Part 2 - Physical Media
How are they made?
A very high quality CD, in ‘great’ condition. (dust included)
CDs, being digital, contain binary information; either a ‘zero’ or a ‘one’, and this is etched in the production process, by a ‘burner’ as a pit (non modified substrate layer, ‘the valleys’), or a groove (creating a raise in the metal dye, ‘the mountains’).
These 0s and 1s are why we refer to them as ‘digital’. The mediums that came...