Has anyone tried to shove the weak and strong forces into GR? I know EM is trivially in it, but don't know about the other 2.

>>16534732
>and
or*

>>16534732
The strong and weak forces require quantum field theories. We have had no luck incorporating any QFT into GR.

>>16534478
All the tea components I was originally interested in are water soluble. This does not rule out the possibility that the first steeping is enriched relative to the second steeping for kinetic or equilibrium reasons. I can't find anything on the oil dispersion mechanism.

Have quantum vaccuum fluctuations ever been measured in space? Do they vary with their proximity to matter?

>>16534744
>We have had no luck incorporating any QFT into GR.
effective qtfs can be incorporated, just not at the high energy limit.

>>16534810
> quantum vaccuum fluctuations
Depends what exactly you mean by that. We have measured the Casimir effect which would not happen without vacuum fluctuations. It's also the basis for Hawking Radiation but that is so weak, if it actually exists, we are unable to measure it. I guess the largest scale proof we have is the oscillations visible in the CMB.

Couple questions
1. What is wrong with the slit experiment where a laser shows interference patterns when shot one particle at a time? Like, what is the confusion here exactly? And why is that considered weird? If you watch this on mute it shows the setup pretty well https://www.youtube.com/watch?v=0ukdaIComZc
2. People use the world qubit to mean a quantum bit within a circuit for calculating quantum thingies. What is a qubit physically speaking?
3. People claim quantum bits can be entangled and then separated and then observed apart from each other and it collapses something. What exactly is physically collapsing? I can just write a 1 or 0 on two peaces of paper and give them to a friend and once he reads one he knows the other matches and the mystery collapses, but nothing else does. What's up here?
4. What is a quantum circuit, really? Wikipedia said something about how you can know the input of the gate from the output given. Is it something along the lines of a bunch of logic gates that feed forward but also simultaneously feed backwards and thus allow a function to settle into a solution rather than blurt out a solution? I just don't understand what's going on there.

I have a hard time understanding these things because there are 3 groups of knowledge on this. There are people who know the words and the pop culture regurgitated meanings of those words. There are people that know the math behind it and can actually use the computer terminal on these things. And there are people that actually understand what is physically happening within the circuit, they know the behavior of the materials and why they're setup the way they are.

Plz help. tysvm.

>>16534844
1. That video has nothing to do with either a single or double slit experiment. It's a delayed choice setup. So I have no idea what you are actually asking about.
> What is a qubit physically speaking?
2. What ever you can put into a two-state superposition. The physical hardware is almost irrelevant.
> What exactly is physically collapsing?
3. The wavefunction describing the entangled system. If that is physical or not, no one actually knows but it doesn't stop quantum computers doing their thing.

I've skip a lot, I know. But frankly most of your latter questions would require pages and pages of text to explain or entire term-long YT playlists. All you're going to get here is short pop-sci answers. This is /sqt/, not a graduate level physics course.

is borosilicate glass used for most experiments that involve heating strong acids and bases? i want to do hydrolysis experiments which involve heating these solutions, but i can't use a metal pot for the acids. i also heard that glass isn't good for heating strong bases.

are there parasitic primates?

>>16534884
Do NEETs dwelling in parents' basements count?

>>16534884
>are there parasitic primates?
I really wish I could answer that here, anon.

>>16534884
Considering what is Homo sapiens sapiens doing to this planet I am inclined to say ”yes".

>>16534796
>It is probably clearer to write the first term it in its more usual form 'E/c' where E is then the relativistic energy.
How is that any clearer tho? E makes sense, but what does it mean to divide it by c?
(And why does every retard who sets c=1 keep calling E/c the "energy," when it makes no sense dimensionally?)
I mean, mc at least makes a little more sense, even if it does technically imply that the particle is travelling through time at the speed of light

>>16535132
faggy answer

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I wanna get into go. Should I read some theory book to start, or just go play people online?

>>16534688
Does the positive half of the real number line count as a region or open connected set in the complex plane?

>>16536523
no

How the hell does carbon dating work?

"scientists have dated the artifact to around 4000 years ago"

How does this test give me an estimate of when the tool was made, and not give the age of the stone or the wood the tool was made of? This ruin is 3000 years old but the stone is millions of years old, wouldn't measuring the carbon tell me the total age of the stone?

>>16535624
When you play people online you will be learning mistakes the hard way when they deploy strategies against you. Better to just read a book, unless you are just trying to hard stat check yourself.

