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Archived threads in /sci/ - Science & Math - 56. page

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>he doesn't study with any professor who got a PhD at MIT
really, what are you spending that tuition money in
18 posts and 1 images submitted.
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>>9154033
i did in material sci class.
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I study with a professor who is an internationally recognized geneticist, and my PI is investigating the emerging field of G4-protein interactions in relations to diseases.

Not as good as your MITmeme, but maybe I'll get there when I'm not an undergrad.
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>>9154033
pre-professional courses

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Does anyone have any real experience of MENSA? What is it like? Picture related.

My IQ test is scheduled for tommorow, any tips?
23 posts and 2 images submitted.
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Just be yourself.
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>>9154008

Let's see, Mensa members:

Force their intelligence on unwilling victims.

Feel underappreciated and undersuccessfull.

Have soured on the Universe and tend to be disagreeable.

Are often right-wing conservative

Certain factions accept astrology, pseudoscience, and other intellectual trash.
You dont have to join Mensa to meet them, they're all right here.
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>>9154073
It's like /pol/ except mensa is actually smart.

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Was wondering what markers people are using to mark tubes/flasks/bottles in the lab which are resistant to 80% ethanol. Have looked at the lab specific markers which cost up to $60 but there has to be a cheaper alternative?

pic unrelated
9 posts and 1 images submitted.
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I used to use crayons. Is this to claim ownership of glassware or to label?
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>>9153979
Both
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>>9153994
Crayons are damn near impossible to get rid off but pencil works well on the rough white glass areas. You can also scratch your name on too.

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How do you deal with people that are heavily into this whole "naturalistic" pseudo-scientific movement, spearheaded by snake-oil salesmen?

I have a co-worker that constantly goes on about "essential oils" and other such nonsense, and refuses to listen to reason, believing that they and other such supplements are "all-natural" and thus good for them, despite lacking any evidence that actually shows it. They frequently go on about juice cleanses and "detoxification" and other such pseudo-science garbage. Even heard her blabbing on about this guy named "Dr. Axe," whom I proceeded to look up, and is (not shockingly) not an actual doctor, but labels himself as one, and sells the typical snake-oil supplement products and "cure-alls" for autism and whatnot. How do you convince someone that this guy is a scam-artist, selling his products to incredibly dumb / gullible people without offending said person, is it even possible? Apparently this tool tells people to eat bentonite clay as well, claiming that it "detoxifies" heavy metals in the body, despite the clay itself containing many heavy metals. Tried telling her how I looked the guy up, how he's not an actual doctor, but they don't care, because the "products work!" based on her own experience of course, oh and doctors are also wrong sometimes and big pharma is evil, therefore these snake-oil salesmen definitely deserve her money.

pic related, It never ceases to amaze me how people can actually fall for this garbage.
31 posts and 2 images submitted.
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>>9153871
There is no cure for brainletism that one can force on a brainlet. You can help them along but brainlets have to find their own way, or remain as they are till death. Usually the latter is the path taken.
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>>9153871
Like many things, some of it is true and some is false.

The government has been placing strict regulation on how these types of things can be marketed. While this is a good thing, I do think that (like all lies) much of what is being said about naturalistic treatment is true to some degree. There are antibacterial, antifungal, and antiviral plants that can greatly speed up recovery time from disease, and the oils of said plants can help with sanitation and recovery. There is some merit to the claims (these same sorts of things did start medicine after all) but they have not been extensively researched. I think that thorough research will greatly improve our knowledge of the limits and appropriate use of these natural medicines. Penicillin is a naturally occurring medicine after all.
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Placebo effect is pretty powerful. Hopefully your coworker doesn't take anything which is actually harmful.

Find ONE fucking flaw.

Protip: You fucking can't.
22 posts and 7 images submitted.
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>special relativity
>pick is general relativity

you should leave physics to the big boys, goy.
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>>9153856
well, i dont know what R, a, b stand for
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>>9153866
>Has terrible grammar and spelling.

I am glad you chose physics instead of English, my friend.

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What would happen to you if you were lost in the wilderness and had a dislocated shoulder? What would the long term affects be?
7 posts and 1 images submitted.
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>>9153845
Death. If the dislocation didn't just result in massive internal bleeding then having a viciously painful arm that cannot be used would mean you couldn't get food, walk far or make shelter.
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>>9153845
You must attempt to fix it straight away. It can get a lot worse, if you leave it. You can also make it a lot worse by trying to reset it. Sometimes the damage will be too great that it doesn't matter what you do, you'll just die eventually.

