CD's and DVD's only have one side, not two. When a CD or DVD is made small holes are etched into the surface on one side. When a dual layer DVD or CD is made the second album or DVD is etched into the spaces between the previously etched holes but at a deeper layer. So the laser is told to read the data at level one depth or level two depth. I used to work for Intel and the technology being used to create chips etc etc is now at the atomic level. It's quite amazing what we can do with data and data processing units these days.
That's not to say we won't see discs that can be turned over in the future??!!??
I see you are having a 'lightbulb' moment MH.
All of which reminds me of the story of a husband and wife watching a Formula One race many years ago.
The wife said ' Why are they swerving around all over the place before the race even starts?'
To which the husband replied, rather impatiently, 'They're warming up the tires woman'
Her reply - 'That's stupid - they should warm the tires up before they go onto the track!'
Her husband built a prototype tyre warmer that very same day in their garage and sold the company on a few years later for a couple of million.............
You might have something there MH!
That's not to say we won't see discs that can be turned over in the future??!!??
I see you are having a 'lightbulb' moment MH.
All of which reminds me of the story of a husband and wife watching a Formula One race many years ago.
The wife said ' Why are they swerving around all over the place before the race even starts?'
To which the husband replied, rather impatiently, 'They're warming up the tires woman'
Her reply - 'That's stupid - they should warm the tires up before they go onto the track!'
Her husband built a prototype tyre warmer that very same day in their garage and sold the company on a few years later for a couple of million.............
You might have something there MH!
'The purpose of life is a life of purpose' - Athena Orchard.