[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports / report a bug ] [ 4plebs / archived.moe / rbt ]

2022-06-09: Search is working again.
2022-05-12: Ghost posting is now globally disabled. 2022: Due to resource constraints, /g/ and /tg/ will no longer be archived or available. Other archivers continue to archive these boards.Become a Patron!

/sci/ - Science & Math

View post   
View page  Next    

[ Toggle deleted replies ]
File: 11 KB, 800x893, 800px-Uranium-hexafluoride-2D-V2.svg.png [View same] [iqdb] [saucenao] [google]
14619264 No.14619264 [Reply] [Original] [archived.moe]

Prove you are truly intelligent. What polymer would you contain UF6 in.

>> No.14619270

Pretty sure you can contain it in a plastic baggy no problem

>> No.14619274


>> No.14619275

>prove your intelligence with this esoteric pop quiz
Yup, that's exactly how that works.

File: 170 KB, 1600x1063, Noam-Chomsky-2010.jpg [View same] [iqdb] [saucenao] [google]
14619256 No.14619256 [Reply] [Original] [archived.moe]

Explain to me why his theory on innate cognitive model for language is not absolute shit, I'll wait

>> No.14619265

Trump derangement syndrome turned this guy's brain to mush for most of the last decade.

File: 11 KB, 271x186, download.jpg [View same] [iqdb] [saucenao] [google]
14619202 No.14619202 [Reply] [Original] [archived.moe]

the Filiariasis is spread via mosquito bite, and it causes some awful stuff to the body. I need some feedback for my college work i would be very glad if i received some.

>> No.14619260

I'm no doctor but it looks like some Krokodil could cancel that out

File: 1.57 MB, 4032x3024, IMG_20191107_223221049.jpg [View same] [iqdb] [saucenao] [google]
14619168 No.14619168 [Reply] [Original] [archived.moe]

Is microgreens the food for space colonists?

File: 90 KB, 800x800, 3a04ab12.jpg [View same] [iqdb] [saucenao] [google]
14619126 No.14619126 [Reply] [Original] [archived.moe]

If you have some mass of iron and some mass of water, and both are in zero degrees Celsius, and you use the same amount of energy to heat up both into 100 degrees Celsius, which were the masses of the water and the iron?

3 replies omitted. Click Reply to view.
>> No.14619174

About 3.50

>> No.14619198

Infinite answers possible. The ratio of the masses has a unique solution. Also the question is ambiguous because depending on atmospheric pressure 100C could be just below boiling point or just above which would use less energy, but the metal would not change state (I'm assuming it's a human survivable pressure).

>> No.14619208 [DELETED] 

Yeah it was a kind of trick question. But like you said you could still solve the relationship between the masses, like if the masses are X and Y, you would could have an equation like X = Z*Y where the Z would have a unique value. And I guess you could assume standard temperature and pressure if those are not otherwise specified.

>> No.14619212

Yeah it was sort of a trick question. But like you said you could still solve the relationship between the masses. For example, if the masses are X and Y, you could have an equation like X = Z*Y where the Z would have a unique value. And I guess you could assume standard temperature and pressure if those are not otherwise specified.

>> No.14619248

specific heat of water: 4.18 J/g/C
specific heat of iron: 0.45 J/g/C
ratio of water to iron is .45/4.18

File: 146 KB, 602x625, main-qimg-7466ec80bc225b2ed45cca2166200773-pjlq.jpg [View same] [iqdb] [saucenao] [google]
14619056 No.14619056 [Reply] [Original] [archived.moe]

Idk how often you guys get this thread, but could it, especially in-line with present seismological findings?

>mythological accounts of subterranean civilizations such as Shambhala
>some evidence that could support their existence such as the artefacts found by Carlo Crespi in Ecuador

Evidently subterranean civilizations doesn't mean that a hollow earth exists, but it's cool to link the two together. I just want Agartha to be real bros.

1 replies omitted. Click Reply to view.
>> No.14619067

No. If it were hollow it we'd be able to tell. For one, the mass of a hollow sphere is less than a solid one.

>> No.14619070

how the FUCK would a hollow earth form or remain stable?

>> No.14619083

Then a toroid of some sort. I'm asking you.

>> No.14619137

Look at Saturn. The catch is the gas doesn't have enough mass to hold us.

>> No.14619149


File: 1.04 MB, 1280x720, image_2022-07-02_072345.png [View same] [iqdb] [saucenao] [google]
14619021 No.14619021 [Reply] [Original] [archived.moe]


>> No.14619045

the animals alive so there no toxins?

>> No.14619048

but they eat my rice too slow
a dont want the animals

File: 14 KB, 243x207, images (1).jpg [View same] [iqdb] [saucenao] [google]
14619007 No.14619007 [Reply] [Original] [archived.moe]


3 replies omitted. Click Reply to view.
>> No.14619019

>What's science fiction about?
The tools you're going to use to answer the question you're asking.

