P. 4842. There are small holes on an opaque sheet, the holes positioned in a regular hexagonal grid as shown in the figure. The sheet is illuminated by monochromatic laser light of wavelength \(\displaystyle \lambda\) perpendicularly to the sheet.
What kind of diffraction pattern can be observed on the screen which is placed at a distance of \(\displaystyle L\) from the sheet, if the distance between the holes is \(\displaystyle d\)? What can be stated about the brightness of the peak intensities with respect to each other? (It can be assumed that \(\displaystyle L\ll d \ll \lambda\).)
Deadline expired on 10 May 2016.