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Archived threads in /sci/ - Science & Math - 202. page


http://powdertoy.co.uk/

(from website)
Have you ever wanted to blow something up? Or maybe you always dreamt of operating an atomic power plant? Do you have a will to develop your own CPU? The Powder Toy lets you to do all of these, and even more!

Pretty cool game/tool with lots of neat physics and chemistry involved.

>Pic is a in game nuclear reactor
26 posts and 4 images submitted.
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Looks cool. I remember playing Falling Sand Game when I was a kid, this looks like an enhanced version
>>
> videogames
>>>/v/
>>
>>8014037
Science related, can be classed as a game or a simulation. Also /v/ is fucking cancer

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>the singularity is an unrealistic scenario!
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Naysaying knows no bounds.
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Keep dreaming, buddy.
>>
8ch /ratanon/

Can I predict the stocks with fractals.
20 posts and 2 images submitted.
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>>8013855
No
>>
Of course! I mean, your predictions won't be accurate, but you can do it.
>>
Can I predict fractals with stocks.

>be me in university library sitting at a computer
>reading muh algebraic topology book pdf
>that dude next to me looking at my screen
>his scared face when

Did you ever creep out normies with your math skills, /sci/?
12 posts and 1 images submitted.
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Everytime I code and people look at my screen like I was hacking the matrix.
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>>8013812
I know you do that on purpose to feel superior.

But you can't even talk to a chick.
>>
>>8013812
What book is that?

Have you already forgotten about me, /sci/?
22 posts and 4 images submitted.
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>>8013682
Yes. We're waiting for the next KBO in 2019. Shame i won't be Eris.
>>
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Triton is a much more important KBO
So important that Neptune stole it for himself
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>>8013684
Did New Horizons spot a new one to head toward?

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How long would a manmade object like a solar sail would take to reach near lightspeed levels ? Is it possible to send a probe and back to the nearest star within our lifetime ?
37 posts and 1 images submitted.
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I'm pretty sure some form of gold is the key to space travel

look at ormus
>>
>>8013676
> The Kingdom of Ormus was a 10th to 17th century kingdom located within the Persian Gulf and extending as far as the Strait of Hormuz.
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>>8013694

white gold powder

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I have a '5 page long' essay on the question "How can renewable energy and energy efficiency help Scotland meet its emission reduction targets?" Due in six days. What the fuck do I do?

I didn't sign up to Civil Engineering for this
36 posts and 4 images submitted.
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write DUDE GLOBAL WARMING LMAO
>>
Fuck off and get good

Sincerely,
Your Professor
>>
>>8013572
Investigate whether renewable energy sources in general have lower emissions than non-renewable energy sources

Investigate whether being energy efficient results in lower emissions than not being energy efficient

Setup definitions to this end

Be really pedantic and investigate lots of edge cases

Maybe derive propositional logic and set theory as filler

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If you knew all the laws of the universe and how matter works on the most fundamental level, and had knowledge about the exact conditions at the start of the universe, could you "calculate" the future by simulating the universe from the start?

The problem of there not being enough storage for all the data points because the number of smallest elements needed to be simulated is as many as in the real universe, which means true simulation would be impossible. But you could work around that if you could acurately enough predict how a system of elements (say billions) will act with just a few data points, the same way you could predict how a cell works without mapping out every single atom in it.

If you could calculate the future, how would that work if you decide to change whatever future you see in the simulation? What future would you see yourself simulate, in the simulation?
16 posts and 1 images submitted.
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>>8013555
>could you "calculate" the future by simulating the universe from the start?
No.
Even in a deterministic universe (and this ISN'T a deterministic universe), the three body problem would prevent you from doing this.
See also: halting problem
>>
>>8013590
>the three body problem would prevent you from doing this
this meme needs to die

it has a well defined solution


The answer is still no, but because OP would need a machine (a simulator or whatever you want to call it) bigger than the universe itself to simulate everything in the universe.
>>
>>8013600
>>8013590
I feel like you didn't read my middle paragraph.

