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Archived threads in /sci/ - Science & Math - 212. page
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Post you favourite /sci/ books, help out your fellow anons finding the best books for their field
>>
>>8219953
Why is it in sale in those shitty countries only?
>>
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>>8219953
inb4 >cs
>>
what is /sci/'s favourite mech eng book? pls no meming

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What will be the next biggest scientific advancement?
>under 50 years
>>
creation of sentient AI
>>
>>8240231

gravity wave detector in orbit using capacitive sensing
>>
>>8240231
propulsion system without propellant

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>>
What is coordination number of copper in [Cu(gly)2(H2O)] supposed to be? I get 5 but supposedly it should be 6.

Gly is bidentate so 2x2 = 4 + 1 from monodentate H2O = 5

What am I missing?
>>
Does
$\frac{x^{2}-1}{x-1}$
equal
$x+1$ ?
>>
>>8230663
Unless x equals 1, yes. If x equals 1, the first expression is undefined.

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Are humans the worst species on Earth?
>>
>>8238798
imagine when the aliens receive and begin to theorize what that lump between his extremities could do
>>
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That picture is Not Safe For Work, OP. Here, I fixed it for you.
>>
>>8239256
i can still see her tits n vagina

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In your opinion, what life factors cause or contribute to depression?
>>
>>8240093
brainletism
>>
>>8240097
ay ay fuck u mate
>>
>>8240093
I'd be depressed if a fucking tiny rain cloud followed me everywhere I went.

Actually wait, no I wouldn't. That would be fucking awesome! Where do I sign up?

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Why should scientists be paid? I just finished watching Carl Sagans cosmos so I think I have a really good understanding of your field but it still doesn't make any sense to me... why is the government giving billions of dollars to people who just wear lab coats, smoke pot, and look at really bright lights thinking that the "lasers" are revolutionary technology (if they're even doing good science- if they're not, then they're just staring at the fucking sky while they're tripping and thinking about how the amount of light from each star can...
>>
VERY good post.
>>
Sage in all fields
>>
>>8241845

I got a better idea.

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Middle School and High School students often wonder why they are required to take math and science courses.

Is there a good reason? What would you say to such students?
>>
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>>8240450
>>
>>8240455
I kek'd
>>
>>8240455

Are there any good alternatives to SSRIs for anxiety? I've been on a handful of different serotonin-based medications, and none of them have offered optimal results.

I'm an extremely nervous, worrisome and paranoid person at times, and I feel like it's holding me back in life severely.

>inb4 weed lmao
>>
>>8238975
benzos lmao

I dont know what the fuck doctor is giving you SSRIs for ANXIETY of all conditions...

Benzos have a long and established efficacy in treating outbreaks of anxiety, anxiety attacks, and in general calming people down. They are like tranquilizers and exert a powerful calming effect on the subject with minimal side effects and low risk of death in overdose. They are very safe medicines and well-studied for this purpose.

tl;dr you need Alprazolam (xanax) for severe anxiety or Clonzeapam...
>>
DXM (dissociative effects completely eliminate social anxiety, opiate effects make you not give a fuck, leaving you very calm and at peace)
RC benzos
GHB (1,4 butanediol legal alt.)

And to a lesser extent:

Phenibut

All legal / OTC
>>
>>8239004
Even worse, I had a doctor suggest I get on an anti-psychotic drug about a year ago. And I'm talking schizo-tier shit too.

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Are some people just "bad at math", or is it a skill that anyone can learn?
>>
It's an inherent ability

People are born smart or they don't, it's a 50/50 chance
>>
Everyone can learn math
But many are just lazy/afraid of it for some retarded reason

You have to consider the most important to thing to develop any skill is your interest, if you always felt history was cooler than math, then good for you but you'll probably drop math from your life and call it useless
>>
you could have asked a better question then that I think

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Why do we humans have such a surplus of intelligence? I mean why the hell are we able to to quantum mechanics and astrophysics when all we're evolved to do is basically hunt and fuck?
>>
They're fun things we found to do using the variations in intelligence needed for survival..
>>
>>8236246
because communication allowed us to do it
>>
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This thread is unironically pretty goo

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https://youtu.be/VVV4xeWBIxE

What should he build next?
>>
>>8235582
Some leg splints so he won't be a manlet anymore
>>
EM drive using a vuvuzela
>>
>>8235582
shoes.

