/sci/ - Science & Math

[Physics Guy No.2336613]

Yall know the deal.

Yall post physics questions and I answer them (if they are not too fuckin retarded)

Benifit to you: You may learn alittle something

Benifit to me: I get to review shit I should know

anytakers?

[Anonymous No.2336619]

Why do I get a physical reaction from pictures like these?

[Anonymous No.2336632]

A rocket accelerates with 5g till 3000m/s and stops accelerating there
Another rocket accelerates with 0,0005g
when will the second rocket overtake the first?

[Anonymous No.2336642]

>>2336613
explain trollface's paradoxes

[Anonymous No.2336644]

[Anonymous No.2336648]

[Anonymous No.2336653]

Can the "curvature" of space (ignore time) around masive objects be described as "contraction"?

As in, the fabric of space is actully pulled into the object (if you know what i mean)?

(i realy hate the 2d "gravity well" diagrams as they demonstrate gravity by invoking gravity, which is retarded).

[Troll physics guy (Trollface) No.2336656]

[Anonymous No.2336659]

range of ln(5x - 2) for real values of x such that x is greater than or equal to 1/2

[Troll physics guy (Trollface) No.2336662]

[Troll physics guy (Trollface) No.2336664]

[Anonymous No.2336675]

Is infared radiation actually heat, or how heat can be visible, or something else?

[Anonymous No.2336677]

how was the diameter of the proton measured?
why it cant be said that electrons or any other point particle are black holes?

[Anonymous No.2336678]

Is there a way to correct the mass to moles equation to account for velocity of the substance? Sorry if it seems like a weird question but I'm just curious

[Anonymous No.2336679]

Which one of the 2 is a better description of Hawkins radiation:
1. Quantum tunneling/uncertain position causes "shit" to appear outside of a black hole.
2. Positive/negative energy particle pairs appear near the event horizon of a black hole. Anti-mass one gets absorbed, the other one "flies" away as a gamma ray.
Is any of those good? If not, describe it properly.

[Anonymous No.2336681]

>>2336664
Need this explaining, out of all the troll physics, this seems most likely to work IMO, which of course makes it interesting to see blown down.

Then again, I never knew much about physics...hence I'm asking

[Anonymous No.2336697]

>>2336681
You have to displace the water when you place the ball at the bottom. This is equal to the energy you would gain from boyancy.
No one going to answer any of the real questions? I would kinda like to see the answers from a physicist.

[Anonymous No.2336703]

>>2336653
>Can the "curvature" of space (ignore time) around masive objects be described as "contraction"?

You could describe it as such (very informally).

Just apply the 2-d example idea to 3-D. Imagine a "3-d euclidean grid" (all straight parallel/perinduclar lines of equal space between them. Just as in the 2-d example, a massive object (actually it could have 0 mass and just have mometum) will "bend, stretch and shrink" the lines around it. It will create a "3D" well (might be hard to visuallize).

[Troll physics guy (Trollface) No.2336707]

[Troll physics guy (Trollface) No.2336712]

[Anonymous No.2336715]

Does the curvature of space-time with huge gravity-abundant objects necessitate a 4th additional physical dimension?

[Anonymous No.2336720]

>>2336715
No.
Curvature of space-time does not require additional spatial dimensions.

[Anonymous No.2336725]

>>2336720
What about the fact that the universe is expanding uniformly? Wouldn't a 4-dimensional balloon being blown up perfectly explain this?

[Physics Guy No.2336726]

>>2336720
Agreed

[Anonymous No.2336727]

How have we observed quarks and what do they do? (spin is kind of vague)

[Anonymous No.2336731]

>>2336675
Infrared radiation is just long-wavelength light. Most solids radiate in a spectrum close to a black-body. The intensity and the peak frequency both go up with temperature. This is why hot iron glows red, hotter iron orange and brighter, and much hotter is white (good mix of many visible wavelengths) and very bright.

