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     In Young´s experiment a light beam passes through a double slit and produces an interference pattern. It will depend on  the light  wavelenght , the separation between the slits and the distance to the screen. This program simulates Young´s experiment.
Instructions:
• Start : turns the light source on, and Stop turns  it off.
• Vertical Scrollbar: changes light wavelength
• Left Horizontal Scrollbar:  to choose the distance  source-screen.
• Right Horizontal Scrollbar: to change the separation between the slits.