Diffraction pattern for diffraction on a round aperture,as could be obtained with a purple laser. Note the bright spot,called Arago or Poisson spot,at the centre of the geometric shadow. Historically,observation of Arago spot was used as an evidence for the wave theory of light. Digital composite | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 3406 px × 5017 px |
Model Release : | Non requis |
Property Release : | Non requis |
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