You do the same. You're glowing in the infrared. This isn't "heat" - it is light being given off, cooling you down. Through this mechanism, heat energy can become light, and then become heat again. Heat is just vibration of molecules, especially in solids.

[Anonymous No.2336737]

Air, with a supply pressure of 500kPa and initial temperature of 21.5c flows isentropically through a convergent divergent nozzle at the design pressure for the said nozzle (this supersonic flow is achieved). The design pressure occurs when the back pressure is at 150kPa and the nozzle and pipe have a cross sectional area of 1.8*10^-5m^2 and 4.56*10^-5m^2 respectively. An orifice plate is used with an inclined manometer to achieve a reading of 0.05m

What is the mass flow rate?

[Anonymous No.2336738]

>>2336725
Spacetime is already four dimensions: three space and one time.

But no, the three dimensions of space can expand over time without the existence of higher dimensions. All space is expanding (uniformly, it seems). Also, the big bang happened everywhere - it was a not an explosion of matter in space, but a rapid expansion of all space that continues today. Thus, we have no reason to believe the universe has an edge.

I'm touching on a lot of related ideas - tell me what doesn't make sense.

[Anonymous No.2336742]

What signals do a particle accelerator experiments actually detect? I realize that certain signals correspond to certain particles, but what does something like ALICE at the LHC actually detect?

[Anonymous No.2336743]

>>2336720
I always thought that If you took a snapshot of our planet next to the sun it would be a 3D world. Though over time you see that gravity has an effect in 4D as in it bends through time. React to this I may have a big whole in my logic

[Anonymous No.2336744]

>>2336727
quarks are what make up most of the matter we're familiar with: neutrons and protons. Electrons aren't made of quarks though.

Without quarks, our observations in high-energy particle collisions don't make any sense.

[Anonymous No.2336746]

What's your main reason for studying physics. Did something happen or did your realize something that made you wanna study it?

[Anonymous No.2336748]

>>2336731
So heat is its own thing, yet somehow produces light vibrations at the same time? And then, like the sun's light through space, can heat up particles from its EM radiation?
If I touch something warm am I feeling the vibration of the molecules more than the effect of infared radiation?

[Anonymous No.2336752]

>>2336743
I'm not sure what you mean by 3D and 4D.

The sun and the earth move through 3D space, with the Earth orbiting the Sun, as the Sun likewise moves through space. The reason the Earth is pulled towards the Sun is the curvature in space caused by the mass of the Earth and the Sun. Moving objects are, in a sense, following a "straight" path in a curved space, rather than a curved path in flat space.

[Anonymous No.2336756]

What causes St. Elmo's fire?
(the glow [plasma?] that forms on the edges/tips of sharp metallic objects before a lightning strike)

[Anonymous No.2336764]

Two equally charged particles are held 3.2 X 10-3 m
apart and then released from rest. The initial acceleration of the first particle is observed to be 7.0 m/s2 and that of the second to be 9.0 m/s2 If the mass of the first particle is 6.3 X 10-7 kg, what
are is the mass of the second particle and the the magnitude of the charge of each particle?

[Anonymous No.2336766]

>>2336748
Heat is movement of atoms and molecules. When you touch something hot, the fast-moving molecules in the surface slam into the molecules in your skin, transferring energy (heat).

And there are ways for moving atoms to release their energy as photons - generally acting through their electrons. This is easier in solids, because there are lower energy levels that the electrons can bounce up to and back down from. As they drop back down, this can produce a vibration in the solid (more heat), or release a photon (light).

Again "heat" is just internal motion of atoms and molecules. Light is electromagnetic radiation - radio, microwave, infrared, visible, ultraviolet, x-ray, gamma ray... they're all the same thing, but with different wavelength (different energy per photon).

[Anonymous No.2336767]

>>2336748

Dude... heat is just a human perception of highly energised matter.

