Demos by PIRA

  6D20.10Laser beam through various slit and grating combinations.
  6D20.10Laser beam through sets of 1, 2, or multiple electro-formed slits.
  6D20.15Diffraction patterns of various gratings using He-Ne laser.
  6D20.20Reflection grating with arc lamp.
  6D20.20First and second order transmission gratings, with arc lamp.
  6D20.20Mercury spectrum using slit and grating, includes UV lines.