>>16534688
Mathfag (1st year in gradschool) who wants to learn biochem here, should I start studying QM, EM and Thermo (and if so, from what books?) or go straight to an introductary chemistry text (and if so, what?). Moreover, does higher math even have any applications to biology?

In Newtonian physics, is there any relationship between
>the conservation of momentum
[math] m_1 \left( \begin{matrix}
1\\
v_1
\end{matrix} \right)
+
m_2 \left( \begin{matrix}
1\\
v_2
\end{matrix} \right)
=
m_1' \left( \begin{matrix}
1\\
v_1'
\end{matrix} \right)
+
m_2' \left( \begin{matrix}
1\\
v_2'
\end{matrix} \right) [/math]
and the concept of
>frame invariance [of length]
[math] \left( \begin{matrix}
1 & 0 \\
-v & 1
\end{matrix} \right)
\left( \begin{matrix}
t-t\\
x_1-x_2
\end{matrix} \right)
=
\left( \begin{matrix}
0\\
x_1-x_2
\end{matrix} \right) [/math]
, or even just frame shifting?

>>16536692
If you're just doing biochem, do a dedicated biochem book. Nothing wrong with learning physics, but physics isn't biochem so there's gonna be a lot you're not gonna need and you'll be wasting time.

If you want physics texts, read Griffith's QM and EM - those are standard introductions, and very good. For thermo, there's no real standard. You could try to find one with good focus on biochem or chem topic, but i think most thermo books will always have something on chemistry since it's so relevant, prob around the Gibbs Free energy chapter and phase changes.

>>16536583
Carbon dating only works for once living things, since all living things need to intake carbon to survive. Once they stop living, they stop consuming new carbon, which means the old carbon left over decays.

If you want to date a rock or other stuff, there are other radiometric dating methods like lead or uranium.

>>16536751
No. I'm not even clear why you would think there would be?

>>16536952
Cause a Hamiltonian invariant to position implies momentum conserved in time. But I don't want hamiltonian.

For Newtonian, cause for all [math] V [/math],

[math] m_1 \left( \begin{matrix}
1\\
v_1 - V
\end{matrix} \right)
+
m_2 \left( \begin{matrix}
1\\
v_2 - V
\end{matrix} \right)
=
m_1' \left( \begin{matrix}
1\\
v_1' - V
\end{matrix} \right)
+
m_2' \left( \begin{matrix}
1\\
v_2' - V
\end{matrix} \right) [/math]

Clearly this is a shift in frame. But idk how the shift-in-frame-of-position matrix (length is invariant) leads to a conservation of momentum, or vis-versa.
(If this works, then you should be able to do this with rotations too.)

>>16536971
>idk how
*if it is true

>>16536971
> idk how the shift-in-frame-of-position ... leads to a conservation of momentum
You are getting into topics related to Noether's Theorem. I believe you can write the action using the Hamiltonian instead of the more usual Lagrangian though I am not familiar with it at all.

>>16536971
>>16536952
Also, for Special relativity, you can do a Lorentz Transform frame boost that preserve the inner products

(x,x) = (Ax,Ax)
(p,p) = (Ap,Ap)

>>16536983
im just more wondering more about the relationship between the frame-change matrix and if it at all or with any other conditions implies a conservation of momentum, in a more explicit form then just putting out Noether's theorem on the table. I just want to stay in Newtonian. If feels like energy has to be associated somehow (mass conserved), so I'm hoping someone knows the connection

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Is there a scientific explanation why my mom sometimes has days where she is super pissed for no reason? She is long past menopause btw.

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sup guys
my daughter has to make a 20 minutes oral
presentation about maths as her final high school exam and she asked me for some fun ideas but since I'm a retard I'm asking you
(her physics presentation will be about molecular cuisine)

>>16537166
is she eating and sleeping correctly?

>>16534884
I will say that the difference between a predator and a parasite is not a binary classification but a spectrum.
Humans are evolving from predatory mainly predatory practices to parasitic practices.
Humans mechanism of parasitism is memetic and semantic in nature.
A human parasitizes the semantic structure of another human in other to obtain benefits.

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If you know the angle of the Euler's disc relative to the surface it's rotating on, would you know how many revolutions per minute it's turning around its central axis (just to clarify what I mean by central axis, imagine it was like pizza and the central axis went through the middle being perpendicular to the pizza surface)?

Is there a formula for that and how would you figure that out? Or would you need more information than just the angle of the disc?

Another question. Imagine you know things like the force of gravity, the mass of the disc and its dimensions. Is it possible to have the frequency of wiggles as a function of the disc's angle (one wiggle being defined as a point on the circumference losing contact with the surface and making contact with the surface again)?