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If you could ask a SpaceX employee anything what would it be?
>>
>>8232383
Why didn't you get into NASA?
>>
How does it feel to be working for a meme?
>>
>>8232383
I would just scream the word "meme" at them

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>"Ugh, you're a physicist? How does that even apply in real life."
>"Physics (or any hard science) is so boring and stupid"
Note that those two quotes are mostly said by annoying tumblr kids.
>>
> Economics? Oh man you'll be rich.
>>
>>8226111
>You're trying to get a dual degree? Which one is just for fun?
>>
Why are you stating your degree to annoying tumbler kids. Tbh you sound annoying. Glad I never went to college it's where all the dum kids go nowadays

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How flat-earthers explain this?
>>
>>8215660
How flat earthers explain GauB's theorema egregium?
>>
>>8215660
timecube ;)
>>
>>8215660
All I know about flat earth is they think the earth flies through space like a clown's pie.

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Since we know "smoking being bad for you" is a myth, what can be done to change this fact?

>Within the current antismoking climate in the Western world you will not find papers that will explicitly state that quitting causes any harm, let alone lung cancers. In fact the official party line is that quitting significantly reduces harm and lung cancers (resting entirely on the stats on non-randomized/self-selected samples). What tipped me that there is something fishy going with the official party line was paper by a research team of Indian...
>>
>>8236344
take your shit elsewhere, /b/uddy, this is /sci/ence.
>>
>>8236353
Too late, buddy, the truth is being slowly revealed.

Same exact findings in an entirely different study.

http://www.sciencedirect.com/science/article/pii/S1556086415322061
>>
>>8236344
>>8236360
So abruptly quitting smoking is harmful, okay. It's not different than with drinking. Still better not to start.

Is your country becoming smarter of dumber?
>>
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>>8226178
>>
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Who O'Neill cylinder here?

Why aren't people working on these instead of trying to get to and colonize shitty unlivable planets?

https://en.wikipedia.org/wiki/O%27Neill_cylinder
>>
>>8213661
Because colonising shitty planets is cheaper.

It takes considerably less resources and until we can asteroid mine O'Neill cylinders won't happen.
Far too expensive to haul all that stuff into space. We need a Moon base or spacestation factories.
Or a space-elevator.
>>
>>8213801
You can't colonize any other planet in the solar system. All of them have something highly unlivable on them. The longer you try to live on them the more the degrade your body. Having children on them is a death sentence.
>>
>>8213661
We do not have anything near the capacity to transport that many people into space nor launch that enormous amount of mass it takes to build these. Most likely you would need to launch mass from the Moon and then you frist need to build a complete Moon base. Even so it is likely that O'Neill cylinders would be far from the top priority. Making huge amounts of solar power satellites would be closer to the top of the list of priorities.

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Do any of you deny global warming/climate change? If so, what are your reasons?
>>
>>8237307
>dat pic
>cringed hard
I lost an ability to care about it t/bh f/am
>>
Are you asking why do people deny silly myths ?

What a stupid pointless thread lmao
>>
>>8237314
I'm asking why people consider it a myth.

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Does /sci/ practice their math on a whiteboard? Is this considered pretentious?
>>
>>8236006
Sometimes it can be nice to work while standing up. It's especially useful to have one when you're collaborating with others on a problem. It doesn't really come across as pretentious unless you already are a pretentious person.

The only downside is space, sometimes when you're working on something you try a lot of different things and you will want more room than is on the white board. You might try one idea, put it to the side, try another, then want to return to the first. You're...
>>
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>not writing formulas on your windows
>>
>>8236006
>practice their math on a whiteboard
>whiteboard
>white
>not black

get the fuck out, ass-loving cunt

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ITT: Numbers that feel like they should be prime, but aren't.

Pic related.
>>
3*10 + 3*3

nay
>>
>>8230698
How does 39 not feel prime to you? 3 divides both 10 and 9. Now 1999, that's a number that feels like it should be prime. Conversely 9991 is a number that feels like it should be prime, but isn't.
>>
117

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If nothing can create something then by definition its not nothing, is it?
>>
who said it formed out of nothing?
>>
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>>8232238
We don't know. We have not yet constructed a model of the makeup of the Universe prior to Planck Time. Saying that at Tzero the Universe was nothing (or even a Cartesian point) is a guess.
>>
Something within nothing?

(protip: language is broken and shit for trying to understand shit)

:)

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This is getting lots of attention on the land of retards /b/.
There are lots of answers going around, 100, 20, 5, 4 and 1
It's 20 right?
>>
Nvm I think it's 1
>>
5
>>
5 minutes.

Really? How could this possibly confuse anyone?

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Do you avoid GMO-free food to avoid supporting anti-science?
>>
No I just eat whatever as long as it's not clearly bad for me. I'm not gonna miss out on tasty food just because it's GMO-free.
>>
>>8234715
I've heard GMOs can cause long term health problems, especially inflammation. They say that because you're altering the nucleus of the cell, your body doesn't recognize it.
Is there a shred of evidence for this claim?
I've heard about some pig experiment where showed pigs who eat GMO foods correlated to an increase inflammation.

