On 23/03/2012 22:28, dennis@home wrote:

So you don't know how CDs are made then!

Hint, the data is on the pressed side.
The laser shines through the pressed side.



This turns out not to be the case.

Wikipedia has it right this time. (the diagram may be slightly
misleading - the test is fine)

http://en.wikipedia.org/wiki/Compact...ysical_details

Andy