The objective of this lab is to campare the diffraction behavior of light waves between a CD and DVD. CDs and DVDs contain regularly spaced micrometer sized features which can act like a diffraction grating. Using commercial electronic storage devices like CDs and DVDs as gratings rather than commercially produced plan transmission gratings enhances student interest in the activity and also opens up a discussion on the trend of improving storage capacity with the invention of Blu-ray and layered DVDs. By conducting this experiment the students should be able to calculate the spacing between tracks of a CD and DVD. This lab also incorporates nanotechnology by including AFM (Atomic Force Microscope) images of a CD and DVD for the students to compare with their macro-scale data.
- Scientists and engineers have formed the interdisciplinary field of nanotechnology by investigating properties and manipulating matter at the nanoscale.
This linked product was created by another institution (not by the NISE Network). Contact owning institution regarding rights and permissions.
NISE Network products are developed through an iterative collaborative process that includes scientific review, peer review, and visitor evaluation in accordance with an inclusive audiences approach. Products are designed to be easily edited and adapted for different audiences under a Creative Commons Attribution Non-Commercial Share Alike license. To learn more, visit our Development Process page.