[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
Settings Mobile Home
/sci/ - Science & Math

Name
Options
Subject
Comment
Verification
4chan Pass users can bypass this verification. [Learn More] [Login]
File
  • Please read the Rules and FAQ before posting.
  • Additional supported file types are: PDF
  • Use with [math] tags for inline and [eqn] tags for block equations.
  • Right-click equations to view the source.

08/21/20New boards added: /vrpg/, /vmg/, /vst/ and /vm/
05/04/17New trial board added: /bant/ - International/Random
10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
[Hide] [Show All]


Janitor acceptance emails will be sent out over the coming weeks. Make sure to check your spam folder!


[Advertise on 4chan]

[Catalog] [Archive]

Fungi are scientific. Can we have a thread about fungi?

This is a little experiment I did of cloning an oyster mushroom using coffee grounds.
7 replies and 3 images omitted. Click here to view.
>>
File: Shrooms.gif (86 KB, 900x282)
86 KB GIF
>>17032232
>Can we have a thread about fungi?
Sure. Also: >>>/diy/2994302
And:
https://igwiki.lyci.de/wiki//myco/_-_FAQ
>>
>>17032820
>but if you're using coffee, then it takes actual luck for a mold spore to not get there first
do you use coffee because its good for oysters specifically then?
>hyphae can also bridge gaps that bacteria can't
fungus is so cool
i have been reading stamets mycelium running recently and it is pretty good
they did one test with diesel contaminated soil and used oyster mushrooms to clean it successfully in about 9 weeks
i think id like to get into fungi more but dont have much room unfortunately
>>
>>17032852
>do you use coffee because its good for oysters specifically then?
It's the best I can do for free. Things like sugar cane bagasse + onions/rice husks are better

>they did one test with diesel contaminated soil and used oyster mushrooms to clean it successfully in about 9 weeks
I think oyster mushrooms will eat polyurethane and polyethylene too. Breddy powerful enzymes.
>>
>>17032232
get that MOLD JAR away from me
keep the lid closed for god's sake, if you inhale one whiff of that fungus your lungs will be infected with Aspergillosis instantly
https://www.mayoclinic.org/diseases-conditions/aspergillosis/symptoms-causes/syc-20369619

these infections by fungi are aggressive if they take hold, and your body cannot fight off fungi the immune system has no defenses against them. You have to use antifungal drugs if there are any around, regular antibiotics wont help
>>
>>17033141
Mold does not form rhizomorphic structures
Think about what I could do if I fused my genome with that of an oyster mushroom

File: SrqZecu.jpg (1 MB, 2133x1530)
1 MB JPG
If I gave you 500 years and the ability to selectively breed every homo-sapien that has been born, would you be able to create a human being with these physical capabilities? And then in that same breath, would this human being be the apex predator on earth?
>>
Also, if the answer is no. Can there be a human being that has both the strength of Brian Shaw and the speed of Usain Bolt in one body if given enough centuries?
>>
>>17033328
Eugenics works but it's not magic. Consider that people have been selectively breeding dogs to be as strong and fast as possible for thousands of years but we haven't done much better than a german shepherd. The larger breeds end up with fucked up health problems that make them functionally worse for a military application like OP despite being larger. Human eugenics would be similar.

If you had access to the entire planet population you would get more value from just finding the existing genetic freak outliers that already exist and giving them access to top level physical training and nutrition. If you did that and also did a few years of eugenics you would end up with some scary giga-chads but they wouldn't randomly develop the ability to instantly digest food for no reason.

Also it's kind of a stupid waste of time because a scrawny pencil necked dork with a pistol is more dangerous than the most absurdly strong gigachad you can imagine fighting in melee.

