Recent content by montser

First, thanks for your replay. Now I understand why there is a phase shift. But what I still do not understand is why this re-radiated wave do not cancel also the incident beam? in other word, what breaks the symmetry between the incident and the forward waves? again thanks

what phase shift?between what?and why there is a phase shift? Thanks for you replay

I've read about wire-grid polarizers from wikipedia. The article says that waves perpendicular to the wires cannot induce electron movement and hence they pass through with minimal energy loss. On the other hand, waves parallel to the wires are reflected by the wires because electron movement is...

I've read about wire-grid polarizers from wikipedia. The article says that waves perpendicular to the wires cannot induce electron movement and hence they pass through with minimal energy loss. On the other hand, waves parallel to the wires are reflected by the wires because electron movement is...

Hi, Is there a such mirror which can reflects a UV laser (~190nm wavelength) with Reflectance greater than 95% and also invisible laser (not necessarily in a high Reflectance)? Thanks

Hi Thanks for your reply, but I can not find in this website a mirror which can reflect 193 nm lase line and also reflect a visible laser. So is there such mirror at all? Montser

Hi is there a broad laser mirror for UV laser in the range which contain the invisible light and a 190nm? and where can I find such mirror? Thanks

Hello everyone, I need to prepare a poster which presents an experimental technique, describes how the technique operates technically and describes one quantity it measures and connect between measured quantity and physical properties of solids. Is there any suggestion for topics which fulfill...

thanx for yor hekp

Hi, Im just wondering, why the fermi level rise up with raisng up the temperature when donors are present in Extrinsic semiconductor? thanx

Reply note: I am not sure about my answer. I think that if you have the Klein Gordon eq then you can find the lagrangian density by bulding lagrangian which the El eq for this lagrangian is exactly the Klein Gordon eq. In the same way you can do for dirac eq

electromagnetic help! I have a general question on finding the suitable green function for a given potential for example: Find the suitable green function for \nabla^2 \varphi= \frac{1}{l^2} \exp (\frac{-|x|}{l})