[pinhole-discussion] Lasers

[Klaas Wynne]

Hi guys:

I made some pinhole photos of the lasers in my lab and put them at
http://dutch.phys.strath.ac.uk/FRC/Picture_diary/picture_diary.html (the
first four photos). In two of the photos you can see diffraction rings and
speckle patterns due to interference of the laser light. I think it's kinda
nice. Happy holidays and all that. Klaas Wynne.