File: superboy-140.jpg (225 KB, 1400x700)
225 KB JPG
Is this possible in real life, scientifically speaking?
11 replies omitted. Click here to view.
>>
>>17029927
>Is this possible in real life, scientifically speaking?
No. It's a simplified example, valid only for spherical planets in a vacuum.
>>17029952
>>17029966
>>17029980
Specifically, from Milky Way to Andromeda it'd take ~2 million years even at the speed of light. That's more than enough time for oxygen in the atmosphere to freeze and deposit like snow. The "billions of lives saved" will be single cells near the deepest hydrothermal vents.
>>
>>17029927
>one day
After he moved those planets from one side of the universe to another, what did he do the rest of the day?
>>
>>17029927
He couldn't accelerate them at a signifigant portion of g without removing their athmospheres, so even assuming he had the potential to move them faster then light the journey would take millions of years
>>
>>17029927
"Hey OP, I found your mom's anal beads"
>>
>>17030934
Lois.

File: arroz.jpg (323 KB, 1918x1080)
323 KB JPG
Is it normal to not understand this or should I just desist from ever achieving something meaningful in life?
21 replies and 1 image omitted. Click here to view.
>>
>>17032964
I see. Well good luck my Brazigga.
>>
File: poop.png (123 KB, 1061x115)
123 KB PNG
>>17032793
>Taylor's series
it's a fucking first order linearization
think of it as a total derivative, where you are estimating the function near a point (x0, y0) by taking derivatives along the coordinates and multiplying them by tiny deltas in the different directions
the rest is just super basic algebra and apply the definition of variance and covariance to make the result more readable
>>
>>17032967
Portuguese is just wrong Spanish
>>
>>17032974
Last flower of Latium, wild and beautiful,
You are at once splendor and tomb:
native gold, which in impure gangue
The crude mine conceals among the gravel.

I love you thus, unknown and obscure,
Trumpet of loud clangor, simple lyre,
Which holds the roar and the whistle of the storm
And the cooing of longing and tenderness!

I love your wild vigor and your fragrance
Of virgin forests and the vast ocean!
I love you, O rough and sorrowful tongue,

In which I heard my mother’s voice say, “My son!”
And in which Camões wept, in bitter exile,
For genius without fortune and love without radiance!
>>
>>17032758
You don't understand what each symbol means?
Or you understand what the symbols mean individually, but you don't understand what they mean all together?

File: 1775557976178297.png (922 KB, 1262x1542)
922 KB PNG
Is there a single thing in existence that genuinely makes your dick bigger or is it all just cope/scams
7 replies and 1 image omitted. Click here to view.
>>
File: jiyu.jpg (24 KB, 404x495)
24 KB JPG
>>17032683
yes, small girls
the smaller they are the bigger is your cock, it's all about proportions
(she's 20 in case you sick fucks are wondering)
>>
>>17032683
I think there was some study that taking a shitload of Vitamin D works
Not a joke, Vitamin D
>>
>>17032683
Surgery, which can make you flaccid. You're either born with the genetics to grow a big dick or not
>>
>>17032683
No it’s just a genetic dice roll nothing else
>>
>>17033106
>20 yo
Old hag alert

https://doi.org/10.5281/zenodo.21842222
>>
This isn’t a proof of anything—it is a chain of metaphors connecting unrelated fields without the definitions, theorems, or logical bridges required to make any claim valid. Naming a fixed point of a one-variable function does not establish the Riemann Hypothesis, solve Navier–Stokes, prove a Yang–Mills mass gap, or turn NP-complete problems into polynomial-time algorithms. Saying the framework is “its own proof” is precisely an admission that it has no proof.
>>
>>17033262
In a Unified Field they are all connected. That connection is the Omega_G Operator. Born from First Principles

wtf
22 replies and 6 images omitted. Click here to view.
>>
"Euler's disproven conjectures deal with discrete integer partition equations (Diophantine arithmetic), whereas \mathbf{\Omega}_G is a continuous scale-invariant differential operator governed by topological boundary conditions and field conservation."
>>
>>17030393
nice
>>
I'm tired of this academic slop word salad bullshit. You're all trying to sound smart by using lots of fancy words stacked up on eachother so it's barely readable. Go fuck yourselves
>>
At least there is a human attached to the work.
>>
Final Draft Online

