PIRA 6C20.30 - Diffraction Around Objects: Pin Hole Diffraction
Photo Shows the Demonstration Apparatus Used by the University
of Texas at Austin
Set Up Instructions / Notes:
- This demostration includes a 15mw red laser, optics rail and a slide wih a .04 mm circular pin hole.
- Important Note: The 40 micron aperture is small. Hence, it is very dim.
- The auditorium must be completely dark. Even the A/V projection system will need to be blanked.
- The Airy disk and rings can be best seen by aiming the laser cart towards the prep room doors.
- The above photo was taken using a 2 second exposure with a DSLR. So, the Airy rings are much brighter than they normally appear.
Last Update 03/08 - University of Texas at Austin Physics Dept.
- All Rights Reserved.