>Scientists say that the universe is so huge that the probability of aliens is astronomically high. There are likely trillions of species out there.
>The Drake Equation
>Scientists say that not being visited by aliens is paradoxical given the sheer size of the universe with all these trillions of potential alien habitats
>The Fermi Paradox
>When someone says UFOs could be aliens they are immediately ridiculed. "It's impossible" despite mainstream science actually saying that it's impossible for us NOT to have been visited.
>All scientists have to hang on is the impossibility of FTL
>But there are habitable stars within 20 light years and we've had theoretical rocket concepts that can reach significant fractions of the speed of light since the 1960's
>There is also absolutely no law saying aliens can't live to 1000 making 50 year journeys fairly trivial.
>Finally we barely know anything about the nature of gravitation and spacetime yet already we have worked out theoretical "warp drives" and "wormholes" that can get around FTL
>If we managed that in the 100 years since Einstein worked out relativity imagine what a civilization around for a million years could do
In short, all signs point to aliens.
26 posts and 4 images submitted.
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>>8013470
There is literally nothing in this post that's correct.
>>
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>>8013470
>In short, all signs point to aliens.
Jesus Opie, there are already at least two threads about this.
sage goes in all fields
>>
>>8013470
>we've had theoretical rocket concepts that can reach significant fractions of the speed of light since the 1960's
>theoretical rocket concepts
>theoretical

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Is time relative?
13 posts and 4 images submitted.
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No. Everyone in the universe has the same sense of time, and no one has ever had an issue with clocks ever, especially when moving at high speeds. No arguments here, off with you.
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>>8013422
Why all the sarcasm? There could be a good discussion about all this stuff. Or did I post this in the wrong board?
>>
>>8013408
Yes this is a well known fact.

>Odds of the 2008 financial crisis happening was 1 in 1.309e+135 years (or 1309000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 years)

https://arxiv.org/ftp/arxiv/papers/1103/1103.5672.pdf

If scientists can't even predict the probability when a recession will happen, could they be grossly underestimating the probability of intelligent Extra terrestrial life forms existing in our galaxy that have already achieved FTL travel?
16 posts and 2 images submitted.
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>>8013405
>economics
>scientist
Pick one
>>
>>8013405
>If scientists can't even predict the probability when a recession will happen

This doesn't follow from your link in two ways:
>1.) They clearly had predicted it, and predicted such movements were incredibly unlikely to happen.
>2.) It isn't talking about the the 2008 crash but a particular model a hedge fund was using.

That said, I doubt they developed their models to include the wider malaise that hit during 2008.

>could they be grossly underestimating the probability of intelligent Extra terrestrial life forms existing

There are no predictions like that. And muh Drake equation doesn't count, it's terrible and doesn't predict shit.
>>
nothing can crash Faster Than Lehmann

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/b/tard needs your help guys.
I can't figure out what it is I saw in my telescope.
>be me
>be with girl and buddy
>looking through telescope
>thingsexpensiveman.jpg
>pick random star
>ball of electricity
>sparks are rapidly moving around
>was real time movement
>dudewhut.gif
>all 3 of us see the lightning ball
So are there electric suns or something? Would a blue dwarf do something like that? I saw this probably 6 months ago, haven't been able to locate it since.
>pic related, except the sparks were flying off this thing in area around it
23 posts and 2 images submitted.
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>>8013373
https://en.m.wikipedia.org/wiki/Ball_lightning
>>
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>>8013373
those are legends anon

did it look like this by any chance?
>>
>>8013382
I highly doubt it was that, it was in space I'm sure of it it fit inside the lenses of my scope so it was very far away
When I looked at the sky without the scope it just looked like any old star

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Are there any experts on ADD on /sci/?

i am quite desperate for solutions, and the info online is not helping me. i can only find stupid advice.

>inb4 dont eat sugar and gluten
44 posts and 3 images submitted.
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no gmo's
>>
>>8013298
can you be more specific?
i live in europe..
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>>8013292
Be born in may, and live in a state which doesn't penalize teachers for shit students, or a state in which teachers aren't allowed to recommend students take drugs.

Hey /sci/ which is the best online iq test?
13 posts and 4 images submitted.
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>>8013203
the one where gorilla posters score sub 85 and commit sudoku
>>
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Why are high schoolers and 1st year undergrads so obsessed with IQ?
>>
>>8013204
who is this young man ?

is the sun on fire?
25 posts and 2 images submitted.
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>>8013121
no
the sun's energy release is due to nuclear rather than chemical reactions (fusion, not oxidation)
>>
>>8013132
No it isn't.
>>
>>8013121
Not if you clash it with a sun made of iceh

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