[Boards: 3 / a / aco / adv / an / asp / b / bant / biz / c / can / cgl / ck / cm / co / cock / d / diy / e / fa / fap / fit / fitlit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mlpol / mo / mtv / mu / n / news / o / out / outsoc / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / spa / t / tg / toy / trash / trv / tv / u / v / vg / vint / vip / vp / vr / w / wg / wsg / wsr / x / y ] [Search | Free Show | Home]

Archived threads in /sci/ - Science & Math - 837. page

This is a blue board which means that it's for everybody (Safe For Work content only). If you see any adult content, please report it.

File: ferrocell-arcs.jpg (79KB, 1042x898px) Image search: [Google]
ferrocell-arcs.jpg
79KB, 1042x898px
https://www.youtube.com/watch?v=c-CbKHbH5QA

What's /sci/'s thoughts on this?
25 posts and 11 images submitted.
>>
>>8681524

That laugh is retarded.
>>
File: ring.jpg (469KB, 1500x1373px) Image search: [Google]
ring.jpg
469KB, 1500x1373px
Bump with more magnets.
>>
File: DSCF6664.jpg (216KB, 1600x1200px) Image search: [Google]
DSCF6664.jpg
216KB, 1600x1200px
>>8681537

File: 5464657546536.png (98KB, 640x437px) Image search: [Google]
5464657546536.png
98KB, 640x437px
>hurr man made global warming is a hoax
65 posts and 9 images submitted.
>>
>>8689119
Quality thread you've got there, friend.
>>
>>8689119
I was never a fan of those extrapolations, but it should be fairly obvious that blowing millions of tons of CO2 into he atmosphere and measurably changing the composition of it will have at least some global effects. Sure, it's uncomfortable as blowing CO2 into the atmosphere is kind of the foundation of modern civilization, but it is kind of plausible.
>>
>>8689127
But can you prove that a wizard isn't removing all of the excess heat trapped by the greenhouse effect?
You cannot, marxist.

File: 1.jpg (41KB, 400x478px) Image search: [Google]
1.jpg
41KB, 400x478px
Well, /sci/?
65 posts and 6 images submitted.
>>
File: particle.png (472KB, 1056x715px) Image search: [Google]
particle.png
472KB, 1056x715px
25
>>
AIDS
>>
25.

File: Albert_Einstein_Head.jpg (2MB, 3250x4333px) Image search: [Google]
Albert_Einstein_Head.jpg
2MB, 3250x4333px
76 posts and 16 images submitted.
>>
File: index.jpg (9KB, 225x225px) Image search: [Google]
index.jpg
9KB, 225x225px
>>
define "this generation"
>>
>>8684304
No one because if it were really the case we wouldn't still be associating geniuses with Einstein

File: Entire-Observable-Universe.jpg (2MB, 2000x1333px) Image search: [Google]
Entire-Observable-Universe.jpg
2MB, 2000x1333px
Is our observable universe "shrinking"? Because the universe's expansion is exponential, it would make sense that space is being pushed away from us, thus our view of the universe is getting smaller.
64 posts and 4 images submitted.
>>
>>8688926
yes
>>
>>8688926
let me qualify my yes:

Yes, also you're tantamount to those annoying kids in class that ask questions they already know the answer to, or could just google but decide against it to get smart points instead
>>
>>8688934
No, I wanted to hear some alternative view points.

File: Survey-500x225.jpg (29KB, 500x225px) Image search: [Google]
Survey-500x225.jpg
29KB, 500x225px
/sci/,
I'm writing my master's thesis and I need to figure out a good measure of socioeconomic status for 15-17 year old high school students in America. I don't want to just ask about parent's income because they likely don't know and they obviously don't have enough education for that to be a factor. I'm thinking about a sliding scale of something like "the wealth of my family is higher/same/lower when compared to those around me." it's a subjective self-report so it's not that valid, but I can't think of anything better. Any advice, suggestions, or experience with these types of questions?

>tl;dr
>anon needs help asking how rich kids' parents are in a survey
31 posts and 1 images submitted.
>>
bumb

will be monitoring this for the next 6 or 7 hours
>>
Ask if their parents rent or own their homes, find out how large the house is, and how many cars they own. That will narrow it down a bit
>>
>>8688792
Makes sense to ask about their parents. Know of another other proxy questions that get to the root of the question? I guess 'what is your parents education' is the most standard one

File: Hofstadter2002.jpg (423KB, 668x828px) Image search: [Google]
Hofstadter2002.jpg
423KB, 668x828px
Post favorite scientists & judge other Anons.


