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Feb2313 08:38 AM
ZapperZ

1 
30,461 
what makes a metal sheet to reflect light? why doesn't individual metal atom reflects light?

May1810 09:00 AM
phyzguy

1 
1,302 
Suppose we have particles of kind B, that consist of two fermions of kind F. Now the particles B satisfy the Bose...

May1810 08:35 AM
rajeshpamula

5 
2,347 
Let's have a kind of step potential,
V=infinity, where x\leq0,
V=constant, where 0\leqx\leqa,
V=zero , where...

May1710 11:58 PM
J.Asher

4 
1,058 
I have no idea what it means for a probability to be an amplitude. Can someone give me some kind of intuitive...

May1710 05:21 PM
LostConjugate

5 
3,388 
I've been reading many articles on entangled particles lately and I have come across many pieces of conflicting data....

May1710 04:55 PM
Viral Titan

2 
1,025 
Do physicists say that atoms behave as waves just because they cant look at them directly so they have to use math to...

May1710 09:07 AM
tom.stoer

32 
3,490 
Towards the end of my atomic and quantum course my lecturer makes a note of residual Coulomb interaction and does a...

May1710 08:59 AM
alxm

1 
1,506 
Hello all, I am writing an article on the definition of "observer" in a quantum mechanics context.
From what I know...

May1710 05:14 AM
Demystifier

71 
5,290 
How do we measure a quantum particle's momentum?

May1610 09:10 PM
DaTario

7 
5,201 
In a quantum fluid, we know that it is difficult to add or destroy a vortex because of the conservation of angular...

May1610 03:58 PM
tom.stoer

3 
1,640 
Hi,
I'm reading through CH27 of Srednicki at the moment, and struggling to understand a couple of concepts.
1)...

May1610 09:16 AM
LAHLH

0 
748 
I'm curious if the dualslit experiment has been performed using multiple light sources. For example, if two photon...

May1510 08:37 PM
albert cipriani

2 
4,513 
I'd like to invite you to help me visualize the following (and point out possible flaws in the scenario).
Let's...

May1510 04:48 PM
unusualname

3 
1,012 
if there are three molecules joined by using three springs of length 'l' to form a an equilateral triangle , if all...

May1510 10:44 AM
kmp

0 
1,420 
I would like to know if the electric charge of a particle, like electron, has always a definite value, or on the...

May1510 10:22 AM
chrisphd

10 
2,705 
what is the JOst function and how and why it appears in Scattering problems ?,
for example given the Hamiltonian ...

May1510 09:02 AM
zetafunction

0 
2,411 
Could someone please help me get a very basic intuitive understanding of what rotational and vibrational quantum...

May1510 02:24 AM
ansgar

1 
861 
Do the so called "Bell States" form a basis for any arbitrary two particle state, including nonentangled states?

May1510 12:08 AM
chrisphd

0 
669 
Hey,
the coupling constant in QFT is scale dependent. This scale \mu, it seems to me, is a mathematical tool used...

May1410 03:36 PM
humanino

2 
872 
Hahaha, yeah I did a search on these forums for questions regarding Virtual Particles and it seems its "the horse...

May1410 12:56 PM
humanino

2 
850 
I might make a cloud chamber, which requires for a very small amount of lead 210 on a needle tip, and i have found a...

May1410 09:11 AM
sweet springs

1 
1,619 
I was doing an undergrad experiment on the sodium emission spectrum and I have a few queries. Of course, I was asked...

May1410 05:50 AM
Vanadium 50

31 
17,258 
I want to know how to normalize symmetric and antisymmetric wave functions ???????????

May1410 02:53 AM
ansgar

1 
919 
We have the uncertainty principle. How would our world be different, if someone measured position and momentum of a...

May1310 12:55 PM
SpectraCat

3 
1,371 
Yes, I know the thread name sounds like something you might see on the cover of Discover (or sadly, Scientific...

May1310 09:55 AM
Lord Crc

144 
11,221 
It is sometimes said that wave functions are not real, and simply represent the observer's knowledge of the system. I...

May1310 08:57 AM
DevilsAvocado

78 
6,725 
The wave function of "particle in a box" is Asin(kx).
Since potential energy is zero inside the box, so the...

May1210 06:38 PM
sweet springs

12 
7,178 
I've heard the twoslit experiment described over and over, but there's still something about it that seems unclear to...

May1210 06:36 PM
DevilsAvocado

35 
5,181 
I don't usually consider "waves" to have mass. They're just energy that moves THROUGH mass. Light waves, sound waves,...

May1210 03:45 PM
LostConjugate

32 
2,565 
I need a calculation section of the article without Compton scattering method does not use quantum field theory.
Can...

May1210 12:22 PM
humanino

1 
771 
If I fire photons at a glass, some will be reflected back and some will go through. Which ones is by deifnition...

May1210 12:21 PM
DrChinese

3 
842 
Hi,
I'm a novice at quantum and I was just wondering why an electrically neutral fluorine atom needs to...

May1210 11:22 AM
SpectraCat

8 
2,106 
It puzzles me. In Einstein's paper on the photoelectric effect he proposed that photons with E = nhf were the...

May1210 10:58 AM
LostConjugate

0 
766 
Hi,
I was wondering if anyone could explain how Srednicki gets to his eqn 26.7:
\tilde{dk_1}\tilde{dk_2} \sim...

May1210 03:10 AM
haushofer

5 
819 
This might seem like a foolish query, but I'm having a hard time understanding the rules of degenerate states. I know...

May1210 12:48 AM
diazona

2 
837 
Does the momentum space of a particle in an infinite square well have spikes or is it continuous?
I've heard so...

May1110 09:44 PM
sweet springs

7 
1,930 
Is there agreement here or are all/most of the neutrons in the same state?

May1110 03:01 PM
Frame Dragger

13 
1,457 
Hi,
Source: http://arxiv.org/abs/0808.3316
I haven't studied more than the basics in QM. Therefore I don't...

May1110 02:36 PM
billbray

3 
1,935 
I'm losing my mind trying to differentiate spin, isospin, weak isospin; then there's chirality, helicity  i must be...

May1110 02:29 PM
haael

2 
3,172 
When talking about classical probabilities, like whether the ball is in one of two boxes, with 1/2 probability for the...

May1110 12:13 PM
haael

7 
1,030 