Interference of light

By dividing up the wave-front of a beam of light at the Fresnel mirror and the Fresnel biprism, interference is produced. The wavelength is determined from the interference patterns.

  • observe that light plus light can result in darkness
  • understand how to make use of the interference effect
  • a laser as lightsource allows clear observation

Lens holder
Lens, mounted, f +20 mm
Lens, mounted, f +300 mm,achrom.
Laser, He-Ne, 0.2/1.0 mW, 230 V AC
Prism table with holder
Swinging arm
Optical bench expert, l = 1000 mm
Base for optical bench expert, adjustable
Slide mount for optical bench expert, h = 30 mm
Slide mount for optical bench expert, h = 80 mm
Fresnel biprism
Fresnel mirror
Measuring tape, l = 2 m

Determination of the wavelength of light by interference

  1. with Fresnel mirror,
  2. with Fresnel biprism.
  • Wavelength
  • Phase
  • Fresnel biprism
  • Fresnel mirror
  • Virtual light source

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Product number

P2220100

Interference of light

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