This item is an interactive tutorial on the topic of interference of light waves. It introduces the user to constructive and destructive interference patterns through models that include soap bubbles and butterfly wings. It also includes a detailed look at Young’s double slit experiment, Newton’s Rings experiment, and hologram interference. The related Java simulation allows users to further explore the double-slit experiment by adjusting the distance between slits. This item is part of a larger collection of materials for students of introductory optics on the topic of light and color. SEE RELATED ITEMS on this page for a link to the full collection.