
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
26,215 
Hi,
I am having trouble with this concept...
"A mean speed (c) is calculated by multiplying each speed by the...

Sep714 12:33 PM
Coop

5 
409 
Hi
For a simulation regarding Lennard Jones fluids I'm getting divergences.
I have particles in a fixed volume.
I...

Dec2513 06:53 PM
jedishrfu

2 
881 
I have a pyrochlore antiferromagnetic system. In AC magnetic susceptibility measurements, there is a cusp at 4 K whose...

Mar1412 08:06 AM
fuzhendong

0 
1,384 
I superlattice are learning about. I need some specific examples or book of superlattice GaAs / AlGaAs and GaN / AlGaN...

Mar1813 07:19 AM
kien02091990

0 
549 
hi all...
I have written codes for 2d fdtd tfsf with berenger's pml absorbing boundary. But I have serious leakage...

Mar1814 04:13 AM
DrDu

8 
983 
I did an experiment to calculate the cross section for capture, loss, and ionization for a 05+ projectile on an 02...

Apr208 10:53 AM
MSUGRAD05

0 
966 
Hi all!
I am a chemist trying to make her way through solid state computational physics problems and I have been...

Jun408 08:05 AM
PHY101

4 
2,119 
What is the meaning of zero resistivity in superconductors? I mean, what's the cause of zero resistivity in...

Aug610 01:59 AM
DrDu

4 
3,411 
Hi everyone,
 Could you explain for me the meaning of "net" in the phrase "small net attraction between electrons"...

Aug1612 02:12 PM
DrDu

1 
868 
Hi,
As an interested nonphysicist, may I ask a possibly naive question concerning superconductivity? It seems...

Mar308 08:01 AM
ZapperZ

4 
1,624 
I made some frequency calculations in Gaussian (using various method/basis set combos) and I have to find which...

Jul1712 08:50 AM
mycotheology

14 
2,547 
They say ZPE is the energy of the system at 0 K due to vibrations and even though the Schroedinger equation gives us...

Dec1112 09:04 AM
askhetan

4 
1,264 
What is the difference between a field cooled (FC) and a Zero field cooled (ZFC) at a applied constant magnetic field...

Mar109 02:27 AM
jimrom

0 
13,084 
hi everyone;
does fermi energy equal zero ?
If it is, what is the physical meaning of this situation?...

Dec912 01:37 PM
selmayda

0 
691 
Hello
Is anybody can help me for the next question (the topic is defects in crystal) :
It should be...

Nov1310 11:11 AM
djodjo444

6 
1,619 
Hi
Why photon has zero chemical potential. please answer this question clearly.

Jan1411 01:38 AM
guyingfei

8 
3,185 
in zener tunneling phenomena, are the carriers locally generated or nonlocally generated?
i.e, should we assume the...

Oct2407 02:12 AM
Gokul43201

1 
5,637 
could any1 plz explain avalance effect
i can understand that the electrons minority carriers are accelerated by high...

Nov2509 08:26 PM
sudar_dhoni

8 
3,721 
Hello all,
I am learning some basic course in solid state phyiscs. I have a question about Zeeman
splitting in...

Mar208 10:44 PM
amitrt

2 
2,113 
Please refer to picture (1). This the equation of motion for an electron in a magnetic field along the z direction and...

Apr813 01:37 PM
daveyrocket

3 
744 
How to separate the spectrum of cadmium in the experiment zeeman effect to two lines if we look at it in parallel to...

Jan2409 03:26 PM
AFM

0 
1,448 
There are two types of zeeman effect, one normal and the other one anormal, but why are they called so?
I mean what...

Dec1212 09:09 AM
Myphyclassnot

5 
1,117 
Diagram of the energy levels for the weak field Zeeman effect on 1F  1D transitions
In the emission spectrum how...

Dec113 01:50 PM
ale17

0 
637 
If you zap a ntype semicond. with a laser with energy at, say, the band gap, what happens to the donor electrons? For...

May1708 11:06 PM
Buckeye

3 
1,577 
what is modulo associated with z2 invariant?

Oct2310 06:39 AM
hiyok

4 
2,278 
can YBCO be prepared in lab.?:biggrin: :approve:

Oct1906 06:08 PM
NoTime

5 
2,039 
dear physicists
I am interested in Yttrium iron garnet (http://en.wikipedia.org/wiki/Yttrium_iron_garnet)
...

Apr1113 02:26 AM
lepori

0 
705 
Hi everyone, :smile:
Apologies if this is in the wrong section, I'm still relatively new to the forum. :blushing:
...

Nov1909 05:55 AM
phyzzy_physh

3 
5,634 
Hello,
I was wondering if anyone could tell me the young's modulus of:
Graphite,
Wood,
Steel,
Glass,...

Feb304 11:50 PM
nautica

4 
5,987 
Hi,
does higher young modulus means higher rigidity of a solide?
Regards,

Oct2610 07:09 PM
Mapes

1 
1,906 
When a photon hits an atom it gets absorbed and an electron moves one or more shells up depending on the energy of the...

Jun1505 01:41 PM
marlon

8 
1,149 
In doing some research using a basic superconducting kit with a susceptibility probe, we set out to find the critical...

May1807 10:32 AM
ZapperZ

3 
3,700 
I'm interested in the superconductors they use to levitate trains. One of the most talked about...

Apr111 01:28 PM
Vanadium 50

9 
4,241 
Hi!
Can anyone help me with information about pure YAG luminescence spectra
(ideal case will be excitation with...

Feb2413 01:19 PM
binomm16

4 
880 
I'm currently an undergrad research assistant in a lab that is experimenting with the interface between ferroelectrics...

Jul710 08:11 AM
yoshisoakland

4 
2,401 
In XRD the incoming beam must be monochromatic and coherent; otherwise the diffracted waves are not in phase at the...

Jul3009 08:39 AM
pyrit

0 
860 
Currently in our lab we have a WEDGE shaped sample that we would like to be able to know the thickness at various...

Jul710 08:07 AM
yoshisoakland

1 
3,657 
In XRD, to examine the diffraction pattern and the determine the elemental structure, a thin layer of sample is...

Oct1709 12:58 PM
Modey3

1 
1,930 
Given the 2theta values from XRD carried out using DebyeScherrer, and given the wavelength of the incident...

Sep3010 08:26 PM
nyxynyx

0 
1,120 
Hi all,
structure factor is 2πi(hx+ky+lz),
(hkl)is plane index, and (xyz) is index within a unit cell of real...

May212 06:44 AM
M Quack

5 
3,255 