CD & DVD under microscope
I knew that there are tracks, but never was able to see them. My old pocket microscope was too weak.Update: Photos remade with new camera. Also figured out how to make a good photo of DVD - I needed to brutally crack disk at half of it's thickness to directly access surface with written data.
Track interval is 1.6µm for CD and 0.74µm for DVD.
CD
![](/files/cd.jpg)
DVD
![](/files/dvd.jpg)
Immersion lens:
![](/files/dvd-imm.jpg)