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If you are seeking help with a...

Feb2313 08:38 AM
ZapperZ

1 
35,552 
I was studying Rayleigh Scattering.
The theory says that Rayleigh Scattering is approximated to x<<1 where...

Jun2812 12:38 PM
Jano L.

1 
494 
Now please forgive the question, and thank you in advance for your patience....
I am a little confused by the...

Jun2812 10:07 AM
yuiop

12 
1,397 
So I just finished watching a video of the theatrical scientist, Michio Kaku, about teleportion. According to Kaku,...

Jun2812 03:25 AM
Doc Al

4 
605 
Hello,
is there a representation of the process taking place in Xray photoelectron spectroscopy, describing the...

Jun2812 01:26 AM
tom.stoer

3 
527 
Hello everybody,
I just read the following article:...

Jun2712 09:11 PM
mathal

38 
4,252 
From what I've gathered about quantum mechanics, it's based on probability, correct? (Yes, it's true that I know next...

Jun2712 02:59 PM
mathman

1 
387 
I'm a little frustrated with the quantum m lectures I've been watching. I've watched Susskind's, one in India and now...

Jun2712 02:19 PM
Fredrik

30 
3,072 
This is something that I've seen repeated many times, but I'm wondering how accurate it is. I mean, we've got this...

Jun2712 12:02 PM
HJ Farnsworth

164 
13,172 
I think it's time for the annual quantum interpretation poll.
Vote for which interpretation you currently think...

Jun2712 10:44 AM
harrylin

245 
29,419 
I understand the two cases dealt with when we consider the step potential. The two cases being when E>U (i.e the...

Jun2612 06:44 PM
Ken G

7 
1,019 
we know electron revolves around nucleus at nearly (1/100)th of light speed..does this mean electron as very high...

Jun2612 03:56 PM
Darwin123

2 
1,275 
Greetings everyone,
I'm going through Griffiths QM, and just wanted to make sure I understood the roles (where they...

Jun2612 11:44 AM
HJ Farnsworth

11 
1,190 
I was watching a cartoon with my niece.
Most of the time, cartoons have fairly simple things like 1+1=2 and so on....

Jun2612 09:25 AM
Mako Ruu

9 
1,396 
Fermat's principle is also known as the path of least time principle, and it explains why the angle of incidence is...

Jun2612 12:16 AM
icflame

2 
2,403 
How can you tell if two Lie groups are isomorphic to each other?
If you have a set of generators, Ti, then you can...

Jun2512 10:02 PM
fzero

1 
732 
Please forgive such a simple question, but how does a particle 'remember' what direction to travel in from instant to...

Jun2512 08:35 PM
referframe

9 
1,164 
I have been asking during the last couple of days about EPR, measurement problem and all those sort of things. As a...

Jun2512 04:41 PM
DrChinese

3 
859 
A charged particle  like an electron  has a magnetic moment. This moment changes depending on where the electron...

Jun2512 01:44 PM
Meir Achuz

1 
558 
Question 1: how is the QM prediction (i.e. cosine curve, shown below) derived for Bell's tests? in layman' termss
...

Jun2512 01:30 PM
DrChinese

1 
699 
2 slit, double slit, two slit
I saw a previous topic where someone asked if anyone has tried the 2 slit experiment...

Jun2512 08:45 AM
QuasiParticle

49 
3,120 
Hello!
I've just started reading Sakurai 's 'Mordern Quantum Mechanics' and open this thread for smaller intuitonal...

Jun2512 04:09 AM
Kontilera

0 
541 
Hello! I am new here and I will try my best to clarify my questions and not violate the forum rules.
Just for the...

Jun2412 11:10 PM
joy13975

5 
1,204 
Which of the following require energy?
 change the spin of photon
 entangle photons
 disentangle photons
...

Jun2412 04:05 PM
sigma.alpha

15 
2,293 
You can blame Eddington for this one. I'm a retired electronics guy who now has time to read physics history and...

Jun2412 12:48 PM
PhilDSP

20 
2,000 
Most physicists don't draw a distinction between past, present and future.. this is called the arrow of time....

Jun2412 09:49 AM
rocket123456

0 
519 
I apologize, I know this is not a QM question per se but I think I am more likely to find someone who could answer...

Jun2412 08:59 AM
Stefan_K

4 
7,173 
Hello everyone,
I am trying to solve timedependent LiouvillevonNeumann equations for the dynamics of an electron...

Jun2312 09:20 PM
Einstein Mcfly

4 
960 
Say we have a system consisting of two electrons, traveling freely, that are not initially entangled, either in spin...

Jun2312 06:16 PM
referframe

4 
1,028 
In what we commonly refer to as "nocommunication" theorems of quantum mechanics (QM), we make assumptions which are...

Jun2312 03:08 PM
Duplex

1 
893 
As a self study it has been difficult to find time to study quantum mechanics and relativity simultaneously while...

Jun2212 12:34 PM
sigma.alpha

13 
2,114 
moseley did experiments on various elements and showed that the frequency of the kalpha emission was proportional to...

Jun2212 10:27 AM
Michio Cuckoo

1 
624 
The earliest instance I've seen to this equation, involving the Pauli matrices, is from a 1967 paper by J. M....

Jun2212 08:09 AM
PhilDSP

3 
858 
If it's a dirac delta doesn't it mean it's infinite when x=y? Or is it a sort of kronecker where it's equal to one but...

Jun2112 01:13 AM
tom.stoer

6 
2,178 
"In a Lorentz invariant theory in d dimensions a state forms an irreducible representation under the subgroups of...

Jun2112 12:57 AM
tom.stoer

2 
807 
Hello everyone,
For a project that may involve some work with Anti de Sitter space, I want to understand
1....

Jun2112 12:44 AM
maverick280857

19 
1,943 
http://www.bottomlayer.com/bottom/basic_delayed_choice.htm
This link is from wiki's .
And my question is...

Jun2112 12:14 AM
leftriver

6 
1,316 
Hello. Okay, so there are some theories like string theory that say that there are extra dimensions of space that we...

Jun2012 07:19 PM
ZapperZ

6 
1,384 
Where exactly do the probability distributions we observe come from under the many worlds interpretation? I know it...

Jun2012 02:35 PM
chupe1123

9 
1,452 
How stable/fragile is Quantum Entanglement? with respect to time, space and various events.
Space  We know that...

Jun2012 12:24 PM
ashodhiyavipi

6 
1,402 
Can two massive particles have parallel spacetime trajectories? It seems that the answer is  no. And the closer they...

Jun2012 12:07 PM
zonde

8 
1,434 