Here's mine >Douglas Hofstadter
16 posts and 7 images submitted.
>>
Neil deGrasse Tyson, Bill Nye, Stephen Hawking
>>
Jacob Barnett
>>
Op has shit tast

File: å.jpg (29KB, 1280x720px) Image search: [Google]
Ã¥.jpg
29KB, 1280x720px
What are your thoughts on Sam Harris?
61 posts and 7 images submitted.
>>
>>8687984
He's a faggot.

>>>/reddit/
>>
A really bad philosopher.
>>
>>8687984
>we should eliminate muslims because, like, islam is a set of bad ideas, man

Wow so intellectual

File: Lux.jpg (12KB, 480x360px) Image search: [Google]
Lux.jpg
12KB, 480x360px
When it comes right down to it isn't everything either 100% or 0%. It's already been predetermined by the laws of math, chemistry and physics. Just because you aren't aware of every variable doesn't mean they don't exist. When you give a number other than 0% or 100% what you are really saying is the % of how sure you are. Coin flip outcomes are never random but based on a series of variables; size of the thumb, shape of the thumb, shape of the nail. position of coin on the nail, muscle force used, how far the thumb moved, tilt of the arm, wind resistance, ect. You could say "oh the movement the participant chooses to use is random but when it comes right down to it that's probably predetermined too.
11 posts and 2 images submitted.
>>
probability is based on our limited knowledge
>>
>>8687953
k
>>
>>8687953
>When it comes right down to it isn't everything either 100% or 0%.

Everything believed is likely false.
Everything considerately and sincerely thought out is likely true or not far from it.
Lots of stuff is irrelevant.

File: 1487429038605.jpg (118KB, 1000x666px) Image search: [Google]
1487429038605.jpg
118KB, 1000x666px
Hypobaroc chambers are the best way to kill

They are cheap, fast and very painless

You reduce pressure so you the oxygen isn't able to penetrate into your blood

You don't feel unable to breath , just some headache and you laugh

Suddenly you pass out and die

(I experienced 3m of hypoxia in one of these and I didn't even notice it, while doctors said my oxygen was in 60% instead of 98% as usual)

Well and if they are bad guys, they can reduce pressure to almost cero to see how you shit your own intestines
12 posts and 2 images submitted.
>>
>>8687661
Nah the headache comes after regaining blood O2 saturation, just like a hangover occurs after the drinking, not during.

Now if you're talking about state executions, a bullet would be cheaper and quicker, but that's my two cents. The whole pentobarbital injection thing is stupid expensive and is not as reliable.
>>
>>8687685
>a bullet would be cheaper and quicker
But that wouldn't be "human".
OP makes a very good point.
You could execute a lot of prisoners in that chamber.
>>
alternatively: convert a server room to a shower room and activate it's helium fire suppressant system

alternatively alternatively: shove them all into a hangar and give them a pack of cigarettes, which when lit will activate the foam fire suppressant system which will drown them

File: a.jpg (35KB, 400x311px) Image search: [Google]
a.jpg
35KB, 400x311px
What more there is to get? What are some things humans really need and want, but we haven't invented it yet?

I mean sure we could invent flying cars and faster computers and ways to get more food and colonialize Mars, but I don't really think humanity deserves or needs any of those. It just keeps asking for more. Just like a child; what is the point of buying new and new toys to a child that never grows up and always wants more toys.

Even if I would invent something very important and big, I probably wouldn't publish any of the results. Maybe if I could get very rich, but just for fame? Not a chance. I think humanity has all they need atm.

>inb4 curiosity
16 posts and 1 images submitted.
>>
>>8686491
>What more there is to get? What are some things humans really need and want, but we haven't invented it yet?

when humans want to survive we need to explore space. in the long run earth is a death trap. asteroids, a collapsing sun etc. we need to colonize other planets and we need huge spaceships/spacestations to find more planets to colonize.
>>
As long as the imagination remains unfulfilled we must push foreward. If you think it's a matter of deserving something or not I think you're too caught up in contemporary social drama. If your argument is from guilt then sure we've made plenty of mistakes, but we'll never be able to rectify that unless we keep advancing.

We're living our lives stuffed in a tiny box defined by physical limitations while we yearn for freedom. It's not about "things" it's about possibilities and potentials. What humanity needs is complete freedom. That's "what there is to get".
>>
>>8686491
>I mean sure we could invent flying cars and faster computers and ways to get more food and colonialize Mars, but I don't really think humanity deserves or needs any of those.
This.
>Limited time Offer: Air and Water

>Even if I would invent something very important and big
Doesn't have to be big.

