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Feb2313 08:41 AM
ZapperZ

1 
20,773 
Dear All,
I would like to know advantages and disadvantages of various detectors like solid state SiLi detector,...

Sep409 01:38 AM
retaw

0 
1,591 
I have been asked to solve a diffusion equation with a source term using finite differences method. I need to...

Sep309 10:08 AM
pafcu

1 
4,208 
To the moderator: Please shift this to the appropriate forum if this isn't the place for it. EDIT  It seems this...

Sep309 05:43 AM
maverick280857

0 
2,967 
what possible explanation to an unexpected peak that may appear in an XRD pattern of a pure material , what causes,...

Sep109 11:07 AM
bpsbps

4 
1,967 
What is the advantage/disadvantage of Cobalt Xray tube over Copper Xray tube in a XRay diffractometer

Sep109 09:45 AM
nasu

1 
970 
I understand that when two nuclei combine to form another nuclei . the resultant nucleon will have a lower mass than...

Aug3009 11:52 PM
vin300

24 
4,739 
Is spontaneous atomic disintegration possible under current knowledge? I mean hypothetically if we could isolate one...

Aug3009 08:52 PM
Redbelly98

5 
1,962 
Hello,
I'm studying pseudopotentials right now, and I had an epiphany that the pseudowavefunction is really...

Aug2909 07:07 PM
kanato

3 
1,266 
Hi everyone,
I have a 4000 word essay to write for my solid state physics course, and I just thought I'd ask for a...

Aug2909 08:40 AM
adamjford

0 
769 
Hi everyone,
My very first post after simply using physicsforums as a (very) handy FAQ resource.
Okay, so my...

Aug2909 08:24 AM
adamjford

10 
4,747 
Dear all,
We are planning to buy XRay diffractometer. I want the specification of latest Diffractometer. My samples...

Aug2809 06:24 AM
retaw

0 
1,113 
Hi I'm new, to this forum and molecular science
Reading a bit about molecular orbitals, and I have to say the whole...

Aug2809 01:35 AM
PhaseShifter

7 
1,672 
How is the absorption coefficient per unit path length determined for excitation sites in a host crystal with an...

Aug2709 04:11 PM
olgranpappy

3 
1,034 
We all know, Bragg's law , n\lambda=2dsin\theta
where 2dsin\theta=path difference.
In the derivation of the path...

Aug2709 07:01 AM
manofphysics

4 
2,011 
Hi,
The current density due to field emission on a surface is described by the FowlerNordheim equation
J =...

Aug2709 06:56 AM
pafcu

0 
970 
Hello people,
I'm studying now phase transitions. I saw that the order parameter of water gasliquid transition is...

Aug2609 07:05 PM
PhaseShifter

3 
4,577 
In 2D crystal systems,
there are 5 lattice types.
Primitive parallelogram, primitve rectangle, centered...

Aug2509 10:48 PM
scivet

0 
1,077 
In order to grow MWCNTs I need to have certain content of water vapor
dissolved in the argon gas. The amount of water...

Aug2509 12:09 PM
compton1

0 
869 
Hi there!
In thermal field theory, the Matsubara frequencies are defined by \nu_n = \frac{2n\pi}{\beta} for bosons...

Aug2409 02:48 PM
leastaction

2 
1,017 
Hi all:
I am confused about how far spin magnetic moment goes during a finite diffusion time (such as 100 ms). As we...

Aug2309 03:34 PM
xfshi2000

0 
1,733 
I need to determine possible sigma and pi orbitales of C2H4 molecul using theory of group representations and...

Aug2309 12:22 PM
vedo

2 
4,579 
"When a wavefront of Xrays strikes an atom, the electrons in that atom interact with the Xrays and immediately...

Aug2309 12:20 PM
olgranpappy

1 
1,055 
Hi every one
I have a question regarding the kpoints and I was wondering if any one can guide me in the right...

Aug2309 10:37 AM
subasa

4 
2,427 
how does the exchange coupling mechanism work that produce the ferromagnetic properties of materials?

Aug2209 08:12 PM
olgranpappy

5 
6,565 
Hello, there. I'm having a small problem with Miller's indices.
1) Imagine that the plane (2 1 1) is given in the...

Aug2209 02:46 AM
PhaseShifter

7 
5,652 
I know the formulas for the length and velocity forms of the photodetachment cross section for an electron with energy...

Aug2109 05:55 PM
olgranpappy

1 
1,100 
The electronlattice interaction potential is given by
V(r)=\sum_{i} Q_{i}\nabla V_{ei} \left( r R_i\right)
...

Aug2109 05:54 PM
olgranpappy

1 
1,352 
Madelung constant is define like
A=\pm\sum_j\frac{1}{p_{ij}}
So I can always say
A+X=(AX) or A=A
Can...

Aug2109 02:39 AM
olgranpappy

1 
2,706 
Hello,
i ve got some questions on spectroscopy. surface states and quantum well states have freeelectron like...

Aug2109 02:38 AM
olgranpappy

1 
918 
So this is a very novice but sincere question. I've just done a bit of reading about BoseEinstein condensates, and...

Aug1809 10:00 AM
Cthugha

6 
1,059 
I wanted to know in depth in piezoelectric sensors,their EMCF,different materials,groups working on material...

Aug1709 08:30 PM
paramahamsa

4 
1,178 
My research group is considering purchasing a new sputtering system for our lab and I've found two configurations for...

Aug1709 08:18 PM
aanidaani

0 
2,482 
Do yoh have some nice picture to show why the primitive vectors of basic cubic lattice are
...

Aug1709 07:54 PM
aanidaani

2 
2,226 
why the electrons don't collapase into the protoncenter of the atom? is it centrifugal force?
thanks

Aug1709 10:26 AM
Bob S

2 
1,615 
How does disorder (such as structure defect, doping,substitution, etc. )change superconductors' Tc?No matter what kind...

Aug1709 06:58 AM
ZapperZ

1 
1,012 
in the bosehubbard model, we need to enumerate all the possible basis
usually, the basis vectors are taken as the...

Aug1709 04:01 AM
wdlang

2 
2,128 
its being said, " more the loss of energy, more the strength of the covalent bond"
revered members,
could u explain...

Aug1609 11:46 AM
Ygggdrasil

3 
1,243 
I am a mathematician, and I am trying to figure out a physics paper for my research. I am not a physicist but I have...

Aug1509 12:11 PM
deepurple

2 
2,107 
I(\vec{n}\vec{m})=\frac{1}{N}\sum_{\vec{k}}I(\vec{k})e^{i\vec{k}(\vec{n}\vec{m})}
...

Aug1509 10:57 AM
saaskis

4 
1,557 
I've been googling around but i seems not able to find why CuNi have decreasing resistivity when temperature is...

Aug1509 08:49 AM
empirekhoo

2 
1,072 