- #1
sakkoyun
- 10
- 0
Dear physicist,
I designed an experiment for my undergraduate students. As we know, for spin operators, the commutation relation is
[Si,Sj]=ihSk
We also know, if we use two polarizers which are perpendicular each other, there is no light other side after polarizers. Namely apparatus is like,
-------------------------------------------------------------------------------------
Light source ------> 0 degree polarizer + 90 degree polarizer ------->Luxmeter (no light)
-------------------------------------------------------------------------------------
If we commute these two as,
-------------------------------------------------------------------------------------
Light source ------> 90 degree polarizer + 0 degree polarizer ------->Luxmeter (no light)
-------------------------------------------------------------------------------------
So we can say, 0 and 90 degree polarizers can commute. 0 degree polarizer may be named Sx operator and 90 degree polarizer may be named Sy operator.
According to the result of this experiment,
[Sx,Sy]=0.
Whereas [Sx,Sy]=ihSz is the rule.
Where is the problem in my mind?
Best wishes.
Serkan
I designed an experiment for my undergraduate students. As we know, for spin operators, the commutation relation is
[Si,Sj]=ihSk
We also know, if we use two polarizers which are perpendicular each other, there is no light other side after polarizers. Namely apparatus is like,
-------------------------------------------------------------------------------------
Light source ------> 0 degree polarizer + 90 degree polarizer ------->Luxmeter (no light)
-------------------------------------------------------------------------------------
If we commute these two as,
-------------------------------------------------------------------------------------
Light source ------> 90 degree polarizer + 0 degree polarizer ------->Luxmeter (no light)
-------------------------------------------------------------------------------------
So we can say, 0 and 90 degree polarizers can commute. 0 degree polarizer may be named Sx operator and 90 degree polarizer may be named Sy operator.
According to the result of this experiment,
[Sx,Sy]=0.
Whereas [Sx,Sy]=ihSz is the rule.
Where is the problem in my mind?
Best wishes.
Serkan