/sci/ - Science & Math

duz the fethur drop b4 the bowling bawl?

Are ohysical laws the same here on Earth as they are everywhere else in the universe?

How would I go about violating the laws of physics?

is the double slit test bullshit or does it mean anything at all

What field?

Please explain the annihilation of anti/matter. Which fundamental forces, if any, are responsible for this? I'm genuinely curious.

To throw a ball, do you exert an impulse on it? Do you exert an impulse to catch it at the same speed? About how much impulse do you exert, in comparison, if you catch it and immediately throw it back again?

Explain Quantum theory :3

how is babby formed

what are quantum fluctuations?

Can a planet / object / whatever ever run out of gravity?
If not is there any way to harness gravity and use it as a source of free energy?

How does gravity work?

Wow what total shit questions

>>2586774
>>2586704
Just talk about something interesting. People who want to try and learn will read it; people without patience would leave anyways; any knowledge you have is readily available over the internet in the form of textbooks.

>>2586801
>>any knowledge you have is readily available over the internet in the form of textbooks.

>>implying he didn't discover anything

>>2586774

What do you expect when you don't specify a field. We can all read wikipedia you know.

is it possible to create or weaponize sound waves so that they resonate or vibrate at the same frequency as solids creating destructive interference? forgive the badly worded/assumptions. i dont know physics.

>>2586809
Would be on the internet in all likelihood?

>>2586809
Because when you discover something you certainly don't publish your findings. Right?
Should have expected this kind of stupidity from someone who uses >implying.

>>2586823
That should be, "someone who uses >>implying"

>>2586823
>>implying I wasn't being sarcastic

>>2586716
The double slit experiment is a basic way to demonstrate the "particle-wave" duality of matter. Matter cannot accurately be described as either particles or waves alone. You must describe it as both.

Quantum Field theory does just that, it is the standard way we describe matter on a fundemental level. It allows for both "particle" and "wave" properties. The fundemental "character" of an object is not a "particle" or a "wave", it is a "field".

>>2586872
Does this description hold throughout physics? Where does it break down?

>>2586720
Your question really doesn't make sense.

It isn't just the result of a particular "fundemental force". It actually is just basic Quantum Field theory.

Annihlation occurs because I get a "0" state for all quantum numbers in the collision. Everything basically "cancels out".

Why in the FUCK is the neutrino, a particle with zero electric charge, supposed have a magnet moment? Supposedly this follows from the Dirac equation, but I don't see it.

>>2586973
why should zero net charge mean no magnetic moments? fucking magnets have zero charge

>>2586872
Quantum Field Theory (QFT) is actually a mathematical frame work. When "applied" is creates Quantum Electrodynamics, Quantum Chromodynamics, The standard model, etc.

I know there are some mathematical predictions as to when Quantum Field Theory may break down, but as to date we have never encountered a "limit".

>>2587000
Fucking magnets get their magnetic field from the movement and spin of the electrons within them.

>>2587008
You're forgetting your name Physics Guy!

Is there any way I could safely bring an object traveling at 500mph to an immediate rest without harming any occupants?

Assuming they were human.

How would you determine the physical relationship between the x-ray absorption spectra and the local bonding co-ordination of atoms?

What would happen if the sun was replaced with a black hole of the same mass ?

I'm still unclear as to how babby is formed.

>>2586819
Sure, that is basic Solid State Physics (undergrad shit).

All you need to do is calculate the "resonance frequencies" of the object in question. If you are able to vibrate the object to match a certain resonance frequency, it may tear itself apparent (eventually). This shit has happens all the time, and the physics is pretty fucking trivial.

>>2587054

>>2587054
Assuming this is some type of magical instant swap the earth would continue in its present orbit unchanged. Of course we would freeze to death.

>>2587080
If the sun supernova'd, we'd be frazzled.

>>2587030

then why mention the zero charge? that was my beef. zero charge is immaterial. the fact they have mass is the issue

If heat is the movement of particles, wouldnt sitting in front of a fan warm you up instead of cooling you off?

