Archived threads in /sci/ - Science & Math - 652. page
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Post your school, everyone else r8
I'm in the cockrell school of engineering btw
Graduated Biomedical Sciences in 2008
![UMass-Lowell-logo[1].png](https://i.imgur.com/FBRbeJZ.png "UMass-Lowell-logo[1].png")
I don't actually know anything about schools
double degree in applied and theoretical math atm.
probably gonna go here or to Ohio State for grad school.
handle the process with care
Buy more money
Step 1 : completely dismantle the fed reserve and the corrupt banking monopolys
Step 2 : stop pushing a ponzi scheme economic plan
Step 3 : put back the gold standard
Step 4 : profit!!!
Something like that.
Maintain a surplus until the debt is gone.
Come on, /sci/, it's not rocket surgery.
Can somebody explain Conformal cyclic cosmology to me? My mind is full of fuck.
How can an infinitely expanded universe equal an infinitely compacted one? How does time even exist if an infinite amount of time equals a single instant and how does space even exist if an infinitely inflated universe equals a universe compacted to a single point? How does energy exist if infinite entropy is equal to zero entropy.
I was cool with the idea of a cyclical universe, but I was assuming that a big bang was just a really unlikely vacuum fluctuation that could happen during...
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this is my uneducated guess
>>7636226
Basically imagine everything you said there and assign them to dots/discs and you have an idea of what happened before space collapsed into, with about 6 more steps in between that and, time and the big bang
Want me to elaborate?
:^)
>>7635800
At t=0, everything is compressed in a singularity, so there is only one single point in space, and it is impossible to reach any others. There is no way to observe any "past" events, but you can still have an effect on future points in space-time - as long as those points can draw their origin to the single point in time and space you're at right now.
At t=infinity, everything is accelerating away from everything else at the speed of light. This means that there is no way to observe or interact...
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Am I the only person here who has nothing to do with STEM in real life? I just like to discuss science and tinker. I dont actually like the professional STEM environment, you have to be so qualified and work so hard for such little pay and recognition and your peers are all insufferable autists.
>>7635791
Looks like everyone is still in the lab
This board has actually scared me away from studying STEM in college.
>>7635791
You've never actually worked in a professional STEM environment, have you?
I think that the extraordinary claim is that life on Earth is somehow special magic pixie dust, and not an emergent characteristic of chemistry and physics, and abundant in the cosmos.
nobody is saying life is extraordinary
what's extraordinary is aliens flying to earth in spaceships
>>7635793
>nobody is saying life is extraordinary
I have seen many people on this very board claim that ET life might not exist.
>>7635793
I have seen UFOs with my own two eyes, as have many, many other people. I think it is an extraordinary claim that there is a small branch of humanity which has not just advanced technology but actual science which is decades if not centuries ahead of the reast of humanity, and has done so for the better part of the last century.
>>7635801
True enough. I have seen people actually claim that the ALH84001 announcement was actually falsified and will argue...
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How do I subtract 12.12 from 20.00 in my head? I am making it harder than it is.
>>7635730
Subtranct integers first, then substract one more, finally 100-decimals
>>7635730
20 - 12 = 8
100 - 12 = 88
= 8.88
Eventually you learn how to handle it adaptively almost automatically. For example if it was 103.00 - 12.12, you could start with the decimal values first, or just recognize what they would do and just do 102 - 12, the decimal.
>>7635730
>Hmmm subtract 12 from twenty, well there's 8.
>oh shoot, there's a decimal, k, let's just subtract that off the 8 too
A list of 500 discovered exoplanets
Larger version here
http://orig00.deviantart.net/505e/f/2015/294/8/e/exoplanets_by_jaysimons-d9dv6th.jpg
You have to download it in able to read the text
i don't see life anywhere in these
>>7635545
>they all look like jupiter
why
>>7635622
because they are gas giants and can't sustain any life.
I was interviewing with a options trading firm and was asked this question:
>There is an asset whose price goes up 30% with 50% probability
>It goes down 25% with 50% probability
>After thousands of iterations of these prices changes, what is the expected return?
I don't understand...the expected return in a single time frame is positive, but after running simulations on my own, I know that this eventually falls to 0 with many iterations.
Why is this?
50/50, it either goes up or it doesn't
>>7635512
0.75*1.3 = 0.975
>>7635512
Why would this not just be expected value?