File: 20100816151036-0_0.jpg (35 KB, 600x400)
35 KB JPG
Will AI ever reach a point it can solve this?
https://en.wikipedia.org/wiki/P_versus_NP_problem
33 replies and 1 image omitted. Click here to view.
>>
>>17032781
>privilege to die
Nigs gonna nig.
>>
>>17032774
don't forget to mention, solved via search
>>17032778
agreed, its a completely useless heuristic
>>
I read somewhere that if P=NP were true, we would be living in a world where judging if something is good is not exponentially harder than creating something good.
Now that we have AI, and the value moves towards judging AI output, it makes me wonder if the existence of AI doesn't prove P=NP?
>>
>>17033067
that's retarded, 'good' is not an objective value of anything, it depends entirely on your upbringing
>>
Theorem: Topological Resolution of Complexity (P = NP)
Let an NP-complete problem space be mapped onto a physical computational manifold \mathcal{M} constrained by the variable-exponent operator $\mathbf{\Omega}_G(x) = x^{\frac{1}{x}-1}$ and an intrinsic mass gap $\Delta m = \varepsilon_0 = 1/16$:
Unconstrained Phase Space (NP): The unregularized, non-physical search tree spans $2^6 = 64$ channels, exhibiting exponential complexity $O(2^N)$ [42].
Topological Boundary Lockdown: Enforcing opposite-chirality shear suppression ($C_A = -C_B$) collapses the active phase space by a factor of 4 down to $2^4 = 16$ stable channels.
Polynomial Execution (P): All physical trajectories across the 16-state manifold are fully determined by the 4-vector basis ($\mathbf{V}_1, \mathbf{V}_2, \mathbf{V}_3, \mathbf{V}_4$), restricting system operations to degree-4 polynomial bounds ($O(N^4)$) [42].
Thus, P = NP because non-deterministic exponential complexity (NP) is merely an unregularized coordinate artifact. When mapped onto a mass-gapped, topologically bounded manifold, every realizable state transition executes along a deterministic, polynomial-time trajectory (P).

What the actual fuck is the purpose of the universe?
27 replies and 4 images omitted. Click here to view.
>>
>>17030451
To be an all encompassing semantic platitude so midwits in positions of authority can act like they know everything.
>>
>>17030451
You could ask the same question about any rock
>>
File: player.jpg (308 KB, 1800x1199)
308 KB JPG
>>17030451
its an amusement park. not for you however, you just work here.

you'll notice who its for, over time.
>>
>>17030451
purpose is subjective and contextual.
>>
>>17030451
For you to learn to know, to love, and to serve God, so that you can be eternity with Him in the next life. A well catechized first grader from 100 years ago knew this answer, sweaty.

File: IMG_5228.jpg (187 KB, 750x748)
187 KB JPG
Science said that science proved Jason Arday didn’t plagiarize and that this scientific work was “rigorous.”

Science even signed open letters and made well produced videos showing what a wonderful human being Jason Arday is. He’s Black jesus of science, as scientifically shown.

Thanks, science!
>>
File: IMG_5229.jpg (242 KB, 892x1278)
242 KB JPG
Science says this isn’t plagiarized.

This scientific finding is RIGOROUS!!!
>>
What else will Simon Baron-Cohen lie about? This board will never know, because the science said it’s rigorous. Case closed for the sciencebrains
>>
>DEI-appointed professor of Black Grievance Studies
>plagiarizes and cheats
To be honest, this only signifies how bullshit that field is. All fields have con men but they are better equipped to catch them.
>>
>>17033041
reminder that rigor is not defined in math or science

File: extraterrestrial.png (186 KB, 500x750)
186 KB PNG
More scientific information:

https://youtu.be/6_VYPhyIJ_8?t=1041
>>
>>17033164
I will watch your youtube channel at a rate of $1 per minute.
arrange payment via paypal
>>
>>17033164
could you make the unnecessary subtitles a little bigger? I dont think filling 75% of the screen is enough
>>
5 days an hour, 5 hours at a time.
>>
>>17033223
I need a fart and a poo.