>>2587049
There are tons of ways, there is a whole field about this shit

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

So, it really depends on what spectroscopy method you want to use (have available)

If I had my choice, I would probably use XAFS
http://xafs.org/

>>2587092
Because fucking magnets are composed of particles with electric charge. Neutrinos (as far as I know) are not.

Why would mass produce a magnetic moment?

>>2587049
>>2587049
There are tons of ways, there is a whole field about this shit

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

So, it really depends on what spectroscopy method you want to use (have available)

If I had my choice, I would probably use XAFS
http://xafs.org/

>>2587045
ANSWER IT

>>2587097
The fan doesn't heat the particles up that much (it does transfer some energy, obviously, but a negligible amount). Rather, it just causes more particles to strike you faster, so there's more collisions of cool air particles with your warm body particles. So the energy gets carried away from your body faster.

how is light polarized by stessed materials

>>2587045
>immediate rest

This actually cannot happen. Nothing can slow down instantly. There is always a time (albiet very very very small) needed to get an object from motion to rest. Define your time scale, and I will answer your question.

is it possible to build a vehicle that is propelled by the wind, but can go faster than the wind AGAINST the wind?

before anyone asks, yes i read it in wired.

also, if objects within the universe have a tendency to form a spiral shape (due to gravity), why does the universe itself, as far as can be observed, have a tendency to form into a chain-like construct? this is not a brain teaser i just really want to know what kind of laws are at work in a macroscopic scale.

>>2587155

one millisecond.

>>2587045
>>2587121
Yes. Speed doesn't hurt you, acceleration does. It matters how quickly you try to get to 500 MPH. Also, if you're trying to do this on the surface of the Earth, there's air resistance, and even a little pebble kicked up at your windshield is now a little pebble going 500 MPH.

>>2587171
No.

>>2586736
The universe is constantly making shit out of nothing, as well as destroying shit into nothing (on an quantum scale). We call this stuff vaccum fluxuations.

>>2587120

You are just proving what I said earlier (>>2586810). You didn't answer the question (>>2587049). Einstein liked the field of electromagnetic interaction with matter and he would be disappointed by your attempts to talk down at high schoolers.

>>2587171
I anit doing the math for you, but I'll get you started.

initial speed = v

your slow down time = t

g = gravity 9.8m/s^2

n = number of g's you will experience

n = v/(g*t)

Then look up what the human body can handle (and compare). Note, it depends on the time you experience the g's, as well as what direction they are in.

http://en.wikipedia.org/wiki/G-force

>>2587193
http://www.chem.ucalgary.ca/research/groups/faridehj/xas.pdf
Scroll down to the last page. You're interested in EXAFS.

Physics Guy acts like it's an opinion based decision, fuck no it's a science based decision.

>>2587113
two reasons

extended standard electroweak theory

transition of the mass eigenstates

>>2587226
>>2587226
When it comes to that shit, it really depends on your material, and what you have available (what syncrotron you are using, or what lab equipment you have).

Given any material there are usually many techniques that will work.

Examples of some techniques.

XAFS: http://en.wikipedia.org/wiki/X-ray_absorption_fine_structure

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

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

etc

After a star uses up its hydrogen>helium fuel and supernovas, where does the hydrogen for new star formation come from?

>>2587280
Those techniques aren't interchangeable. You get different information from different techniques (oxidation state, coordination number, etc).

Does mathematical notation dissolve the integrity of real world observations?

is all the energy in the universe quantized?

How many hydrogen atoms would you need to get a total energy "output" of 500 KJ (By the means of nuclear fusion)

Also, How many Uranium-235 atoms would you need to reach a critical mass, (Density of 19 kg/dm3 under normal pressure)

This is questions from physics 1, second grade, High school.

Anyway, gtg

Thanks for the questions /sci/

>>2587226

That is much closer, a warm welcome to the discussion. What physical model would you use for trying to quantify the local bonding arrangements in XANES? Her research used simple MD simultations in order to fit the XAS. I know about these programs but how would you distinguish the local bonding property arrangement contributions in XANES spectra specifically?