Recent content by Roula

Hello Everyone :) I would like to ask about the age of the normal PhD student. Is it too late to begin the PhD at 30 ? I would like to apply for a position in nanoscience. Is it difficult to get such position with the age of 30 ? What is the more important, the age or the grades of...

Thanks for all for your answer :)

Hello everyone :) I am going to finish my master thesis in physics ( Nano-science ) in Germany at rostock university within the next two months, and i would like to apply for PhD in other city. I am not a German. I would like to ask, whether it is very difficult to get a PhD position in...

No answer :(

Dear Dr. Transport. i am thankful for your response. You are right that the wavelength must be smaller than the dimension to get scattered. And that was my question. Could you please prove it for me ? does the proof relate to Huygens–Fresnel principle ? thanks again. Roula

Hello everyone I would like to ask you something related to the investigation of materials depending on Bragg Diffraction (Bragg Law). It is a prerequisite, that the wavelength of the used radiation must be smaller than the dimension of the sample, by the meaning λ ≤ d , where λ is the...