Laser diffraction set A

Set of 9 objects consisting of:
6 slides with 1 to 6 slits (slits 0.06 mm wide and 0.2 mm apart)
3 slides with line gratings: 40 lines/cm (line width 0.2 mm),
40 lines/cm (line width 0.1 mm),
80 lines/cm line width 0.03 mm