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
Determination of the wavelength of light by interference
- with Fresnel mirror,
- with Fresnel biprism.
What you can learn about
- Fresnel biprism
- Fresnel mirror
- Virtual light source