[Anonymous No.2336771]

>>2336752
well I always considered the progression of dimensions as a line being the first crossection that making a plane then 3'd giving diameter, and fourth giving time. So I meant looking at objects in space for an instant would be looking at a 3d Grid. Watching its effects over time would be a 4d one. So my conclusion was that gravity effected objects by bending it through time(4D).

[Physics Guy No.2336772]

>>2336677

The Rutherford scattering experiment:

Assume the proton is a little charged ball. Shoot electrons at it. Observed all the deflections. With enough info you should be able to calcualte the radius of your proton.

http://en.wikipedia.org/wiki/Rutherford_scattering

Although, there are others ways. Rutherford and it's results are usually taken as the standard. Also, you just arent shooting elctrons at protons, (usuasually shooting helium at gold or somthing) so you gotta account for some structure and shit.

[Anonymous No.2336776]

>>2336756
High electric fields messing giving energy to electrons in air molecules, which later give it up as photons.
http://en.wikipedia.org/wiki/St._Elmo's_fire#Scientific_explanation

[Anonymous No.2336786]

>>2336771
That isn't the normal terminology, but that seems correct. Because the underlying 3D space is curved, the path followed in 4D (over time) is curved. Any small masses in that region would follow the same curvature.

[Anonymous No.2336787]

Two easy questions from a high school physicsfag:
1. How does a photon have momentum? Does it have no mass, or just an infinitesimal (but non-zero) mass?
2. Does momentum work in action-reaction pairs just as forces do?

[Anonymous No.2336820]

Since the speed of light varies depending on the medium. Can things actually travel FASTER than the speed of light in certain mediums or would the speed of light in a particular medium be the maximum speed that things may travel through that medium?

[Anonymous No.2336830]

>>2336787
1. You were lied to: p = mv is wrong. It's the Newtonian physics approximation of the real equation. Perfectly valid most of the time. Don't try it for objects whose energy far exceeds their rest mass (like photons, or objects with mass at relativistic velocities). The real equation is E = sqrt(p^2*c^2 + m^2*c^4). If m=0, then E = p*c, p = E/c. This is the photon momentum.

2. Momentum is conserved, because the laws of physics are the same everywhere (applying Noether's theorem). In a closed system, total momentum is constant. This does apply to isolated two-body interactions.
tl;dr Yes.

[Anonymous No.2336831]

What are his glasses?

[Anonymous No.2336840]

>>2336820
The speed of light in any medium is less than the speed of light in vacuum. Anything that appears to violate this isn't doing what you think it is. You'll get a nobel prize if you find an exception.

[Physics Guy No.2336868]

>>2336675
Good Question

This is a good explation of heat
>>2336766

>Why infared

Basically, most things are constantly absorbing/emmting photons. This is just a natural consequency of everything having electrons (as well as other fundmental particles). The human body will naturally emit/absorb photons in a certin range energy range, this is the infrared range.

>Why we precieve it as heat

The more energteic a photon is, the more kinetic energy it has, the more it contributes to a higher tempeture (basic defintions of temperature). So, higher temperture produces higher energy photons.

So, if person "X" is at higher temperture then person "Y", we should see higer energy infared from person "X". Which means that the infared frequency of the photons coming off of person "X" will be higher then that of person "Y".
Hence infared can be directly correlated to thermal tempreture.

[Anonymous No.2336893]

>>2336840
Sorry I guess I worded that poorly, what I meant was, is the speed of light in a particular medium the maximum speed anything may travel in that medium (barring crazy subatomic particles).

Like say the speed of light in water is .5c, is the maximum speed an object may travel through water .5c? Or may things travel faster than light through water?

[Anonymous No.2336917]

>>2336893
Actually, no. I general, light moves more slowly through materials because it is occasionally absorbed, held for a bit, and re-emitted as a photon. This average light propagation speed CAN be surpassed by physical objects - by not the speed of light in vacuum.