At worst you will die due to extra damage (but no the dislocation itself).
At best you will reset your shoulder with minimal extra damage, you have to allow it to heal after the reset so making a sling is necessary too. It would be extremely hard to reset your shoulder in the wilderness alone. If you had someone with you it'd be a lot easier.
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>>9153845
pain

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ITT actually good YouTube videos about Science & Math

https://www.youtube.com/watch?v=T647CGsuOVU
8 posts and 1 images submitted.
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>>9153797

No, this soft-happy guitar nu-male shit is garbage of the first order. We might as well again have a negro with a The Weekend haircut loudly leading us that That's The Number That Remains. Fuck that.
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>>9153822

this is a good post.
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>>9153822
rub one off and try posting again
https://www.youtube.com/watch?v=o3s157d2MOE

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Guys, the one thing I don't get about the reinmann sum is that you are somehow calculating infinite f(x) values aka infinite points to then multiply by the shrinking dx. How can this be though it seems like infinite work to have to evaluate every single f(xsubi)
8 posts and 1 images submitted.
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And yet we get one definite answer that is the area. The logic makes sense except for how we are able to calculate the infinite f(x) values for the function
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A Riemann sum is just a particular instance of an infinite series. You can prove that you can take an arbitrarily small minimum length of the rectangles and demonstrate that it is arbitrarily close to a certain sum and we take that to mean something. Because it does. It means something is true for every conceivable Riemann sum, so when you use something against any theoretical Riemann sum (which is implicitly done through standard applications of integration), the conclusion you made is true.
>>
It isn't actually doing all that work, yes it would be impossible to do for for example
f(0.000000001)dx + f(0.00000000002)dx + ...

As a matter of fact the above would not work because the x values are infinitely small to get the precise area.

What the rienmann sum is saying is that this seemingly infinite work ends up actually being a limit as your n approaches infinity. that's what's happening.

Why is it the more science you learn, the more things seem meaningless? Pic unrelated
21 posts and 1 images submitted.
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Because you had constructed a vast network of artistic, aesthetic explanation for things and without being entirely conscious of it, your understanding of how things really work tear down those ideas one after the other like a robot walking through spider webs. You feel a sense of loss for these artistic sentiments and interpret that sense of loss as meaninglessness.
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>>9153581
Damn
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>>9153575
If you have to explain reality, there is no reality.
https://www.youtube.com/watch?v=DOP-2ulq2bk

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Do you know of any relevant and exemplary projects, studies, texts, books or textbooks?
18 posts and 3 images submitted.
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Am sporadically working on this:
https://seedartificialintelligence.org
And looking for additional content...
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>>9153591
>https://seedartificialintelligence.org
How to get involved? Am interested.
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>>9153591
>>9153605

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What are your opinions on the recent solar activity? I heard you were the smartest people on 4chan, should we be worried?
9 posts and 3 images submitted.
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>>9153556
Nah
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>>9153556
Gonna hide out in my basement and turn off all electronics. Wont be getting that cancer

https://www.youtube.com/watch?v=pQXu4JmbvzU
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What are the chances the sun's going to radically change its billion-year-long practices in your lifetime? And what are the chances that anything that we've done as a species has any effect of that massive self-sustaining engine 100 million miles away?

I don't know what the "recent solar activity" is, but whatever's happening it's just random variance.

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http://www.youtube.com/playlist?list=PL2UdBNAbnypuVJODDIHA9r0CMgmhMqFiC

This can't possibly be real so is it cgi or a type of animal?
15 posts and 1 images submitted.
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>>9153551
CGI

You never see the top of the container while he's moving it or dropping food in. Meaning the "container" is probably just a fish-tank he taped a green screen to.
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yes this is obviously fake, how would chicken mix with human?
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>>9153565
Well in one video he does rotate the tank. It just seems fucked up however the one he killed made me kek

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How can you tell if you really know something vs. if you just studied it enough to pass it on a test?
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Explain it to someone
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>>9153579
This. It's all fine and dandy when you are looking at the definition or the distilled essence of a concept on paper, but if you close the book or turn the paper upside down and you are like "uh...a determinant of a matrix represents... uh ... it's like..." then you know.
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>>9153642
determinants represent a fuckton of things so just pick and choose one

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Could you guys shed and share more information on neurons and brain, like articles, PDFs, links etc, but more importantly your point of views.

1.)types of neurons.
2.)a detailed biology of neurons.
3.)internal working of neurons.
4.)evolution/origin of neurons
5.)Share interesting medical cases regarding neurons and brain.

Also, can we discuss about different regions of brains, like making a list of brain regions with their respective job/operation, since it's still not thoroughly understood by today's medical community , your own individual opinion are welcomed
9 posts and 1 images submitted.
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>>9153501
bump
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>>9153501
a good place to start is the dual-stream hypothesis. it applies to every sensory system in our brain plus the prefrontal cortex. and i guess knowing where each of the primary sensory areas and motor areas are.
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>>9153673
nice, i am reading it on wiki, do you have any pdf/article which explain neurons in detail?

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Is full genetic engineering, to the point where we make complete designer babies and can select even minor aesthetic or mental traits, without any real drawbacks, even possible, or physically realizable? We may be able to modify certain small things, sure, but large-scale genome modification seems very risky.
Could we possibly model or test/account for all of the inter-genome interactions, how different genes affect other ones, etc. to make sure it's safe and get to that point? Or will it actually be impossible or close enough to it to essentially make it that way, at least for now?
15 posts and 1 images submitted.
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>>9153488
take any junior or senior level biology class and find out
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>>9153488
It's very possible just limited by technology at the moment.
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>>9153528
How do you know that though? We haven't attempted or studied anything near the level of what I'm talking about yet.
>>9153503
That doesn't help, can you offer some explanations or ideas given in those classes?

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