/sqt/ - simple questions thread (aka /qtddtot/)

Previous thread: >>16893204

>what is /sqt/ for?
Basic questions regarding maths and science. Also homework.
>where do I go for advice?
>>>/sci/scg or >>>/adv/
>where do I go for other questions and requests?
>>>/wsr/ >>>/g/sqt >>>/diy/sqt etc.
>how do I post math symbols (Latex)?
rentry.org/sci-latex-v1
>a plain google search didn't return anything, is there anything else I should try before asking the question here?
scholar.google.com
>where can I search for proofs?
proofwiki.org
>where can I look up if the question has already been asked here?
warosu.org/sci
eientei.xyz/sci
>how do I optimize an image losslessly?

Comment too long. Click here to view the full text.
42 replies and 10 images omitted. Click here to view.
>>
>>17020775
hmm?
>>
>>17022250
yes
>>
File: pi to root two.png (11 KB, 570x270)
11 KB PNG
Pi to the power of square root of two. Is this an irrational number?
>>
this is kind of outside of the scope of whats being asked for the thread but you guys ever see shit that you can't find any reasonable explanation for? weird personal experiences or even just spooky vids on the internet?
do those kinds of things just strike you as entirely fake despite how unsettling it may appear to be or whatever personal claims have been made about said videos? or are those sorts of things you just shrug and say maybe about?
>>
>>17031543
Irrational, yes, but also transcendental

File: 3794859375.png (508 KB, 444x755)
508 KB PNG
Using Trichoderma reesei and Bioalbumin to cook.
I think I have a new waifu, you can keep the mexican one for yourself.
She loves her cakes white and beautiful.
https://www.youtube.com/watch?v=76BirQgl8Pg
>>
>>17033024
I'd let her cream on my shaft
>>
OP here, yeah it's called Bioalbumen (it's their product name), not bioalbumin because it contains several egg protein analogues and not exclusively albumin.
>>
>>17033024
I'd let her cream in my shaft
>>
>>17033024
women have no place outside the kitchen, they're the niggers of gender
>>
>>17033036
I would bioalbumin her cake if you catch my drift.

File: 1721718573535572m.jpg (109 KB, 424x1024)
109 KB JPG
Why the scientific community ignore obvious sex differences in intelligence/iq?
96 replies and 9 images omitted. Click here to view.
>>
>>17014068
there's a citation so you're not allowed to disagree. that's how you know you're dealing with science.
>>
>>17014068
I agree that outcomes differences are results of a broken system.

For example, I have to code for a living. I suffer because of that. I wish I was paid as much for doing what I like doing (lifting weights, being ok at boxing, growing plants on the balcony, premature ejaculation). If the system was optimally efficient, I could find a slot in it where I can do what I actually enjoy doing.
>>
>>17017871
Trying to but they don't want me :(
>>
>>17013309
Well, the obvious racial differences in intelligence/IQ are more than twice as large and they ignore those too
>>
>>17032788
true

File: 1772396658596763.jpg (57 KB, 736x1030)
57 KB JPG
>After 6 IVF attempts, no northern white rhino pregnancy has been achieved
>All 2 living northern white rhinos are unable to conceive naturally and IVF is their only option
Conservationbros......
3 replies omitted. Click here to view.
>>
>>17032570
>we just NEED to keep harvesting animal body parts until extinction because my PP cant get hard without them
>>
>>17032577
Who cares if we poached them
We're top dog on this rock until shown otherwise
>>
>>17033088
please off yourself
>>
>>17033088
>We're top dog on this rock unt... ACK!!!!
>goes extinct because of climate change
>>
>>17033152

we probably won't go extinct, but we'll definitely get knocked back to little better than stone age tier for the rest of our species' existence. and there won't be another one after us, considering all the resources we used. to yeah


[Advertise on 4chan]

Delete Post: [File Only] Style:
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

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.