Want to know what happens when you do it?
http://en.wikipedia.org/wiki/Cherenkov_radiation

I've seen it. It's pretty.

[Anonymous No.2336926]

Ok so,


'A particle of mass 7m is placed on a rough horizontal....' blah blah blah

What does m stand for in terms of mass?

[Anonymous No.2336942]

What is 1 degree celcius?

[Anonymous No.2336944]

>>2336926
I'm guessing that the units are arbitrary.

[Anonymous No.2336955]

>>2336942
The shift in temperature achieved by adding 1 joule of energy to the heat of 1 gram of water (originally). I'm not sure what the unit is tied down to and defined as in actual international standards right now. But that's where it comes from.

[Physics Guy No.2336958]

>>2336893
>Like say the speed of light in water is .5c, is the maximum speed an object may travel through water .5c?

No, you could travel up to c, in the water. However, once are at .5c, you will have some really fucked up phenomina happen.

pic realted

[Anonymous No.2336962]

>>2336944
Could be, I think I will just assume that it is the same as Kg for now, thanks for halp

[Anonymous No.2336967]

>>2336955
Sorry, 1 calorie of energy. Not joule. I thought that sounded wrong to me.

Fun fact: The "calories" in food labels are actually kilocalories of energy.

[Anonymous No.2336971]

>>2336926
Unless defined above i.e. m=...
It means the answer isn't a number, it's some algebra...

[Anonymous No.2336973]

do tell about magnets. they intrigue me so verily

[Anonymous No.2336978]

X=y
X^2=yx
X^2-y^2=xy-y^2
(x-y)(x+y)=y(x-y)
(x+y)=y
(x+x)=x
2x=x
2=1

Explain this equation

[Anonymous No.2336983]

>>2336971
That's a possibility. But why the 7?

[Anonymous No.2336985]

>>2336978

wait..

buy if x=y...


THEN WHO WAS PHONE?!

[Anonymous No.2336991]

>>2336978
You set x=y, but also divided by x-y, or 0. Division by zero is undefined, and does not preserve equality.

[Anonymous No.2336996]

>>2336978
4th step
>Divided by 0

[Anonymous No.2337001]

Why is snow white but ice is transparent?

[Anonymous No.2337006]

>>2336893
The maximum speed anything can travel through anything is the speed of light. If you have a rocket with some mystical engine that generates enough thrust to constantly propel it at the speed of light, and a pool of water is in its path, the rocket will collide with and pass through the water, the walls of the pool, and everything else at the speed of light.

[Anonymous No.2337013]

>>2337001

snow isn't white. its also transparent, but what you're seeing is the total reflection of light from its combined surface.

Ice is transparent, because the light pases through the ice and does not reflect from it.

[Anonymous No.2337018]

>>2336642
The first twin experienced acceleration while getting up to the speed of light, so he is the one who ages more slowly with respect to earth

[Anonymous No.2337021]

>>2336973
Atoms with unbalanced electron spin (for instance, having an odd number of electrons) can have a significant net magnetic moment. This magnetic moment is an intrinsic property of electrons.

If you line up most of the magnetic moments in a bunch of atoms, you get a magnetic domain with a bulk magnetic field, as opposed to randomly oriented atoms with no net field. Line up most of the magnetic domains in a large amount of the material, and you have a magnet. In ferromagnets, they like staying lined up, but you can destroy the ordering by heating it up.
http://en.wikipedia.org/wiki/Ferromagnetism#Origin_of_magnetism

Energy from the interaction of magnetic domains is minimized when they line up. That is why magnets exert a force on other magnet - they want to line up their domains, to minimize energy.

[Anonymous No.2337030]

>>2337001

Many ice no transparent. Snow many ice. Single snowflake one ice, transparent.

[Anonymous No.2337033]

>>2337018
Not to mention the acceleration for the turnaround to come back home. THAT is fundamental - even if you ignore the velocities to start and end the whole journey.

