Service
Principle
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.
Benefits
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Observe that light plus light can result in darkness
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Understand how to make use of the interference effect
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A laser as lightsource allows clear observation
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Digital data aquisition
Tasks
Determination of the wavelength of light by interference
- with Fresnel mirror,
- with Fresnel biprism.
Learning objectives
- Wavelength
- Phase
- Fresnel biprism
- Fresnel mirror
- Virtual light source
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Digital learning
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