Pls /sci/, is this just a meme?
>>
>>8234896
>They say that because you're altering the nucleus of the cell, your body doesn't recognize it.
Christ I hear a lot of anti-GMO bullshit, but that takes the cake. Personally I think GMO food should be labeled because I believe in the consumer's right to make informed decisions, but I would purposely buy GMOs over non-GMOs.

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How does LSD alter the neurological receptors, so that it produces the "ego death"?

I have had this experience last year, and I've never really looked at it from an objective perspective, but it has changed me as a person and I started reading a lot more since.

The "me" knowing that "I" exist has faded for about 30 minutes, and time passed either very slowly or very fast.
>>
bumpi
>>
serotonine receptors
>>
https://theconversation.com/magic-mushrooms-expand-your-mind-and-amplify-your-brains-dreaming-areas-heres-how-28754

>This finding of a similar pattern to dream activity is intriguing. While the psychedelic state has been previously compared with dreaming, the opposite effect has been observed in the brain network from which we get our sense of “self” (called the default-mode network or ego-system). Put simply, while activity became “louder” in the emotion system, it became more disjointed and so “quieter” in the ego system.

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Dear /sci/, growing up I've always been bad at math and never really paid attention during classes, but now at the age of 23 I realize how amazing it really is. I've forgotten most of what I've learned during high school and would not just like to relearn that, but also progress to the level of a Math major. I know if I put my mind to it I can do it, I just need to be directed to some useful resources. ANY SUGGESTIONS at all would be appreciated. Thank you.
>>
>>8231215

http://4chan-science.wikia.com/wiki/Math_Textbook_Recommendations
>>
>>8231215
>>
>>8231228
>>8231239
a huge booklist is shit advice

>>8231215
first learn the basics well, KhanAcademy is good for that. review well and start with calculus 1 from ocw.mit.edu along with something like Stewart's Calculus, which is pretty light. once you're at that point, ask again for advice

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Here's thunderf00t's video proving the Hyperloop will kill you. Is this a valid experiment that concludes the Hyperloop will be a failure or is it clickbait trash? He has a PhD in chemistry if that changes anything
>>
Fuck. Forgot the video

>>
>>8228375
>thunderf00t's

>>
>>8228375
You should watch his other longer video on the hyperloop's various problems.

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I want to see what /sci/ thinks regarding organic tobacco. I'm not talking about company cigarettes bought from the store. I would argue that it is good for the human body.
>>
Im pretty sure smoking anything is bad for you, although I do feel that store bought cigarettes fuck me up more than hand rolled ones though
>>
>>8234244
Pretty much this. Any smoke inhalation would result in harmful effects on the lungs
>>
Grow your own tobacco and chew on the fresh uncured leaves. Bam, no cancer.

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>centrifugal force isn't real XD

ITT shit undergrads say that annoy uou
>>
>>8230972

>evolution is just a theory just like gravity
>>
>>8230972
>I have a 4.0 first semester freshman , HUH engineering school is easy ,, LELELELE ima engineer
>>
>dark matter

How can you see "the existence of life on other planets is extremely probable" when we've only been able to prove the existence of life on one planet.

With that sample size we can only say "life exists on planet(s)" but we cannot extrapolate from this at all.

It is mathematically retarded to say anything about the likelihood of life regardless of how many stars, planets, galaxies, etc. you can prove there are.

If anything the existence of life becomes lower the bigger we find out the universe is, because it's just 1/x where...
>>
>>8235712
>If anything the existence of life becomes lower the bigger we find out the universe is, because it's just 1/x where x is the number of planets we discover.
The fuck?
>>
>>8235758
1 is the planets we discovered life on, x is the amount of planets we discovered total.
>>
>>8235766
just because we discovered a planet, it doesn't mean there isn't life there

it would be still in the bacteria phase

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ITT post real scientific facts, theories and hypotheses that you find unsettling, creepy or overall mysterious

>/x/-tier garbage like chemtrails, HAARP, UFOs certainly not welcome
>>
KIC 8463852
>>
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things I find creepy are events in earth's history for which there is no conclusive explanation

for instance, chemostratigraphy shows enormous negative and positive excursions in the δ13C at the end of the Permian. They're the biggest spikes in the entire phanerozoic and the Carbon-values are generally all over the place until they spontaneously stabilize in the middle of the Triassic.
Geologists have yet to determine the source of these excursions.
>>
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>>8232652
Moloch worship by the global elites

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