>> No.14619022

the most fundamental thing about this discussion is that it was started by OP who is a fag.
the fundamentals belie both the mind and the universe.
so its probably faggotry

>> No.14619076

The interpretation of OP image is deffinitly God proving itself, a little, you made it this stage of powerful observation, check it out, look what I did.

>> No.14619079

Those are such a rare combed through selection of data to come across the astro look alikes

>> No.14619120
File: 5 KB, 177x284, abc.jpg [View same] [iqdb] [saucenao] [google]

>he doesn't know

File: 43 KB, 850x585, 1649131544133.jpg [View same] [iqdb] [saucenao] [google]
14618947 No.14618947 [Reply] [Original] [archived.moe]

>inb4 applied physics

>> No.14618976


>> No.14618977


>> No.14618986
File: 33 KB, 505x550, 1650939883829.jpg [View same] [iqdb] [saucenao] [google]

>tfw 3rd year chemistry student
I love chemistry but I have a constant looming feeling that I'm getting a waste degree and fucking myself over long term. If I was going to change to something better what are some options at this point?

>> No.14618991

its not a waste, just for its difficulty its not worth it
if you love chemistry then its fine, there are far far worse degrees

File: 78 KB, 499x499, 76ecd0fbbb0a4f0ae058a284afcba4ee--meme-party-pepe-rarest.jpg [View same] [iqdb] [saucenao] [google]
14618944 No.14618944 [Reply] [Original] [archived.moe]

Any ideas on stopping the universe from ending (astrophysically speaking)? And is such a thing possible with our limited tools?

2 replies omitted. Click Reply to view.
>> No.14618980

Sure, stop entropy or stop time. Good luck.

>> No.14619012

The Omega Point is a term Tipler uses to describe a cosmological state in the distant proper-time future of the universe. He claims that this point is required to exist due to the laws of physics. According to him, it is required, for the known laws of physics to be consistent, that intelligent life take over all matter in the universe and eventually force its collapse. During that collapse, the computational capacity of the universe diverges to infinity, and environments emulated with that computational capacity last for an infinite duration as the universe attains a cosmological singularity. This singularity is Tipler's Omega Point.[6] With computational resources diverging to infinity, Tipler states that a society in the far future would be able to resurrect the dead by emulating alternative universes.[7] Tipler identifies the Omega Point with God, since, in his view, the Omega Point has all the properties of God claimed by most traditional religions.[7][8]

Tipler's argument of the omega point being required by the laws of physics is a more recent development that arose after the publication of his 1994 book The Physics of Immortality. In that book (and in papers he had published up to that time), Tipler had offered the Omega Point cosmology as a hypothesis, while still claiming to confine the analysis to the known laws of physics.[9]

Tipler, along with co-author physicist John D. Barrow, defined the "final anthropic principle" (FAP) in their 1986 book The Anthropic Cosmological Principle as a generalization of the anthropic principle:

Intelligent information-processing must come into existence in the Universe, and, once it comes into existence, will never die out.[10]
One paraphrasing of Tipler's argument for FAP runs as follows: For the universe to physically exist, it must contain living observers. Our universe obviously exists. There must be an "Omega Point" that sustains life forever.[11]

>> No.14619072

>According to him, it is required, for the known laws of physics to be consistent, that intelligent life take over all matter in the universe and eventually force its collapse.
This is what Sci-fi does to people

>> No.14619087

There's precisely a 0% chance of us doing anything.
You can dream all you want about some dumb scifi future tech that weaponises black holes, but in reality, even 1000 years from now, we'll still be powerless against earthquakes and tsunamis, never mind the very universe itself pulling itself apart lol
If the sun was moved a little closer to the earth, just it's mere passive existence within our proximity would spell the certain doom of all life, what do you think of stars billions of times bigger? The entire universe?

>> No.14619102

The only true constant is eternal change

File: 161 KB, 800x420, 1145a230-a60b-11ec-928c-79c2605d160c_800_420.png [View same] [iqdb] [saucenao] [google]
14618943 No.14618943 [Reply] [Original] [archived.moe]

how long till science will be able to de-age people turn back the clock towards their younger self

1 replies omitted. Click Reply to view.
>> No.14618981
File: 68 KB, 504x716, soys all do this.gif [View same] [iqdb] [saucenao] [google]


>> No.14619042

That's a rough picture, god damn.

>> No.14619065

Technically experiments have already succeeded. The draw back was increased risk of cancer for the revived cells.

>> No.14619073
File: 221 KB, 591x646, 1656209609129.jpg [View same] [iqdb] [saucenao] [google]

>posting the edit

>> No.14619210

so when will we have solved cancer then?

