These Fresnel diffraction patterns of minuscule dust particles can be easily observed by passing green laser through polymer gel balls and projecting the image on a screen,wall or ceiling. The dust specks floating on the surface of the polymer balls got very much enlarged in their image by the lens action of the transparent polymer balls beyond the diffraction limit. As a result one can see beautiful alternating bright and dark rings around the image of dust specks which overlap with each other to produce a mesmerizing effect.
A humble demonstration set up I used at home is shown below:
A few of the diffraction images obtained with the method are show below:
Finally the Magic only a 3D Surface Plot can do...
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| THE CASTLE OF DIFFRACTION WHERE THE GRAND MAGICIAN HAD HIDDEN THE PRINCESS RESOLUTION |
ANOTHER FRESNEL LANDSCAPE
