That signature block belongs to Gess Shankar, the CDPUB list administrator.
Here's the pertinent section:
<<
What is a CDRom? |<><>| 3 billion pits arranged in a 3 mile spiral! |<><>|
>>
I think it would be a good idea to ask his permission before using it. The
figures are pretty accurate, I belive. The pits are one micron wide, but I'll
leave the math to you <g>.
Kathy Cochrane