501 reputation
615
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location United States
age 32
visits member for 3 years, 8 months
seen Feb 20 at 20:38

Jun
25
comment generalizing spin rotations
Thanks @PeterMorgan. Yes, I see now that the type of operator would be important. I am thinking of two spins so the matrix would be another spin operator so $\vec{S} \cdot \vec{I}$ where S and I commute but the eigenvalues would not be +/-1
Jun
24
asked generalizing spin rotations
Jun
10
asked Selection rule used in singlet/triplet recombination in LEDs
May
31
asked QM interpretation of Larmor precession
May
10
awarded  Commentator
May
10
comment Paradox of the Relativistic Record Player
yes, I see this has basically been answered in the link provided by @Lagerbaer. Is the correct protocol to now delete this question?
May
10
asked Paradox of the Relativistic Record Player
May
8
comment Limit of Lorentzian is Dirac Delta
thanks for the answer. So since the expression in question is NOT a form for the Delta function, it will be zero even if t=0. Is that right?
May
8
comment Limit of Lorentzian is Dirac Delta
thanks for the response. If I understand you correctly, you are also saying that the Lorentzian is a poor choice to define the Delta function by? Anyways, my test function is unity so I suppose I am fine considering 'my' definition to be ok for the Delta function.
May
8
asked Limit of Lorentzian is Dirac Delta
May
5
asked Ohm's Law and Space-Charge Limited Current
Mar
2
comment Kinematics textbook illustration
@noname, What textbook is this?
Mar
2
awarded  Editor
Mar
2
revised Fermi level in disordered amorphous and/or organic semiconductors
added 337 characters in body
Mar
1
asked Fermi level in disordered amorphous and/or organic semiconductors
Feb
28
comment Can I calculate the height of a cliff from weight of falling object and time taken?
@Frederik I think my y is your z
Feb
28
answered Can I calculate the height of a cliff from weight of falling object and time taken?
Feb
26
comment Free falling of object with no air resistance
I have always loved this deductive argument for equal velocities. The way I heard it is different but I think stronger. Assume one mass is very large and the other very small. If you tie them together with a massless rope or rod, you would expect the small mass to slow the large mass down if small masses fall slower. Hence, the two masses would fall somewhere in between the two velocities at which they would fall if they were separate. However, by looking at the system as a whole, the system of two masses should fall faster than heavy mass separately since the total mass is larger.
Feb
26
asked Relationship between magnetic resonance linewidth and spin relaxation
Feb
23
answered What is an effective way to search for post-doc positions in physics?