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>>16534688
Why won't this nigga vibe?

>>16535624
online-go.com has both puzzles and basic theory, I recommend going through their Learn to Play Go before beginning one of the puzzle tracks, like 'Cho Chikun Encyclopedia of Life and Death' series they host there. It's based on the book with the same title. Name's a bit odd, but the contents are basic to intermediate.
If you want to jump straight to playing, choose matches on 9x9 board. Easier to understand the picture, quicker to finish.

>>16537354
Because the dude isn't rational.

>>16537274
The revolutions per time is related to the magnitude of the angular momentum. The angular momentum as a vector changes in time to the torque at the point of contact. This gives you an equation that you can use to solve for the revolutions per time in terms of the angle.

How do I prove this?
[eqn]\int_{-\infty}^{\infty}\frac{\sin^2(x)}{x^2}dx=\pi[/eqn]

>>16537527
https://math.stackexchange.com/questions/13344/proof-of-int-0-infty-left-frac-sin-xx-right2-mathrm-dx-frac-pi2

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how can i find the solubility of ammonia in water or methanol at -50c and 200mbar? i can't find any data below 0c or 1bar
i think if i at least had data at the right temperature, i could use henry's law to account for pressure, but that data doesn't seem to exist either
is using van't hoff and then henry's the best approach? how accurate will it be?

i don't know much about chemistry. i could be missing something obvious

>>16534844
I don't have an answer to your questions, but in regards to your video about light and beam splitters, is the polarity of light essentially the current 'phase' experienced by the light?
If light behaves like a sine wave, is polarity determined by the wave 'going uphill' vs 'going downhill'?

And I think I've typically seen light's movement represented as a corkscrew/spring pathing, but is that just me misinterpreting the information, or would is it more accurate to describe it's movement as 'helical' in nature?

>>16537211
High schoolers know about complex numbers, so go beyond that and talk about other types, like dual numbers or split complex or quaternions or other hypercomplex. She can talk about the different ways to represent and write em when you move from a 1x1 matrix to a 2x2 or higher matrices. You can go beyond to Clifford algebras so now there are multiple versions. You can talk about a generalized Euler equation that leads to more generalized rotations. You can talk about how Euler's equation is the exponential map for a manifold that exponentiates a Lie group of objects to a Lie algebra, so like how you can use exponentiate quaternions to get an algebra of 3d rotations, so now you can rotate 3d objects like how high schoolers know normal complex rotates 2d when you take i*theta and exponentiate it. You can talk about how you can rotate spinors, and what the hell spinors are. At this point it's gonna be longer than 20 minutes so wtv.

If you want to stay with complex numbers, you can talk a bunch about the Riemann zeta function like it's development and how it became so important, and maybe generalize to L functions at the end.

Could also talk about group theory, algebras, or geometry. She doesn;t even need to learn much - just read a wikipedia on anything interesting and talk for 20 minutes

>>16537706
exponentiates a Lie algebra to Lie group*, my bad. Rotations are the groups, i*theta is the algebra

>>16537683
>i could be missing something obvious
You could indeed. Below 0°C, the water would be solidified as ice.

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>>16537752
>t. vonnegut

>>16537216
Now that you mention it, she doesn't sleep very well. But that's normal for old folks, isn't it?

>>16534874
BUMP!!!!!!!!!!!!!!!!!!!!!!!!

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>>16537211
>my daughter has to make a 20 minutes oral

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How do I solve these kinds of problems? Do I just make random derivations and hope for the best or is there some algorithm to check if a clause is derivable or not?

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Is it isomorphic to Z/p(p-1)Z? If no, what group is it isomorphic to?

p is prime, of course

>>16538360
I don't really know the field so I can't help here, but what is the answer supposed to be? I feel like it's b but since I don't know the actual intent/meaning behind the question that's basically just a guess based off of familiar syntax

lets say i have two functions, and i multiply them together and integrate over the entire domain to get a scalar, i.e.
[math] \displaystyle
k = \int_{- \infty}^{\infty}f(x)g(x)dx
[/math]
clearly this isnt exactly invertible; if i have k and f, theres infinitely many solutions for g. however, what if i assume g is a (finite) linear combination of some other known functions? i.e.
[math] \displaystyle
k = \int_{- \infty}^{\infty}f(x)(a_1g_1(x) + a_2g_2(x) + \cdots + a_ng_n(x))dx
[/math]
how would i go about finding a solution (or all solutions) for the coefficients?

