How Do CD Burners Work?

We already know that CD burners copy data onto a CD, but how does this process actually happen? Basically a CD player will use a laser to read the tracks on a CD reading from the inside to the outside. The tracks and spaces in between will look like “hills and valleys” to the laser beam. Instead of having a “hills and valleys” design to them, recordable CDs are completely flat with a dyed surface. When the laser beam runs over them, their translucent dyed surface turns from a shiny color to a dull opaque color forming “hills and valleys” on the recordable CD that resemble the “hills and valleys” on the original CD.