
#1
Mar612, 05:30 AM

P: 25

Derive the relation Δn.Δσ ≥ 1/2
where n is number of photons in an EM field and σ is phase Using heisenburgs uncetertainty principle? Tried subbing in frequency into heisenburgs uncertainty principle to get to the number of photons and to get rid of mometum is this the right line? Dont know about getting the phase term? 



#2
Mar612, 11:38 AM

P: 36

[tex] \Delta E = hf \Delta n [/tex]
and something to do with [tex] E=E0 \exp( i(\omega t  kx +\psi )) [/tex] where [tex]\psi = phase [/tex] 


Register to reply 
Related Discussions  
Photons & their relation to charge  Classical Physics  29  
uncertainty relation: minimum value  Advanced Physics Homework  3  
Confused again by uncertainty relation  Quantum Physics  18  
Uncertainty relation  Advanced Physics Homework  0  
Uncertainty relation and absolute zero.  High Energy, Nuclear, Particle Physics  7 