File: 583 KB, 576x814, 1649294853099.png [View same] [iqdb] [saucenao] [google]
14618876 No.14618876 [Reply] [Original] [archived.moe]

Hey /sci/ question came in my head that started bothering me.
So an object moving at relativistic speeds experiences time slower than everything else.
Does this mean it effectively takes longer to go somewhere near the speed of light?
Like I walk to my mailbox and back and it takes a minute. But I warp drive to my mailbox and come back and 60 years have passed and the bank foreclosed on my house. Does this mean we shouldn't even be trying to reach these speeds? Its basically just an incredibly inefficient time capsule.

5 replies omitted. Click Reply to view.
>> No.14618950

Ah k, American humour. Not funny.

>> No.14618966

its not supposed to be funny, retard. stop sucking Americas for two seconds and learn english.

>> No.14619005

That’s not how it works.
If you go to the sun (8 light minutes away) at relativistic speeds, for you, only a few seconds have passed. but 8 mins passed from when you started your journey and when you got to the sun. So in your example, you get to your mailbox instantly and a few nanoseconds have passed

>> No.14619097

No it means that if you go to the mailbox near the speed of light, you experience it as if you are going faster than the speed of light, but the world around you is aging faster, and when go get back to the house everyone else has lived longer than you did since you last saw them. So if we could keep accelerating at 1 G we could get to the edge of the galaxy during our life time but it would have aged 1000s of years by the time we got there.

>> No.14619135

No, it is incredibly useful. If you want to get somewhere, like another star system, you use time dilation and length contraction to effectively shorten your trip. As you speed up the observed distance between you and the star system shortens, while your relative velocity remains the same. This means you can make a light-year journey in less than a year, if you are on the ship that is. To outside observers it will take you a whole year to actually reach the star system, but you will have aged less than a year. If you wanted to colonize a habitable world 200 light years away, you wouldn't have to prepare for multiple generations of people living and dying on the colony ship. You would just need the people you sent originally on the mission, given you can accelerate the spacecraft close to the speed of light. Also, warp drives don't cause time dilation as you aren't physically moving to another location, you are instead moving the space around you.

File: 63 KB, 755x708, FJee7wvXsAIAxH1.jpg [View same] [iqdb] [saucenao] [google]
14618848 No.14618848 [Reply] [Original] [archived.moe]

Is fire a plasma?

7 replies omitted. Click Reply to view.
>> No.14619096

me obviously

>> No.14619104

In a plasma some of the atoms and molecules are not electrically neutral. They are ionized but usually its just a fraction like 0.1% of all atoms would be ionized. In a place like the center of the sun or a Tokamak they would be 100% ionized. Both are still called plasma according to current semantic conventions

>> No.14619105

Incandescent gas is also plasma. What makes it plasma is having ionized particles

>> No.14619106
File: 27 KB, 640x533, 1652543012492.jpg [View same] [iqdb] [saucenao] [google]

Does /sci/ know anything?

>> No.14619129

in H2O with no impurities, .00001% of the H2O atoms ionize into H and O ions. is water a plasma?

File: 129 KB, 620x461, imagen977.jpg [View same] [iqdb] [saucenao] [google]
14618826 No.14618826 [Reply] [Original] [archived.moe]

There were an anon here who found Volkswagen was frauding data for green gibs after his research indicated their numbers weren't adding up. His advisor (a woman) noticed this and was giving bad signs.

Did he get suicided? Did he lose his grant? Did he make a go for it?

>> No.14619110

I remember him

>> No.14619262

There was an assassination attempt, and he moved to another country and got into witness protection.

File: 534 KB, 1280x720, mole rat mic-1280x720.jpg [View same] [iqdb] [saucenao] [google]
14618803 No.14618803 [Reply] [Original] [archived.moe]

We should spliced our DNA with that of the the naked mole rat to grant us radiation resistance for long interstellar journeys. Those things are amazing and I’m completely on board with joining genetic forces. With luck we’ll also inherit other traits, like proportional longevity, hibernation in extreme low-oxygen environments, and the ability to absorb parenting hormones through eating the queen moles feces. Maybe we could add some tardigrade traits too.

1 replies omitted. Click Reply to view.
>> No.14618822

>long interstellar journeys.
Ai robot cyborgs

>> No.14618824

>interstellar journeys
space is fake, stars are just luminaries in the firmament
star wars isn't real and you will never go to space

>> No.14618830

Why can you see saucers on the moon?

>> No.14618835
File: 71 KB, 200x177, Omar.png [View same] [iqdb] [saucenao] [google]


After the Great Collapse, only the mighty survived. Two centuries of war saw the rise and fall of many empires. It was the age of heroes, the battle-fired crucible of all subsequent history. In the end the Earth was no longer green. Nothing survived on its surface other than a few embers of humankind. But from this crucible emerged the master works of evolution. They were fit not just for the new Earth, but for the most barren corners of creation. The glory of humanity would henceforward stretch on through time and space to the vanishing point of eternity.

