Haleigh Marshall finds the distance between tracks on a CD!!
First find the diffraction distances!!
It takes a steady hand!!!
Chemistry I students calculated the distance between tracks on a CD using a red laser and a CD to find a diffraction pattern on a wall. They then used a mathematical formula to discover there are 1500 nanometers separating the tracks on a CD!! Students also learned that there are a billion nanometers in a meter and that blue lasers can cut through a CD. Lasers have many uses in the medical and military fields as well as in grocery bar code scanners.