[Anonymous No.2337035]

does eletron positron production by gamma rays need a nearby particle or just an eletric/magnetic field?

[Anonymous No.2337039]

>>2337030
I love you, physics caveman.

[Anonymous No.2337043]

>>2337035
A single gamma ray cannot turn into a particle-antiparticle pair, because it does not conserve momentum in all intertial reference frames. You generally need a third party (another particle) to satisfy the momentum conservation. Also, when a particle-antiparticle pair annihilate, you get two gamma rays, not one.

[Anonymous No.2337046]

>>2337039

If ever there was a new meme to sprout up.. it would be him.

Bringing spinning rock circles to cavemen everywhere.

[Anonymous No.2337052]

>>2337046
Spinning rock circles?

[Physics Guy No.2337057]

>>2336742
>What signals do a particle accelerator experiments actually detect? I realize that certain signals correspond to certain particles, but what does something like ALICE at the LHC actually detect?

I don't understand your question. The LHC, like most human tech, it is based off electricity. One way or another information about a particle must be converted into an electronic signal.

Hence the fundmental thing that we "dected" will be a charge, current, or voltage change. Enough of these, properly arranged in time and space (that depends on the detector), will correspond to the positive identification of a particle. Once we have particle identifications, we can all the particle interactions.

[Anonymous No.2337061]

>>2337052

I think he meant the wheel..

captcha glowy are

[Anonymous No.2337069]

>>2337039

What love?

[Anonymous No.2337071]

>>2337057
To add to the answer though, there are layers of detectors that are designed to each capture certain classes of particles, and let the others pass through. This is one major way of knowing what kind of particle your electronic signal is identifying.

[Anonymous No.2337073]

>>2336613
On which foundation is the research of Quantum Magnetism based on? I think you know that B-fields are relativistic distortions of electrostatic fields and therefor you should encounter a descriptive problem at some point.

[Anonymous No.2337076]

>>2337069
Love is warm happy when see face or hear speak.

[Anonymous No.2337085]

wtf are the "hidden variables" that had proven imossible by bell/aspect?

And souldnt aspect/bell have received a triple nobel prize for braking EPR?

[Anonymous No.2337087]

I have a problem. If Alpha particles are so small and can pass through enything, why did Niels Bohr even put up shielding behind his particle accelerator? If he knew that they would pass right through it, what made him even try to see fi they could get reflected back by hitting the neutrons in a sample?

captcha: sawyor results - and they are bad!

[Anonymous No.2337094]

>>2337076

Love food? Food warm happy.

[Anonymous No.2337099]

Do you believe in string theory

[Anonymous No.2337102]

>>2337099

I believe in spaghetti, if that helps.

mmmm pasta...

[Anonymous No.2337113]

>>2337085
The "hidden variables" are something that could tell you how a given generally-unpredictable quantum experiement would turn out. It's the "the information is there, we just don't know how to tell" argument. Turns out that is provably false, through the experimental violation of a Bell Inequality. This proves one of two things: There are no such local hidden variables (the universe is not deterministic) or locality is violated (everything affects everything all the time, regardless of time, space, or relativity).

You can look up Bell's Theorem, of course.

[Anonymous No.2337122]

>>2337094
Yes, but warm happy from friend not big or long like warm happy from friend. And friend still there!

[Anonymous No.2337126]

>>2337122
Yes, but warm happy from food not big or long like warm happy from friend. And friend still there!

[Physics Guy No.2337127]

>>2337073
It should be Quantum electrodynamics, the application of Quantum Field theory to electroweak shit.

I don't understand why you think we should encounter a problem? Explain you reasoning please.

[Physics Guy No.2337161]

>>2337087

>Alpha particles are so small and can pass through enything

That's obvsiously not true. If it was then he would have seen no deflection.....lol.

