec)
>compilers
>introduction to AIs
opinions?
is this less pleb than the stereotypical comp. sci. degree?
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>is this less pleb than the stereotypical comp. sci. degree?
Yes. But that doesn't say much, because the stereotypical CS degree is a complete joke, that may not actually exist anywhere on the planet.
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>>7949906
As someone who studied CS in Europe, I can tell you this is NOT the typical CS curriculum.
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>>7949924
>As someone who studied CS in Europe, I can tell you this is NOT the typical CS curriculum.
How so? It looks quite standard. A bit light perhaps, but nothing out of the ordinary.
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How do I learn all Higschool math (including calc 1) as fast as possible? maybe even calc2 or calc 3 is there any book ou there that has like a crash course format? also what other subjects besides calc 2 and 3 are important in college?
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>>7949753
If you're doing it for the first time, doing a crash course is dumb imo. Find a course or buy some textbooks from schools, universities, etc.
Don't fall for any sci textbook memes.
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>>7949753
how fast do you need to learn it
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That would be an interesting guide if they took it a little more serious.
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At long last we have finally got a closer-up image of the infamous bright spots.
>Pic related is low res.
High res image for more detail here:
http://www.nasa.gov/sites/default/files/thumbnails/image/pia20350.jpg
>Link to twitter announcement
https://twitter.com/NASA_Dawn/status/712325228148318208
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>>7949579
Looks like a big ice comet went splat. Either that or they shopped out the alien base.
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The full sized photo is fucking magnificent.
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Hey /sci/, I have a weird thing going on. From time to time I lose vision for a split second, as if someone had flickered the lights on and off. I'm sure it's not me blinking without realizing it.
Any idea what it could be?
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Your brain tumor is affecting your optic nerves.
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Brain tumor, I'd get an MRI pretty soon if I were you.
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>>7949467
My cousin had a brain tumor and the same thing would happen to him. Definitely get an MRI and avoid any heavy lifting until then.
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Daily reminder only subhumans denote alternate hypotheses as "Ha"
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>caring
The null hypothesis of OP not being a faggot must clearly be rejected
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>>7949335
I bet you don't like skub either
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>>7949320
who the fuck does that
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Post in this ITT if you embrace transhumanism.
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>>7949308
dumb robot poster
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>>7949365
>dumb x poster
>>>/notsci/
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Nope love sins of the flesh, sorry.
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Are you intimidated by others knowledge?
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ya
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![d737bd76a59cdb82b80fe0c0dbbc5bad[1].jpg](https://cdn.4archive.org/sci/image/1458/656/1458656537496.jpg "d737bd76a59cdb82b80fe0c0dbbc5bad[1]")
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>>7949283
kek
Honestly, how do I study chemistry and become better at it? I
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(Chair+Book) x Studying = Learning
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>>7949166
cmon...
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>>7949178
What do you want? For someone to tell you the "secret"?
There is no secret. It's hard work. It requires effort.
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All you niggers laughed at me when I said flying cars and hoverboards were happening soon well I've been following the lithium-polymer market and the power density has been steadily increasing by 3% every 6 months. And whenever they release a new range the previous range halves in price. You'll cowards are too pussy to be on the frontiers of technology like me. Kill yourselves.
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> autistic popsci sperglord
> only 1/10 things he said have almost came true
> LOK GUISE I WAS RITE xDD
get the fug out >>>/x/
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>>7949017
1/10? Everything I said came through. /sci/ said battery tech would never improve, it improves every 6 months. Price has been dropping like crazy as well.
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>>7949082
Let me know when we have battery powered passenger aircraft.