File: neuralnet.jpg (66KB, 540x405px) Image search: [Google]
neuralnet.jpg
66KB, 540x405px
Someone pls explain how Recurrent Neural Networks work and how it is implemented. Just can't wrap my head around it
14 posts and 5 images submitted.
>>
Read Introduction to Recurrent Neural Networks by Pepe Silvia
>>
File: 1480287055978.png (236KB, 400x300px) Image search: [Google]
1480287055978.png
236KB, 400x300px
>>8686374
CONNECTIONS
>>
>>8686374
>give algorithm set of data
>give algorithm desired result of data
>algorithm attempts to brute force result, checks its answer, and propegates backwards to correct errors
>repeat until desired result is achieved
Thats a supervised neural net
Unsupervised is more like
>give net data
>net runs data through nodes
>regardless of correctness continues to loop and strengthen connections of nodes that produce simmilar answers

A supervised net is good for, for instance in a video game, to give a charater a starting point and a finish line, and find the optimal way between the two points.
An unsupervised net would be given the starting point, then figure out something you can do with the character.

File: history repeating.jpg (78KB, 960x599px) Image search: [Google]
history repeating.jpg
78KB, 960x599px
If after the universe stops expanding it starts contracting again and eventually blows up from the pressure again in an infinite cycle, it means it has already happened an infinite amount of times and will happen again an infinite amount of times. that means every conceivable combination of energy, matter, events, etc, ie you and your entire life, has already happened an infinite amount of times, and will replay again an infinite amount of times.

Is that a scientifically accurate statement? How does time play into it? What is the effect on time once the universe starts contracting?
46 posts and 4 images submitted.
>>
It's not scientifically accurate if you can't prove or disprove it.
>>
>>8686190
nah but if determinism were real couldn't we figure it out and prevent something that was supposed to happen from happening? in effect disproving determinism
>>
>>8686190
I see the oscillatory universe theory has basically been disproved. Too bad, was sort of comforting to think i'd see all my dead friends and family members again.

File: 1477499264437.jpg (29KB, 500x547px) Image search: [Google]
1477499264437.jpg
29KB, 500x547px
/sci/ humor thread?
319 posts and 103 images submitted.
>>
>>8668254
Kill yourself
>>
>>8668322
That was an unnecessarily hurtful thing to say.
>>
File: hilarious and original.png (38KB, 163x166px) Image search: [Google]
hilarious and original.png
38KB, 163x166px

File: hqdefault.jpg (29KB, 480x360px) Image search: [Google]
hqdefault.jpg
29KB, 480x360px
Does the theory of evolution only appear to contradict the second law of thermal dynamics because of an open system?

If so, how?
144 posts and 23 images submitted.
>>
It's a law of THERMOdynamics. THERMO

THERMO

THERMO

It has to do with energy. DNA can become mutated all because of energy
>>
>>8686296
Evolution is a fact. It has been observed; hence it does not violate the 2nd law of thermodynamics
>>
File: It-Evolved-Sm.jpg (75KB, 918x369px) Image search: [Google]
It-Evolved-Sm.jpg
75KB, 918x369px
>>8686306
>what is ad hoc?
>what is a "just so" story?

Pages: [First page] [Previous page] [827] [828] [829] [830] [831] [832] [833] [834] [835] [836] [837] [838] [839] [840] [841] [842] [843] [844] [845] [846] [847] [Next page] [Last page]

[Boards: 3 / a / aco / adv / an / asp / b / bant / biz / c / can / cgl / ck / cm / co / cock / d / diy / e / fa / fap / fit / fitlit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mlpol / mo / mtv / mu / n / news / o / out / outsoc / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / spa / t / tg / toy / trash / trv / tv / u / v / vg / vint / vip / vp / vr / w / wg / wsg / wsr / x / y] [Search | Top | Home]

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/


If you need a post removed click on it's [Report] button and follow the instruction.
DMCA Content Takedown via dmca.com
All images are hosted on imgur.com.
If you like this website please support us by donating with Bitcoins at 16mKtbZiwW52BLkibtCr8jUg2KVUMTxVQ5
All trademarks and copyrights on this page are owned by their respective parties.
Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.
This is a 4chan archive - all of the content originated from that site.
This means that RandomArchive shows their content, archived.
If you need information for a Poster - contact them.