I just had to share theses pictures because I think there are so cool. I needed to rewrite a lab exercise on laser diffraction and I needed some pictures. Normally, you can't see a laser beam from the side, much less photograph one. In Hollywood, smoke makes the beam visible, but you can't smoke in any of the building on campus. What you see here is me banging to blackboard erasers off camera and blowing the dust into the frame shot. My lab assistant is pushing the button on the digital camera. I think they turned out great.