• White light reflected off the surface of a soap film creates a random interference pattern with all the colors of the rainbow.
  • Can be projected onto a screen or whiteboard.
  • Room must be dark.
  • To put a soap film in the loop, lift the soap container up to the loop. Do not move the loop or stand.


        (put 25 cm lens 28 cm from hoop to make a 40 cm image at 2 m
                                27 cm from hoop to make a 70 cm image at 3 m
                                26 cm from hoop to make a 100 cm image at 4 m)
        (put 50 cm lens 53 cm from hoop to make a 125 cm image at 11 m)



  • Typical image seen on screen.

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