Bilder: Fresnel and Fraunhofer diffraction am Spalt
Fresnel diffraction am Spalt: L=20, F=10
![Fresnel diffraction am Spalt: L=20, F=10](https://www.geogebra.org/resource/U3GBfAXQ/ihmdK3kY2V1UqY67/material-U3GBfAXQ.png)
Fresnel diffraction am Spalt: L=50, F=4
![Fresnel diffraction am Spalt: L=50, F=4](https://www.geogebra.org/resource/CUzKeQZZ/OQku34oWeNhIabde/material-CUzKeQZZ.png)
Fresnel diffraction am Spalt: L=800, F=0.25 ~der “Poisson Fleck” Effekt
![Fresnel diffraction am Spalt: L=800, F=0.25 ~der “Poisson Fleck” Effekt](https://www.geogebra.org/resource/n9yYUKzR/RRbWLDAFVkMPP7hI/material-n9yYUKzR.png)
Fraunhofer diffraction am Spalt: L=5000, F=0.04
![Fraunhofer diffraction am Spalt: L=5000, F=0.04](https://www.geogebra.org/resource/ABQ72CSj/DlBhPEkPCvWThiiV/material-ABQ72CSj.png)