Demos by PIRA

  6D30.10Newton's rings by transmission or reflection on arc bench.
  6D30.10Same as E+25+30, using Hall's prism.
  6D30.20Soap film interference: The soap bubble experiment on arc bench.
  6D30.30Thin film interference with optical flats and sodium lamp.
  6D30.40Thin film interference with mercury light on mica sheets.
  6D30.65Oil film interference on water.