In our project, we researched how light reflects and creates rainbows/ spectrums. To test this, we built a cardboard box and insulated it with duct tape. Then we cut holes and put a CD in. Finally we shined the light through the hole so the light was only coming from one place, and looked at the rainbow through the other end. It was an interesting and engaging project, and it taught me all about light and spectrums. Below is a slideshow presentation which leads you through the process of building a spectograph.
JDT