Bacteria-like projections when shining a laser through a magnifying glass.?
I was recently shining my new green laser pointer through a magnifying glass, and the beam went through the little circle near the bottom of the lens that magnifies things more than the rest of the lens. The laser dot got very much larger, and there were odd little dark circles surrounded by larger, transparent circles. I also noticed the same thing, but with longer, oval-like projections instead of circles. What are these projections of? I'm guessing dirt, hair, bacteria, etc. Can anyone tell me? I want to know because it's a pretty cool effect and it would be cool to know if I'm looking at bacteria or something like that.