(0.5 * 1.3x) + (0.5 * 0.75x) = 1.025x where x is the price of the asset
I'm not very good with stats so I'm not being a smartass. I'm legitimately asking why it wouldn't just be that.
Hey /sci/.
Super Strypi is launching soon, carrying ORS 4 and some cubesats.
The ORS 4 mission is a first flight demonstration of the experimental, low-cost Super Strypi small launch system. The Operationally Responsive Space office is managing development of Super Strypi in partnership with the University of Hawaii, Sandia National Laboratories, the Pacific Missile Range Facility and Aerojet Rocketdyne Corp. The goal is to deliver payloads in the range of 300 kilograms to low Earth orbit. A Super Strypi launch vehicle will deliver the HiakaSat spacecraft and multiple...
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Bump because normally /sci/ likes launches
This thing's being launched from Hawaii, and it's basically trying to bring back the sounding rocket concept.
launching now, personell are evacuating pad
>>7635522
What do you mean "bring back the sounding rocket concept"? Sounding rockets are still a thing. Hard to bring back something that never went away.
Hey /sci/, what are some good books you recommend over aerospace engineering, astronomy, astrophysics, etc?
OP's pic related is pretty amazing
I personally recommend "How to Build a Habitable Planet" by Langmuir and Broecker, but it's more about planetary geology than astronomy. The first few chapters have some good astronomy shit though. Covers nucleosynthesis, stellar life cycle, accretion, etc.
>>7635452
http://4chan-science.wikia.com/wiki/Physics_Textbook_Recommendations
http://4chan-science.wikia.com/wiki/Astronomy_Textbook_Recommendations
http://4chan-science.wikia.com/wiki/Mechanical_and_Aerospace_Engineering
>>7635541
Thank you, did not know how to get to these from mobile
![Waermflasche-201020519464[1].jpg](https://i.imgur.com/KtqCoQS.jpg "Waermflasche-201020519464[1].jpg")
Your favorite invention? Can be simple or complex. No intellectual posing please.
Pic related, keeping me warm and comfy all winter.
If I had to go higher tech I'd say the internet or maybe our satellite network.
>>7635443
>no intellectual shitposting please
May I ask what you were expecting from /sci/?
>No intellectual posing please
friend, i believe you have not completely grasped where it is that you are posting
pretending to be intelligent is what makes /sci/ so wonderful
the idiots that don't actually know anything pretending to be smart, and the smart people being idiots all balances out in a raging shit-flinging contest between the two parties
my favorite invention is /sci/
Really /sci/? You fuckers keep shitting on this tech, and now its confirmed to work, you say nothing? Bitter losers. Stick to your lego projects.
>With this design, a mission to Mars would result in a 70-day transit from Earth to the red planet, a 90-day stay at Mars, and then another 70-day return transit to Earth.
http://finance.yahoo.com/news/nasa-latest-tests-show-physics-230112770.html
>>7635364
sup /pol/
>>7635364
>>7635364
That's the news on the energy available for the Mars mission?!!?
FUUUUUUUUUUUUUUUUUUUUUU GET ME THERE NOW SPACE X!!!!!
>"For strong AI to exist it must be able to rewrite its own code!"
Why do retards repeat this so often?
>>7635233
And why do you disagree with the idea?
>>7635246
In neither the theoretical mathematical formulation of AGI (AIXI) nor the current state of the art AI systems does "rewriting code" come into play in the least. It seems entirely like something someone who knew less than nothing about how computers or AI actually work imagined as just sounding cool, which would be no one's business but their own except for that I've seen it repeated so frequently.
Programs that rewrite themselves are also nothing novel in CS and yet none of it has resulted...
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A strong AI will be able to potentially rewrite it's source code, but its not a requirement to qualify as strong AI
$\frac{2}{3}
$w_c$
[math]\text{HA}^{\text{HA}}[/math]
[math]\dot{\widetilde{x}} = A\tilde{x} + Bu[\math]
>A New York District Court has granted Elsevier's request for a preliminary injunction against several sites that host academic publications without permission. As a result the site's operators are now ordered to quit offering access to infringing content, while the associated registries must suspend their domain names.
https://torrentfreak.com/court-orders-shutdown-of-libgen-bookfi-and-sci-hub-151102/
How can we neutralise the damage that's about to be dealt?
>>7634879
oh fuck me
Host libgen on Tor?
>>7634900
The entire Genesis Library is over 30TiB, that's impossible