[Physics Guy No.2337172]

>>2337099
Nope

[Anonymous No.2337179]

>>2337161

They can, or at least, during his time, they COULD. no one proved they couldn't, until his experiment "accidentally" found holes in his shield in the back. that proved that they could not only be deflected sideways, but completely reversed.

[Anonymous No.2337206]

>>2337113
There's still dispute that local hidden variables have been comprehensively disproven. See Joy Christian for several papers on Clifford algebra LHV models that violate Bell's inequalities and reproduce quantum effects.

[Anonymous No.2337224]

if everything came from big bang, shouldnt every particle be entangled with each other?

[Anonymous No.2337225]

What causes matter and antimatter to annihilate? Can it be explained by the four fundamental forces?

[Anonymous No.2337230]

>>2337224
Every particle may well be entangled with every other particle. That doesn't stop us describing and predicting the mechanics of local systems.

[Anonymous No.2337247]

>>2337206
There's also debate about global warming and the big bang. I'll go with the mainstream view, having not performed the experiment myself.

[Anonymous No.2337249]

>>2337225
Pretty sure that quantum field theory and the Dirac equation have it covered, though I don't know personally. The Dirac equation predicted antimatter before it was found, as well as its properties.

[Anonymous No.2337250]

>>2337230
but does that give any holistic law?

[Anonymous No.2337254]

>>2337250
There's the Bohm interpretation of QM. Which I don't buy, since it violates locality instead of determinism, but hey.

[Anonymous No.2337261]

>>2337225
Put simply, matter and anti-matter have opposite properties. When they collide they cancel out their properties leaving only the mass. Mass equates to energy and fucks off somewhere else as an explosion.

[Anonymous No.2337268]

What macroscopic states can generally be said to make up microstates in their entirety? (Being of a uniform microstate and thus itself being reduced to a microstate).

[Anonymous No.2337271]

If you constructed a person physically identical to me, but all particles were replaced with their antimatter equivalents, would there be any observable difference between this person and myself?

[Anonymous No.2337274]

>>2337271
Not to the eye. But he couldn't be anywhere near Earth.

[Anonymous No.2337280]

>>2337268
.... any macrostate with multiplicity one?

[Anonymous No.2337291]

Imagine a box full of light.

Contained within this box is a clock, attached to a shutter. Record the mass of the box full of light. At a predetermined time, the clock opens the shutter, for just long enough that one single photon can escape.

Now weigh the box again. Since E=mc2, we know the energy of the photon that left the box from th...e mass loss. We also know the time it left.

With the perfect equipment in our imaginary lab, both these measurements can be perfect and exact.

But Heisenberg's Uncertainty Principle - a central tenant of quantum mechanics - prohibits exact knowledge of two properties of a particle at once - energy and time are paired, and if you know one, you cannot know the other to a better degree of accuracy than that of Planck's constant, h.

So why doesn't the boxful of light violate Heisenberg's Uncertainty Principle, and thus invalidate quantum mechanics?

[Anonymous No.2337294]

could you explain that "electromagnetic force is created by virtual particle exchange" shit? whats a virtual particle?

[Anonymous No.2337297]

>>2337291
.... Because you can't define the box's energy with infinite precision without looking at the box for all of eternity. And this is more than just not knowing the value. A state that only exists for a short time also has associated uncertainty in energy.

[Anonymous No.2337301]

>>2337294
Energy briefly borrowed from the vacuum.
http://en.wikipedia.org/wiki/Virtual_particle

[Anonymous No.2337315]

>>2337297
nope.
don't worry, it took Niels Bohr a good 12 hours to solve.
protip: don't think about the box too much.

[Anonymous No.2337322]

if a particles momentum is in the same direction of its movement, how can any form of attraction force exist(since they are particle exchanges)?

[Physics Guy No.2337326]

>>2337250
The "Hollistic law" would be the Quantum Field theory.

