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
- with Fresnel mirror,
- with Fresnel biprism.
- Wavelength
- Phase
- Fresnel biprism
- Fresnel mirror
- Virtual light source