>>16538401
You can derive all of them.
You pick two clauses, and if they have both the positive and the negative version of a number, that number get canceled. Like:

(6 -1 3) and (-6 -4) = (-1 3 -4)

and you try all the possibilities to verify if you can get to those options or not.

>>16538430
Interesting, thanks for the info, I think the easiest way in that case would just be to try and reverse engineer
Final state (1), find everything that has a 1 in it and try and cancel

>>16538423
> theres infinitely many solutions for g
By that logic there should also be an infinite amount of solutions for each [math]g_n[/math].

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>>16538520
the functions are known priori, the solutions refers to the coefficients.
at any rate, i think i figured it out. for my original problem, if g is a linear combination of one function then youre just solving
[math] \displaystyle
k=a_1\int_{- \infty}^{\infty}f(x)g_1(x)dx
[/math]
if you add another coefficient then you have a 1D family of solutions. if you add another f and another k then youre back to 1 (or zero, or infinite) solutions. you can express this with pic rel (i changed g to f and f to r), where [math]C_i\{f\} = \int_{- \infty}^{\infty} f(x)r_i(x)dx[/math], with the matrix being easily invertible.

>>16538528
>where [math]C_i\{f\} = \int_{- \infty}^{\infty} f(x)r_i(x)dx[/math]
oh, and chatgpt tells me thats called an "inner product", apparently

>>16538368
no but to
> Z/pZ x Z/(p-1)Z

Love math but I have a hardtime parsing word problems. Am I fucked?

>>16537706
thanks

>>16539993
>word problems
Aren't you too young to be thinking about getting fucked?

>>16539993
If you have an example you struggle with, post it

Eh, that's more of a "can you read" issue, which having worked with people, I know this is sorta understandable. If you can do math well, then you're at least halfway there. Half of reading is separating the wheat from the chaff and the other half is re-writing the valuable English words into understandable math language. Like, oftentimes, the words in a given problem has nothing of value, so you gotta learn to ignore it - but this more a reading strategy than a math one. Then with only relevant sentences remaining, you gotta be able to translate each one into a math sentence, which takes practice and understanding of math. Finally, you need to make connections between the variables you've created. The entire time, the steps you take need to be guided by your own understanding of what the hell you're even trying to solve for.

For a very difficult problem, it's best to parse through each sentence, ignoring the useless ones and translating the useful ones into math writing. At the end, you write out what you're solving for (and in what form!). Then you analyze the information you've just written down, trying to make a connection to them and the end goal. Tips to analyze and make the right connections are
>working backwards from the end goal and connecting it to the rest of your info
>recognizing units (unit analysis) to guide the form of your equation
>determining how many unknowns there are, which tells you have many equations you need
>perform "uniqueness testing" and ask yourself, is this individual aspect of the problem unique? (This helps for the tip above)

For a very simple problem, it's common to basically memorize what you've just read because the problem is so short, figure out what you're trying to solve for (and in what form!), then write out an equation, filling in the blanks with what you memorized. So no need to waste time and write down too much.

Also, do practice problems

>>16540462
Appreciate your post anon.

I think my problem is that i have a really good memory and as a result have relied too much on memorizing a process. I've done my best to develop the intuition necessary to solve those problems without memorizing but physics and stats problems screw me time and time again.

Ive got a couple of stupid biology question I hope you guys can help me with.

I’m trying to understand how disuse atrophy works in muscles for people who have a sedentary lifestyle, I understand that when youre just lying around then your body breaks down the muscles that it’s not using, I just don’t know why or how biologically. What is the process?


Secondly, when someone is starving and the body starts breaking down the muscles for energy, why and how does it do that? I thought cells only produced ATP from glucose and ketones.

>>16540670
You need to understand that all of your cells are constantly simultaneously disassembling and reassembling themselves. It doesn't seem like it would be efficient, but the systems that build that place the proteins never shut down, and nor do the ones the remove them and break them down.
Your body uses chemical signals to tell cells to build faster or slower. When you sit around, the disassembly outpaces the assembly. When you work out a lot, the assembly dominates.
When you starve, other systems grab up the free building blocks, so the cells don't all have enough to replace everything. Eventually your organs fail.

Is it true that embers from a fire teleport/phase through other material and the studyof them is what leads to the understanding of that concept? I've seen them teleport through stone, steel, and glass. They seem to not be able to pass through organic matter like plants and animals but instead just burn then, so my intuition led me to that theory.

>>16540952
>Is it true that embers from a fire teleport/phase through other material
Absolutely not. Embers are just glowing particulates. You are describing things that sound like they belong more on /x/ than here.