[Anonymous No.2337325]

>>2337315
No u. delta_E*delta_t <= h_bar/2.
States that don't persist for eternity don't have infinitely precise energy.
http://en.wikipedia.org/wiki/Uncertainty_principle#Energy-time_uncertainty_principle
> As Lev Landau once joked "To violate the time-energy uncertainty relation all I have to do is measure the energy very precisely and then look at my watch!"
>Nevertheless, Einstein and Bohr understood the heuristic meaning of the principle. A state that only exists for a short time cannot have a definite energy. To have a definite energy, the frequency of the state must accurately be defined, and this requires the state to hang around for many cycles, the reciprocal of the required accuracy.

[Anonymous No.2337329]

>>2337315
No u. delta_E*delta_t >= h_bar.
States that don't persist for eternity don't have infinitely precise energy.
http://en.wikipedia.org/wiki/Uncertainty_principle#Energy-time_uncertainty_principle
> As Lev Landau once joked "To violate the time-energy uncertainty relation all I have to do is measure the energy very precisely and then look at my watch!"
>Nevertheless, Einstein and Bohr understood the heuristic meaning of the principle. A state that only exists for a short time cannot have a definite energy. To have a definite energy, the frequency of the state must accurately be defined, and this requires the state to hang around for many cycles, the reciprocal of the required accuracy.

[Anonymous No.2337331]

>>2337322
Virtual particles can have negative momentum, it seems. I admit I don't understand that one very well yet either.

[Anonymous No.2337332]

what kind of pairs are generetad in vaccum fluctuations?

[Anonymous No.2337340]

>>2337332
Any particle and its antiparticle. But the more energy this entails, the faster they go back to vacuum. Also, photons are their own antiparticles.

[Anonymous No.2337345]

>>2337329
(cont)
http://en.wikipedia.org/wiki/Uncertainty_principle#Einstein.27s_box

[Anonymous No.2337347]

What's the latest in physics?

What has the most buzz around it? What's hottest?

And what's most interesting in your opinion.

[Anonymous No.2337351]

>>2337347
Get a subscription to Science, or at least Scientific American. You'll be much more satisfied with that.

If it's only physics you care about, there is Physics Today from the American Physical Society (APS).

[Anonymous No.2337353]

>>2337340
If there is enough energy to make a high energy pair e.g. tau and antitau why would the energy not make loads of electrons and positrons instead?

[Anonymous No.2337354]

>>2337351
Oops, actually Physics Today is from the American Institute of Physics, but I get a subscription as part of my APS membership.

[Anonymous No.2337358]

>>2337353
The energy has to been given back to vacuum, in a timeframe given by >>2337329

[Anonymous No.2337360]

how is the mass of a particle distributed among its ghostly quantum nature? its like in a point?

[Physics Guy No.2337365]

>>2337271
>would there be any observable difference between this person and myself?

No, except he/she would not be stable in the region of space.

However if you also reverse the persons spatial symmetery. Ie, he is a mirror imagine of you, not a exact copy, then the answer is unsure.

You may have some werid Charge-Parity shit happen on a fundemental level. Not sure if this phenomena would have any affect on the macroschop level, or a noticble human level.
http://en.wikipedia.org/wiki/CP_violation

Matter and Anti-matter should be symmetric in everysense, but experiments actually say they are not.

[Anonymous No.2337367]

>>2337353
However, if you're not talking about VIRTUAL pair creation, as in, there is some real-world energy floating around for this, like in particle accelerator collisions, then the answer is that high-energy pairs are much less likely, and in fact happen fairly rarely. At the LHC they sift through huge numbers of pretty normal events to find the few rare and interesting ones.

[Anonymous No.2337441]

Does mass bend space or bent space IS mass?

[Physics Guy No.2337450]

>>2337347
>What's the latest in physics?

We recently observed an very unexpected phenomina at the CMS experiment. Shit has alot of people dumbfounded, trying to figure out what it means/implies.

