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

Feb2313 08:38 AM
ZapperZ

1 
36,463 
i do not believe that there is an answer, though i wish to be sure weather or not there are any semivalid atleast...

Jul505 07:53 PM
professor

10 
1,389 
there are many small womholes that are continuously created throught time, they may not remain open for long enough...

Jul705 10:30 AM
Zygotic Embryo

3 
801 
i eventually wish to learn all that i possibly can, though atm i have only recently bothered with qm much at all. I...

Dec105 07:48 PM
fdarkangel

6 
1,308 
I don't know much about brackets and Hamiltonians, but there is a much simpler aspect of the time / energy uncertainty...

Jun1212 01:46 PM
professorscot

0 
761 
Greetings,
I'm an undergrad physics student currently taking a course in QM.
There is, however, something that's...

Sep1407 05:28 PM
monish

19 
3,439 
I'm trying to wrap my brain around the notion of tunneling and am hoping somebody could be of assistance.
I'm...

Oct2708 12:23 PM
jtbell

8 
1,761 
I am reading both Griffiths and Gasiorowicz and I can't get either of them to tell me why the continuity of the...

Oct2009 09:43 PM
Avodyne

5 
2,208 
I've got three questions basically.
Do photons actually have only an integer spin +/ 1, or do people really only...

May210 06:44 PM
haael

5 
2,288 
Hello.
On the "Ask an Astrophysicist" page on the NASA site, one can read the following:
This raises three...

Feb512 02:08 PM
tom.stoer

18 
1,859 
Hi,
Can we know the Copenhagen interpretation, a result of uncertainty principle?
If you don't agree with that,...

Jun2507 07:16 PM
ZapperZ

5 
2,199 
when I studied the Journal of Low Temperature Physics (number of 28 April), confronted an important case: the...

Jul2707 12:15 AM
DaTario

5 
1,737 
I got a ebook on QFT few months ago.but this one hasn't chapter 1 and title and index etc.i.e all the informations...

Sep2510 10:31 AM
prophetlmn

5 
1,893 
Question 1:
The mean speed for escaping molecules from a hole is 1.88*(k*T)/m)^1/2 (Eq.1)
The mean speed for...

Nov1309 01:31 PM
prose100

0 
4,697 
Question 1:
The mean speed for escaping molecules from a hole is 1.88*(k*T)/m)^1/2 (Eq.1)
The mean speed for...

Nov1609 11:25 PM
prose100

0 
1,366 
To Anyone,
Note: This is not homework. These are questions that I have come up with during independent study at my...

Nov1909 12:24 PM
prose100

0 
1,159 
Hello,
Quick question:
Will radioactive particles give interference pattern if there is no measuring device?

May1711 12:25 AM
San K

12 
1,870 
What is quantum field theory and why was it developed? What is its relation to quantum mechanics?

Mar2604 04:28 PM
lethe

60 
4,516 
Hey guys,
I study biophysics, so maybe this is a sophomoric question. I've done a cursory, albeit fruitless search...

Feb1314 03:00 PM
Jilang

20 
985 
Hi everyone! I will very thankful to whom can suggest me some texts or webpages where I can find a demonstrated...

Jan411 04:56 AM
Cthugha

13 
2,015 
Hi to everyone! I'm reading an example of atom radiation interaction (more precisely, an atom emits a photon which...

Feb411 11:23 AM
provolus

1 
1,049 
Hi everybody! I'm studying this paper "Unambiguous discrimination among quantum operations"...

Feb2712 03:47 PM
provolus

0 
948 
HI
I don't understand why cadium or other elements have different zeeman effect because of their electron...

Dec1211 04:42 AM
cragar

1 
1,253 
I'd like to know a few things:
Are there different explanations of this experiment, and if so – which are the most...

Jan2213 01:56 AM
Observatoren

9 
1,264 
I have seen the mathematical proof of how can a particle tunnel through a barrier of higher potential energy but I was...

Feb1907 04:21 AM
ZapperZ

10 
1,854 
what is exactly meant by wave nature,does the particle move like a wave or it moves along path of a wave or something...

Jul3010 08:44 AM
adaptation

10 
1,011 
position,velocity cannot be found simultaneously with appreciable accuracy,why is it so?

Jul3110 08:00 AM
adaptation

6 
1,306 
I have a simple question on double slit experiment,
In double slit experiment, after the light rays pass through the...

Aug1907 09:53 AM
lightarrow

25 
4,616 
I'm teaching basic chemistry and got a question that I found very interesting. All text books we use depict hydrogenic...

Jul1709 11:15 AM
psand

0 
596 
I have not started studying quantum mechanics in depth (so I don't know too much of the math behind it). But I read...

Jun412 11:29 AM
A. Neumaier

17 
3,513 
okay, here goes. Electron A moves through a vacuum. There are quantum fluctuations ocurring all the time, some...

May913 10:25 AM
Naty1

15 
1,203 
correct me if im wrong but there are fundamental fields that are responsible for the forces and properties. A) how do...

May713 07:44 PM
Naty1

3 
553 
I was just doing some last minute review for my physics final tomorrow, and I have a few question about the Bohr model...

Nov806 10:50 AM
ZapperZ

4 
4,588 
I'm reading from an introductory text on quantum physics, and came across this sentence:
It's the second...

Mar1311 05:58 AM
lightarrow

19 
3,565 
I am currently reading section.36 of Srednicki's QFT,
In the context he said that the term
\partial^\mu \psi...

Dec1909 08:26 AM
PsiString

0 
885 
A particle is subject to V(r)= V0 if r>r0 and 0 if r<r0. What's the value of V0 if there are exactly 2 bound states?

Mar210 12:36 PM
psistarpsi

0 
781 
So, I'll be taking pchem 1 this semester and it has been 2.5 years since I have done any calculus and it's foggy at...

Aug1613 03:46 PM
PStudent111

0 
459 
I was wondering how exactly a single photon is polarized. In the case of an electromagnetic wave in theoretical free...

Jun2209 12:56 PM
Bob S

3 
1,180 
My textbook had a section where a particle beam was going over a barrier where E > U and then right after that had a...

Jan714 03:54 PM
jtbell

2 
367 
My textbook says the ground state energy of the QSHO is given by 1/2*h_bar*w and that this is the minimum energy...

Apr514 01:37 PM
WannabeNewton

1 
225 
So my professor said that the Kinetic energy of the particle in a 3D infinite well is dependent on position where in a...

Apr1714 12:18 PM
Bill_K

2 
345 