>> No.14618836

the saucers are for the cheese

File: 50 KB, 1024x675, 1647474527015.jpg [View same] [iqdb] [saucenao] [google]
14618665 No.14618665 [Reply] [Original] [archived.moe]

why is a magnetical field curved?

4 replies omitted. Click Reply to view.
>> No.14618837

If you take the most powerful (non electro magnets as that would skew the purity of the query) magnets (in vacuum) that can be formed in the world, and take very strong hydrolic machines to hold them and slowly move them together N pole to N pole, so there is repulsion: what is happening between them, are photons being emitted? Are the fields shaking? Is energy detected?

>> No.14618959

An interference pattern. Photons love making those.

>> No.14618965

Atoms. Lots of them.

>> No.14618974

There are no single poles. There's always a north and a south. Reason why is the electron leaves one place. That has too much electron. The opposite side of that wants an electron.

>> No.14618979

The only thing a magnetic field actually does is, it makes everything spin together with its source. When its source moves in a closed trajectory, everything affected by the field gets attracted to the center of this trajectory.

File: 305 KB, 1080x1323, IMG_20220603_233301.jpg [View same] [iqdb] [saucenao] [google]
14618663 No.14618663 [Reply] [Original] [archived.moe]

how to prepare for MIT(alone)?

1 replies omitted. Click Reply to view.
>> No.14618692

This but exclusively /pol/

>> No.14618760

It's harder to get into university than staying there. Just enjoy your summer break because it might be the last one you get.
t. PhD who hasn't had a proper summer break in half a decade

>> No.14618985


>> No.14619268

It's ivy league..everyone gets an A just for showing up if the tuition is paid

>> No.14619269

>hasn't had a proper summer break in half a decade
oh no, just like real life

File: 12 KB, 500x500, iron-bar-500x500.jpg [View same] [iqdb] [saucenao] [google]
14618613 No.14618613 [Reply] [Original] [archived.moe]

This is an iron bar, full of atoms...

After 1 day, the same atoms will be in the iron bar?
Will they change places?

After 1 week, the same atoms will be there, in the same place?

And after 1 year?

19 replies omitted. Click Reply to view.
>> No.14619134

This is the kind of stuff you wonder when you get bored enough

>> No.14619139

A numerically huge number of atoms would have been fucked by quantum shenanigans but it won't even register percentage-wise

>> No.14619144

yes, anon. thermal strain can move the atoms in the bar. but given "nice" conditions these atoms do not stray from their spot in the crystal lattice in their grain, and the grains return to their original position at the end of the heat/cool cycle.
supposing the iron was warm enough to literally bend under its own weight and buckle slightly, the grains would be permanently, PLASTICALLY, deformed from where they began.
magnetic fields do very little to the atoms.

>> No.14619152

your brain on meth

>> No.14619153

It could have some iron oxide. It's called rust

File: 8 KB, 429x392, real.png [View same] [iqdb] [saucenao] [google]
14618571 No.14618571 [Reply] [Original] [archived.moe]

In this thread we will appreciate the uncountably infinite set of real numbers, formalized not more than roughly 200 years ago while informally used for centuries and still holding strong to this date. Real numbers have revolutionized early calculus, are the fundament of modern analysis and are involved in nearly all areas of mathematics.

19 replies omitted. Click Reply to view.
>> No.14619095

I did some research on this topic earlier today and found the very cool result of induction on the positive reals being a thing https://math.stackexchange.com/questions/4202/induction-on-real-numbers

>> No.14619112

Give me pi/sqrt(2) apples. I'll wait

>> No.14619127

>gives anon two apples and a piece of a third
prove i didn't

>> No.14619173

What is the first rational number after 0?

>> No.14619226

1 - 0.999... where "..." is the diesel engine

File: 55 KB, 657x527, tumblr_pq8ebdoPJO1uvq3s5o1_1280.png [View same] [iqdb] [saucenao] [google]
14618563 No.14618563 [Reply] [Original] [archived.moe]

Any linguist bro?

I tried to do some basic calculations using what I can read on google about the Zipf law.
My goal is to determine what's the magical number of words you need to memorize to understand 99% of words of any random text.

From my own calculations, It seems that if you start with 100 words being 50% of any text, It scales to 600 words being 99%.

My goal is to determine the amount of verbs and nouns I need to learn in both cathegories (how many verbs and nouns I need to learn) to reach the 99% of nouns and verbs that will appear in any random text.

My calculations boils down to 600 words in verbs and nouns categories, but I can't confirm to be 100% sure.

View post   
View page  Next