I'm sure there is other shit that is pretty cool in other areas of physics too, but I haven't heard about it yet. I just got my copy of "physics today" , today. Havent had time to read it yet.

>What has the most buzz around it? What's hottest?

Buzz = LHC
Hottest = NanoTech

>And what's most interesting in your opinion.

LHC shit naturally

[Anonymous No.2337452]

The first one. Energy density also bends spacetime, even if it is massless.

[Physics Guy No.2337496]

>>2337441
>Does mass bend space

Yes

>or bent space IS mass?

No. The closest analogy would be "Mass is very very very consentrated energy"

[Anonymous No.2337546]

>>2337496
and how does it keep concentrated? what keeps it in place?

[Anonymous No.2337560]

>>2337546
>>2337546

gravity -.-

[Anonymous No.2337564]

how do magnets work?

pic related it's me

[Anonymous No.2337571]

if edward is older then bella if he says ahhhhooo does he have an echo???
did he come 2 dance?
did he have plan?
did it go on and on?
did he throw his hands up?
does he celebrate?
does rox club?
has dynomite?

[Anonymous No.2337586]

>>2337571
wat

[Anonymous No.2337599]

>>2337586
does edwards has cop teh sex????
oooo ooo ooo
yeh yeh yeh
does he get up all in ya
does he here angels in da air
does he do bucks in his lastest drop/???

[Anonymous No.2337631]

[Physics Guy No.2337649]

>>2337546
Good question, however it is currently not known, nor have any good hypothesis been made.

If I knew that shit, I would have a nobel prize.

[Physics Guy No.2337661]

>>2337560
Nope

[Anonymous No.2337756]

>>2337649
do you have any hypotesis? even if theyre bad?

[Anonymous No.2337839]

is there any difference between the vacuum fluctuations on strong gravitational fields and almost no gravitational field?

[Physics Guy No.2337870]

Honestly guys, the answer is creationism. God answers all of these questions.

[Anonymous No.2337871]

Since absolute zero is at −273.15°C (−459.67°F) and makes atoms stand still, is there a degree that makes atoms move with the speed of light? If so, how hot would that be?

[Anonymous No.2337876]

What is the difference between a revolution and rotation? We are having a discussion on another /sci/ thread.

[Anonymous No.2337884]

>>2337871
Infinitly hot, since you need an infinite amount of energy to accelerate mass to the speed of light

[Anonymous No.2337885]

If I have a stick that is 1 light year long, and I poke someone 1 light year away with it, does the kinetic energy from my "poke" travel faster than the speed of light if the poke is felt immediately? Would it be felt immediately?

[Josef !!nUf2NflSAyw No.2337916]

Still waiting for that eMail. :>

[Anonymous No.2337960]

Why did you pick Einstein when this guy is so much cooler

[Anonymous No.2337967]

what are dual spaces for?

don't explain to me what they are formally, cause I know that. I wanna know what you physics people use our awesome abstract mathematical theories when nobody's watching

[Anonymous No.2338012]

>>2337885

[Anonymous No.2338033]

>>2337885

The movement in the stick is a vibration wave, propagating through atomic bounds. This wave speed cannot exceed the speed of life, so no, the poke would not be felt immediatly.

You can imagine a stick made of springs attached to each other, if you try to poke somebody with it, the movement of your arm will propagate within the stick.

[Anonymous No.2338054]

>>2338012

Damn there are some good science trolls here !

The compression due to the wave is local. Other parts of the stick nearby the compressed one are extended, so the size at the end does not change.

[Physics Guy No.2338086]

>>2337960
There are more pics of Einstein on the web.

[Physics Guy No.2338117]

>>2337916
Ehh, sorry, been busy. I'll send you a line, sooner or later.

[Physics Guy No.2338143]

>>2337967
Yes, we use "dual spaces" alot.
Field Theory comes to mind.
They are part of the mathematical framework....but you alreay knew that.